./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ............................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-11-15 23:44:18,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:44:18,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:44:18,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:44:18,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:44:18,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:44:18,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:44:18,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:44:18,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:44:18,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:44:18,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:44:18,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:44:18,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:44:18,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:44:18,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:44:18,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:44:18,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:44:18,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:44:18,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:44:18,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:44:18,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:44:18,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:44:18,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:44:18,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:44:18,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:44:18,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:44:18,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:44:18,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:44:18,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:44:18,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:44:18,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:44:18,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:44:18,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:44:18,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:44:18,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:44:18,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:44:18,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:44:18,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:44:18,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:44:18,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:44:18,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:44:18,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:44:18,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:44:18,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:44:18,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:44:18,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:44:18,946 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:44:18,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:44:18,947 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:44:18,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:44:18,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:44:18,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:44:18,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:44:18,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:44:18,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:44:18,949 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:44:18,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:44:18,950 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:44:18,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:44:18,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:44:18,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:44:18,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:44:18,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:44:18,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:44:18,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:44:18,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:44:18,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:44:18,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:44:18,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:44:18,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:44:18,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2019-11-15 23:44:18,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:44:18,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:44:19,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:44:19,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:44:19,002 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:44:19,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-15 23:44:19,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/c570f5262/307181c09c424e2890be2d12bc4bbdc2/FLAG728147e19 [2019-11-15 23:44:19,469 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:44:19,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-15 23:44:19,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/c570f5262/307181c09c424e2890be2d12bc4bbdc2/FLAG728147e19 [2019-11-15 23:44:19,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/c570f5262/307181c09c424e2890be2d12bc4bbdc2 [2019-11-15 23:44:19,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:44:19,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:44:19,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:19,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:44:19,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:44:19,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:19" (1/1) ... [2019-11-15 23:44:19,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d75e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:19, skipping insertion in model container [2019-11-15 23:44:19,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:19" (1/1) ... [2019-11-15 23:44:19,907 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:44:19,924 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:44:20,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:20,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:44:20,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:20,325 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:44:20,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20 WrapperNode [2019-11-15 23:44:20,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:20,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:20,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:44:20,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:44:20,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:20,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:44:20,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:44:20,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:44:20,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... [2019-11-15 23:44:20,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:44:20,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:44:20,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:44:20,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:44:20,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 23:44:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:44:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:44:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:44:20,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:44:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:44:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:44:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:44:20,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:44:20,917 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 23:44:20,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:20 BoogieIcfgContainer [2019-11-15 23:44:20,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:44:20,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:44:20,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:44:20,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:44:20,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:44:19" (1/3) ... [2019-11-15 23:44:20,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3ed58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:20, skipping insertion in model container [2019-11-15 23:44:20,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:20" (2/3) ... [2019-11-15 23:44:20,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3ed58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:20, skipping insertion in model container [2019-11-15 23:44:20,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:20" (3/3) ... [2019-11-15 23:44:20,927 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-15 23:44:20,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:44:20,950 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:44:20,961 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:44:20,985 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:44:20,986 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:44:20,986 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:44:20,986 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:44:20,986 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:44:20,986 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:44:20,986 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:44:20,986 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:44:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 23:44:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 23:44:21,008 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:21,009 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:21,010 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:21,016 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-15 23:44:21,024 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:21,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331951632] [2019-11-15 23:44:21,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:21,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331951632] [2019-11-15 23:44:21,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:21,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:44:21,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540922953] [2019-11-15 23:44:21,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:44:21,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:21,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:44:21,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:21,174 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-15 23:44:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:21,198 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-15 23:44:21,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:44:21,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-15 23:44:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:21,209 INFO L225 Difference]: With dead ends: 66 [2019-11-15 23:44:21,209 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 23:44:21,212 INFO L600 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 [2019-11-15 23:44:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 23:44:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 23:44:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:44:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-15 23:44:21,244 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-15 23:44:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:21,245 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-15 23:44:21,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:44:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-15 23:44:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:44:21,246 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:21,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:21,246 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-15 23:44:21,247 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:21,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744976052] [2019-11-15 23:44:21,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:21,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744976052] [2019-11-15 23:44:21,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:21,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:44:21,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318008454] [2019-11-15 23:44:21,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:44:21,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:44:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:44:21,359 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-11-15 23:44:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:21,395 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-15 23:44:21,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:44:21,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-15 23:44:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:21,396 INFO L225 Difference]: With dead ends: 34 [2019-11-15 23:44:21,396 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 23:44:21,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:44:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 23:44:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 23:44:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:44:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-11-15 23:44:21,403 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2019-11-15 23:44:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:21,404 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-11-15 23:44:21,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:44:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-11-15 23:44:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:44:21,405 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:21,405 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:21,405 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:21,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2019-11-15 23:44:21,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:21,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932866005] [2019-11-15 23:44:21,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:21,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:21,528 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:44:21,532 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:44:21,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:44:21 BoogieIcfgContainer [2019-11-15 23:44:21,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:44:21,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:44:21,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:44:21,575 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:44:21,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:20" (3/4) ... [2019-11-15 23:44:21,578 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:44:21,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:44:21,581 INFO L168 Benchmark]: Toolchain (without parser) took 1689.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,581 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:21,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,583 INFO L168 Benchmark]: Boogie Preprocessor took 37.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:21,587 INFO L168 Benchmark]: RCFGBuilder took 507.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,588 INFO L168 Benchmark]: TraceAbstraction took 654.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,589 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:21,593 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 434.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 507.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 654.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [one_modf=1] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L22] COND TRUE j0 < 23 VAL [one_modf=1] [L23] COND TRUE j0 < 0 VAL [one_modf=1] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [one_modf=1] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L73] return x != x; VAL [one_modf=1] [L85] isnan_float(iptr) && !isnan_float(res) [L73] return x != x; VAL [one_modf=1] [L85] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-11-15 23:44:24,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:44:24,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:44:24,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-15 23:44:24,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:44:24,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:44:24,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:44:24,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:44:24,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:44:24,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:44:24,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:44:24,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:44:24,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:44:24,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:44:24,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:44:24,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:44:24,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-15 23:44:24,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:44:24,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:44:24,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:44:24,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:44:24,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:44:24,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:44:24,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:44:24,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:44:24,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:44:24,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:44:24,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:44:24,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:44:24,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:44:24,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:44:24,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:44:24,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:44:24,203 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:44:24,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:44:24,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:44:24,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:44:24,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:44:24,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:44:24,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:44:24,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:44:24,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:44:24,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:44:24,206 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:44:24,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:44:24,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:44:24,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:44:24,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:44:24,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:44:24,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:44:24,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:44:24,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:44:24,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:44:24,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:44:24,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:44:24,209 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:44:24,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:44:24,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:44:24,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:44:24,211 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2019-11-15 23:44:24,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:44:24,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:44:24,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:44:24,263 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:44:24,263 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:44:24,264 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-15 23:44:24,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/9f9bec36b/c1e830e311194ab4acb7f60950514c0a/FLAG66c458eec [2019-11-15 23:44:24,814 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:44:24,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-15 23:44:24,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/9f9bec36b/c1e830e311194ab4acb7f60950514c0a/FLAG66c458eec [2019-11-15 23:44:25,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/data/9f9bec36b/c1e830e311194ab4acb7f60950514c0a [2019-11-15 23:44:25,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:44:25,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:44:25,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:25,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:44:25,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:44:25,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6206efa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25, skipping insertion in model container [2019-11-15 23:44:25,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,161 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:44:25,181 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:44:25,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:25,415 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:44:25,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:25,466 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:44:25,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25 WrapperNode [2019-11-15 23:44:25,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:25,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:25,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:44:25,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:44:25,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:25,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:44:25,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:44:25,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:44:25,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... [2019-11-15 23:44:25,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:44:25,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:44:25,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:44:25,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:44:25,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:44:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:44:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:44:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 23:44:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:44:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-15 23:44:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:44:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:44:26,274 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:44:26,274 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 23:44:26,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:26 BoogieIcfgContainer [2019-11-15 23:44:26,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:44:26,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:44:26,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:44:26,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:44:26,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:44:25" (1/3) ... [2019-11-15 23:44:26,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65c3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:26, skipping insertion in model container [2019-11-15 23:44:26,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:25" (2/3) ... [2019-11-15 23:44:26,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65c3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:26, skipping insertion in model container [2019-11-15 23:44:26,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:26" (3/3) ... [2019-11-15 23:44:26,284 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-15 23:44:26,294 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:44:26,303 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:44:26,313 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:44:26,332 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:44:26,332 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:44:26,332 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:44:26,333 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:44:26,333 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:44:26,333 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:44:26,333 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:44:26,333 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:44:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 23:44:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 23:44:26,356 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:26,357 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:26,359 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-15 23:44:26,376 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:26,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682323741] [2019-11-15 23:44:26,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:26,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:44:26,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:44:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:26,572 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:44:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:26,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682323741] [2019-11-15 23:44:26,582 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:26,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:44:26,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759376360] [2019-11-15 23:44:26,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:44:26,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:44:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:44:26,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:26,608 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-15 23:44:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:26,638 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-15 23:44:26,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:44:26,640 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-15 23:44:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:26,653 INFO L225 Difference]: With dead ends: 66 [2019-11-15 23:44:26,653 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 23:44:26,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 23:44:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 23:44:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:44:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-15 23:44:26,695 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-15 23:44:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:26,695 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-15 23:44:26,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:44:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-15 23:44:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:44:26,697 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:26,697 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:26,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:44:26,898 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:26,899 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-15 23:44:26,899 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:26,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911801408] [2019-11-15 23:44:26,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:27,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:44:27,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:44:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:27,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:44:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:27,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911801408] [2019-11-15 23:44:27,297 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:27,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-15 23:44:27,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887318361] [2019-11-15 23:44:27,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:44:27,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:44:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:44:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:44:27,302 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2019-11-15 23:44:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:27,538 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-15 23:44:27,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:44:27,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-15 23:44:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:27,543 INFO L225 Difference]: With dead ends: 38 [2019-11-15 23:44:27,543 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 23:44:27,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:44:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 23:44:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 23:44:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:44:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-15 23:44:27,549 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-11-15 23:44:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:27,553 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-15 23:44:27,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:44:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-15 23:44:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:44:27,556 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:27,560 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:27,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:44:27,778 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:27,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:27,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2019-11-15 23:44:27,779 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:27,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830918531] [2019-11-15 23:44:27,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:27,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:44:27,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:44:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:27,942 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:44:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:27,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830918531] [2019-11-15 23:44:27,945 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:27,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:44:27,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966289624] [2019-11-15 23:44:27,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:44:27,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:44:27,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:44:27,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:44:27,946 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-11-15 23:44:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:27,972 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-15 23:44:27,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:44:27,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-15 23:44:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:27,974 INFO L225 Difference]: With dead ends: 21 [2019-11-15 23:44:27,974 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 23:44:27,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:44:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 23:44:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 23:44:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:44:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-11-15 23:44:27,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2019-11-15 23:44:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:27,980 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-11-15 23:44:27,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:44:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-11-15 23:44:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:44:27,981 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:27,981 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:28,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:44:28,182 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2019-11-15 23:44:28,183 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:28,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322306811] [2019-11-15 23:44:28,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/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 [2019-11-15 23:44:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:28,716 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:44:28,723 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:44:28,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:44:28,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:44:28 BoogieIcfgContainer [2019-11-15 23:44:29,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:44:29,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:44:29,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:44:29,014 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:44:29,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:26" (3/4) ... [2019-11-15 23:44:29,017 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:44:29,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_71dcb4d9-8851-4313-b281-d6a38f49c9d6/bin/uautomizer/witness.graphml [2019-11-15 23:44:29,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:44:29,116 INFO L168 Benchmark]: Toolchain (without parser) took 3972.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.6 MB in the beginning and 1.0 GB in the end (delta: -68.8 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:29,117 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:29,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.07 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 929.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:29,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 929.5 MB in the beginning and 1.1 GB in the end (delta: -214.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:29,124 INFO L168 Benchmark]: Boogie Preprocessor took 42.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:29,124 INFO L168 Benchmark]: RCFGBuilder took 642.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:29,125 INFO L168 Benchmark]: TraceAbstraction took 2736.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.4 MB). Peak memory consumption was 97.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:29,125 INFO L168 Benchmark]: Witness Printer took 100.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:29,127 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.07 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 929.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 122.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 929.5 MB in the beginning and 1.1 GB in the end (delta: -214.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 642.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2736.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.4 MB). Peak memory consumption was 97.4 MB. Max. memory is 11.5 GB. * Witness Printer took 100.11 ms. Allocated memory is still 1.2 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: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [one_modf=1.0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] *iptr = x * one_modf VAL [one_modf=1.0] [L59] ieee_float_shape_type gf_u; [L60] gf_u.value = (x) [L61] EXPR gf_u.word [L61] (ix) = gf_u.word [L64] ieee_float_shape_type sf_u; [L65] sf_u.word = (ix & 0x80000000) [L66] EXPR sf_u.value [L66] (x) = sf_u.value [L68] return x; VAL [one_modf=1.0] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L73] return x != x; VAL [one_modf=1.0] [L85] isnan_float(iptr) && !isnan_float(res) [L73] return x != x; VAL [one_modf=1.0] [L85] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 2 QuantifiedInterpolants, 2434 SizeOfPredicates, 6 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...