./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 ee5ae4bbae935ee4fc29ea9e50ac81dc390a543f .......................................................................................................................................................................................................................................................................................................................... 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_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 ee5ae4bbae935ee4fc29ea9e50ac81dc390a543f ................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 11:58:44,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:58:44,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:58:44,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:58:44,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:58:44,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:58:44,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:58:44,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:58:44,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:58:44,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:58:44,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:58:44,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:58:44,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:58:44,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:58:44,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:58:44,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:58:44,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:58:44,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:58:44,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:58:44,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:58:44,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:58:44,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:58:44,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:58:44,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:58:44,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:58:44,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:58:44,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:58:44,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:58:44,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:58:44,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:58:44,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:58:44,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:58:44,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:58:44,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:58:44,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:58:44,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:58:44,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:58:44,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:58:44,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:58:44,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:58:44,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:58:44,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 11:58:44,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:58:44,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:58:44,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:58:44,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:58:44,951 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:58:44,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:58:44,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:58:44,953 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:58:44,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:58:44,953 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:58:44,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:58:44,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:58:44,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:58:44,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:58:44,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:58:44,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:58:44,955 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_4f87f435-729e-4748-bb7b-36f3a429ec56/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 -> ee5ae4bbae935ee4fc29ea9e50ac81dc390a543f [2019-12-07 11:58:45,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:58:45,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:58:45,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:58:45,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:58:45,076 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:58:45,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2019-12-07 11:58:45,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/a45c953cd/a80e4c1b345744639f2cd4d89361829f/FLAG9373b6844 [2019-12-07 11:58:45,449 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:58:45,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2019-12-07 11:58:45,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/a45c953cd/a80e4c1b345744639f2cd4d89361829f/FLAG9373b6844 [2019-12-07 11:58:45,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/a45c953cd/a80e4c1b345744639f2cd4d89361829f [2019-12-07 11:58:45,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:58:45,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:58:45,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:45,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:58:45,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:58:45,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39474158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45, skipping insertion in model container [2019-12-07 11:58:45,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:58:45,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:58:45,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:45,627 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:58:45,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:45,658 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:58:45,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45 WrapperNode [2019-12-07 11:58:45,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:45,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:45,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:58:45,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:58:45,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:45,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:58:45,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:58:45,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:58:45,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... [2019-12-07 11:58:45,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:58:45,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:58:45,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:58:45,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:58:45,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 [2019-12-07 11:58:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:58:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 11:58:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:58:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:58:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:58:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:58:45,897 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:58:45,898 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 11:58:45,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:45 BoogieIcfgContainer [2019-12-07 11:58:45,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:58:45,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:58:45,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:58:45,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:58:45,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:58:45" (1/3) ... [2019-12-07 11:58:45,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3169988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:45, skipping insertion in model container [2019-12-07 11:58:45,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:45" (2/3) ... [2019-12-07 11:58:45,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3169988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:45, skipping insertion in model container [2019-12-07 11:58:45,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:45" (3/3) ... [2019-12-07 11:58:45,903 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2019-12-07 11:58:45,909 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:58:45,913 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:58:45,921 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:58:45,935 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:58:45,935 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:58:45,935 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:58:45,935 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:58:45,935 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:58:45,935 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:58:45,935 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:58:45,936 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:58:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 11:58:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:58:45,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:45,949 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:45,949 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:45,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2019-12-07 11:58:45,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:58:45,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414118031] [2019-12-07 11:58:45,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:46,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414118031] [2019-12-07 11:58:46,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:46,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:58:46,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040168111] [2019-12-07 11:58:46,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:58:46,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:58:46,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:58:46,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:58:46,047 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-12-07 11:58:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:46,058 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2019-12-07 11:58:46,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:58:46,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-12-07 11:58:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:46,064 INFO L225 Difference]: With dead ends: 38 [2019-12-07 11:58:46,065 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 11:58:46,067 INFO L630 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 [2019-12-07 11:58:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 11:58:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 11:58:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 11:58:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 11:58:46,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2019-12-07 11:58:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:46,092 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 11:58:46,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:58:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 11:58:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 11:58:46,093 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:46,093 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:46,093 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2019-12-07 11:58:46,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:58:46,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244492999] [2019-12-07 11:58:46,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:46,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244492999] [2019-12-07 11:58:46,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:46,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:58:46,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629542924] [2019-12-07 11:58:46,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:46,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:58:46,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:46,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:46,164 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2019-12-07 11:58:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:46,178 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-12-07 11:58:46,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:46,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-12-07 11:58:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:46,179 INFO L225 Difference]: With dead ends: 24 [2019-12-07 11:58:46,180 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 11:58:46,180 INFO L630 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 [2019-12-07 11:58:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 11:58:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 11:58:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 11:58:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-07 11:58:46,184 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2019-12-07 11:58:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:46,184 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-07 11:58:46,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-07 11:58:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 11:58:46,185 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:46,185 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:46,185 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2019-12-07 11:58:46,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:58:46,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105200527] [2019-12-07 11:58:46,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:58:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:58:46,313 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:58:46,314 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:58:46,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:58:46 BoogieIcfgContainer [2019-12-07 11:58:46,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:58:46,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:58:46,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:58:46,334 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:58:46,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:45" (3/4) ... [2019-12-07 11:58:46,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:58:46,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:58:46,338 INFO L168 Benchmark]: Toolchain (without parser) took 872.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.6 MB in the beginning and 1.0 GB in the end (delta: -98.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:46,339 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:58:46,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:46,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.08 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. [2019-12-07 11:58:46,340 INFO L168 Benchmark]: Boogie Preprocessor took 19.04 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:46,340 INFO L168 Benchmark]: RCFGBuilder took 192.47 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:46,341 INFO L168 Benchmark]: TraceAbstraction took 434.27 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:46,341 INFO L168 Benchmark]: Witness Printer took 3.26 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. [2019-12-07 11:58:46,343 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.08 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. * Boogie Preprocessor took 19.04 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 192.47 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 434.27 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.26 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 25, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 58, overapproximation of to_real at line 55. Possible FailurePath: [L50] double x = __VERIFIER_nondet_double(); [L17] __int32_t hx, lx; [L19] ieee_double_shape_type ew_u; [L20] ew_u.value = (x) [L21] EXPR ew_u.parts.msw [L21] (hx) = ew_u.parts.msw [L22] EXPR ew_u.parts.lsw [L22] (lx) = ew_u.parts.lsw [L24] hx &= 0x7fffffff [L25] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L26] hx = 0x7ff00000 - hx [L27] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L53] !isinf_double(x) && !isnan_double(x) [L31] return x != x; [L53] !isinf_double(x) && !isnan_double(x) [L53] COND TRUE !isinf_double(x) && !isnan_double(x) [L34] __int32_t hx; [L36] ieee_double_shape_type gh_u; [L37] gh_u.value = (x) [L38] EXPR gh_u.parts.msw [L38] (hx) = gh_u.parts.msw [L40] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L55] double res = isfinite_double(x); [L58] COND TRUE res == 0.0 [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 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=20occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 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 0.1.25-f470102 [2019-12-07 11:58:47,716 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 11:58:47,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:58:47,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:58:47,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:58:47,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:58:47,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:58:47,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:58:47,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:58:47,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:58:47,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:58:47,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:58:47,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:58:47,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 11:58:47,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:58:47,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:58:47,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:58:47,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:58:47,762 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:58:47,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:58:47,762 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:58:47,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:58:47,763 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:58:47,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:58:47,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:58:47,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:58:47,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:58:47,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:58:47,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:58:47,766 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_4f87f435-729e-4748-bb7b-36f3a429ec56/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 -> ee5ae4bbae935ee4fc29ea9e50ac81dc390a543f [2019-12-07 11:58:47,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:58:47,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:58:47,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:58:47,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:58:47,943 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:58:47,944 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2019-12-07 11:58:47,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/9bca5ab11/b6583de91e754419b3739e940aa338a3/FLAGbd3042e0e [2019-12-07 11:58:48,380 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:58:48,381 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2019-12-07 11:58:48,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/9bca5ab11/b6583de91e754419b3739e940aa338a3/FLAGbd3042e0e [2019-12-07 11:58:48,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/data/9bca5ab11/b6583de91e754419b3739e940aa338a3 [2019-12-07 11:58:48,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:58:48,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:58:48,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:48,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:58:48,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:58:48,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10831c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48, skipping insertion in model container [2019-12-07 11:58:48,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:58:48,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:58:48,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:48,898 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:58:48,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:48,932 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:58:48,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48 WrapperNode [2019-12-07 11:58:48,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:48,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:48,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:58:48,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:58:48,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:48,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:58:48,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:58:48,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:58:48,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:49,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:58:49,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:58:49,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:58:49,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:58:49,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 [2019-12-07 11:58:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 11:58:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:58:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 11:58:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:58:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:58:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:58:49,307 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:58:49,307 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 11:58:49,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:49 BoogieIcfgContainer [2019-12-07 11:58:49,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:58:49,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:58:49,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:58:49,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:58:49,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:58:48" (1/3) ... [2019-12-07 11:58:49,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958dc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:49, skipping insertion in model container [2019-12-07 11:58:49,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (2/3) ... [2019-12-07 11:58:49,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958dc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:49, skipping insertion in model container [2019-12-07 11:58:49,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:49" (3/3) ... [2019-12-07 11:58:49,314 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2019-12-07 11:58:49,320 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:58:49,324 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:58:49,331 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:58:49,346 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:58:49,346 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:58:49,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:58:49,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:58:49,347 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:58:49,347 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:58:49,347 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:58:49,347 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:58:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 11:58:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:58:49,360 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,361 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:49,361 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2019-12-07 11:58:49,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:58:49,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907839225] [2019-12-07 11:58:49,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 [2019-12-07 11:58:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,434 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 11:58:49,437 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:58:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:49,446 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:58:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:49,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907839225] [2019-12-07 11:58:49,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:49,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 11:58:49,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359211812] [2019-12-07 11:58:49,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:58:49,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 11:58:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:58:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:58:49,463 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-12-07 11:58:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,474 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2019-12-07 11:58:49,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:58:49,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-12-07 11:58:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,480 INFO L225 Difference]: With dead ends: 38 [2019-12-07 11:58:49,480 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 11:58:49,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:58:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 11:58:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 11:58:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 11:58:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 11:58:49,503 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2019-12-07 11:58:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,503 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 11:58:49,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:58:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 11:58:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 11:58:49,504 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:49,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:58:49,705 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:49,706 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2019-12-07 11:58:49,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:58:49,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432529481] [2019-12-07 11:58:49,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 [2019-12-07 11:58:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,818 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:58:49,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:58:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:49,829 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:58:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:58:49,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432529481] [2019-12-07 11:58:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:49,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 11:58:49,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361703670] [2019-12-07 11:58:49,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:49,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 11:58:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:49,833 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2019-12-07 11:58:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,846 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-12-07 11:58:49,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:49,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-12-07 11:58:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,848 INFO L225 Difference]: With dead ends: 24 [2019-12-07 11:58:49,848 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 11:58:49,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 11:58:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 11:58:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 11:58:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-07 11:58:49,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2019-12-07 11:58:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,851 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-07 11:58:49,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-07 11:58:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 11:58:49,851 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,851 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:58:50,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 11:58:50,052 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2019-12-07 11:58:50,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:58:50,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76466728] [2019-12-07 11:58:50,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/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 [2019-12-07 11:58:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:58:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:58:50,294 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 11:58:50,294 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:58:50,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 11:58:50,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:58:50 BoogieIcfgContainer [2019-12-07 11:58:50,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:58:50,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:58:50,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:58:50,533 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:58:50,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:49" (3/4) ... [2019-12-07 11:58:50,535 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:58:50,574 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4f87f435-729e-4748-bb7b-36f3a429ec56/bin/uautomizer/witness.graphml [2019-12-07 11:58:50,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:58:50,576 INFO L168 Benchmark]: Toolchain (without parser) took 1814.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -70.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:50,576 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:58:50,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:50,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:50,577 INFO L168 Benchmark]: Boogie Preprocessor took 22.03 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. [2019-12-07 11:58:50,577 INFO L168 Benchmark]: RCFGBuilder took 295.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:50,578 INFO L168 Benchmark]: TraceAbstraction took 1222.88 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: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:58:50,578 INFO L168 Benchmark]: Witness Printer took 41.56 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. [2019-12-07 11:58:50,580 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 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 58.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.03 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 295.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1222.88 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: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.56 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: 59]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] double x = __VERIFIER_nondet_double(); [L17] __int32_t hx, lx; [L19] ieee_double_shape_type ew_u; [L20] ew_u.value = (x) [L21] EXPR ew_u.parts.msw [L21] (hx) = ew_u.parts.msw [L22] EXPR ew_u.parts.lsw [L22] (lx) = ew_u.parts.lsw [L24] hx &= 0x7fffffff [L25] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L26] hx = 0x7ff00000 - hx [L27] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L53] !isinf_double(x) && !isnan_double(x) [L31] return x != x; [L53] !isinf_double(x) && !isnan_double(x) [L53] COND TRUE !isinf_double(x) && !isnan_double(x) [L34] __int32_t hx; [L36] ieee_double_shape_type gh_u; [L37] gh_u.value = (x) [L38] EXPR gh_u.parts.msw [L38] (hx) = gh_u.parts.msw [L40] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L55] double res = isfinite_double(x); [L58] COND TRUE res == 0.0 [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...