./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ........................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 20:06:47,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:06:47,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:06:47,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:06:47,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:06:47,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:06:47,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:06:47,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:06:47,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:06:47,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:06:47,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:06:47,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:06:47,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:06:47,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:06:47,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:06:47,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:06:47,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:06:47,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:06:47,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:06:47,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:06:47,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:06:47,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:06:47,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:06:47,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:06:47,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:06:47,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:06:47,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:06:47,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:06:47,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:06:47,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:06:47,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:06:47,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:06:47,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:06:47,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:06:47,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:06:47,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:06:47,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:06:47,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:06:47,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:06:47,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:06:47,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:06:47,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:06:47,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:06:47,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:06:47,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:06:47,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:06:47,872 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:06:47,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:06:47,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:06:47,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:06:47,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:06:47,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:06:47,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:06:47,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:06:47,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:06:47,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:06:47,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:06:47,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:06:47,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:06:47,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:06:47,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:06:47,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:06:47,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:06:47,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:06:47,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:06:47,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:06:47,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:06:47,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:06:47,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:06:47,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:06:47,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:06:47,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-29 20:06:48,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:06:48,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:06:48,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:06:48,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:06:48,203 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:06:48,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-29 20:06:48,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/2d81e8ca2/7ebbaf7f2fed426fb75165770d4abd16/FLAGeab242967 [2020-11-29 20:06:48,860 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:06:48,861 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-29 20:06:48,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/2d81e8ca2/7ebbaf7f2fed426fb75165770d4abd16/FLAGeab242967 [2020-11-29 20:06:49,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/2d81e8ca2/7ebbaf7f2fed426fb75165770d4abd16 [2020-11-29 20:06:49,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:06:49,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:06:49,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:06:49,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:06:49,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:06:49,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d039863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49, skipping insertion in model container [2020-11-29 20:06:49,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:06:49,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:06:49,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:06:49,642 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:06:49,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:06:49,784 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:06:49,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49 WrapperNode [2020-11-29 20:06:49,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:06:49,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:06:49,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:06:49,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:06:49,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:06:49,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:06:49,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:06:49,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:06:49,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... [2020-11-29 20:06:49,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:06:49,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:06:49,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:06:49,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:06:49,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/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 [2020-11-29 20:06:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:06:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:06:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:06:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 20:06:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 20:06:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:06:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:06:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 20:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:06:50,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:06:50,908 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 20:06:50,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:06:50 BoogieIcfgContainer [2020-11-29 20:06:50,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:06:50,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:06:50,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:06:50,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:06:50,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:06:49" (1/3) ... [2020-11-29 20:06:50,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a66b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:06:50, skipping insertion in model container [2020-11-29 20:06:50,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:49" (2/3) ... [2020-11-29 20:06:50,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a66b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:06:50, skipping insertion in model container [2020-11-29 20:06:50,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:06:50" (3/3) ... [2020-11-29 20:06:50,937 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-29 20:06:50,951 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:06:50,962 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:06:50,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:06:51,047 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:06:51,047 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:06:51,048 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:06:51,048 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:06:51,048 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:06:51,048 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:06:51,048 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:06:51,048 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:06:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-29 20:06:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:06:51,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:06:51,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:06:51,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:06:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:06:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-11-29 20:06:51,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:06:51,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545293127] [2020-11-29 20:06:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:06:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:06:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:06:51,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545293127] [2020-11-29 20:06:51,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:06:51,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:06:51,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492728957] [2020-11-29 20:06:51,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:06:51,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:06:51,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:06:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:06:51,395 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-11-29 20:06:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:06:51,463 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-11-29 20:06:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:06:51,465 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 20:06:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:06:51,498 INFO L225 Difference]: With dead ends: 120 [2020-11-29 20:06:51,498 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 20:06:51,502 INFO L677 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 [2020-11-29 20:06:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 20:06:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-29 20:06:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 20:06:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-11-29 20:06:51,561 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-11-29 20:06:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:06:51,561 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-11-29 20:06:51,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:06:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-11-29 20:06:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:06:51,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:06:51,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:06:51,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:06:51,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:06:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:06:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-11-29 20:06:51,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:06:51,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677511019] [2020-11-29 20:06:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:06:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:06:51,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:06:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:06:51,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:06:51,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:06:51,862 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:06:51,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:06:51,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:06:51 BoogieIcfgContainer [2020-11-29 20:06:51,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:06:51,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:06:51,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:06:51,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:06:51,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:06:50" (3/4) ... [2020-11-29 20:06:51,931 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:06:51,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:06:51,935 INFO L168 Benchmark]: Toolchain (without parser) took 2718.39 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.7 MB in the beginning and 75.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:06:51,936 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:06:51,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.71 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 86.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:06:51,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.72 ms. Allocated memory is still 113.2 MB. Free memory was 85.6 MB in the beginning and 83.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:06:51,940 INFO L168 Benchmark]: Boogie Preprocessor took 64.69 ms. Allocated memory is still 113.2 MB. Free memory was 83.6 MB in the beginning and 80.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:06:51,942 INFO L168 Benchmark]: RCFGBuilder took 978.02 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 47.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:06:51,943 INFO L168 Benchmark]: TraceAbstraction took 1012.92 ms. Allocated memory is still 113.2 MB. Free memory was 47.1 MB in the beginning and 75.7 MB in the end (delta: -28.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:06:51,944 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 113.2 MB. Free memory is still 75.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:06:51,958 INFO L339 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 86.0 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.71 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 86.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.72 ms. Allocated memory is still 113.2 MB. Free memory was 85.6 MB in the beginning and 83.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.69 ms. Allocated memory is still 113.2 MB. Free memory was 83.6 MB in the beginning and 80.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 978.02 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 47.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1012.92 ms. Allocated memory is still 113.2 MB. Free memory was 47.1 MB in the beginning and 75.7 MB in the end (delta: -28.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 113.2 MB. Free memory is still 75.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-29 20:06:54,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:06:54,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:06:54,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:06:54,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:06:54,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:06:55,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:06:55,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:06:55,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:06:55,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:06:55,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:06:55,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:06:55,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:06:55,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:06:55,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:06:55,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:06:55,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:06:55,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:06:55,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:06:55,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:06:55,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:06:55,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:06:55,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:06:55,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:06:55,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:06:55,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:06:55,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:06:55,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:06:55,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:06:55,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:06:55,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:06:55,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:06:55,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:06:55,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:06:55,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:06:55,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:06:55,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:06:55,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:06:55,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:06:55,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:06:55,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:06:55,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:06:55,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:06:55,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:06:55,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:06:55,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:06:55,152 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:06:55,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:06:55,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:06:55,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:06:55,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:06:55,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:06:55,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:06:55,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:06:55,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:06:55,156 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:06:55,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:06:55,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:06:55,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:06:55,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:06:55,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:06:55,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:06:55,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:06:55,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:06:55,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:06:55,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:06:55,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:06:55,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:06:55,159 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:06:55,159 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:06:55,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:06:55,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:06:55,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:06:55,170 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-29 20:06:55,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:06:55,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:06:55,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:06:55,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:06:55,652 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:06:55,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-29 20:06:55,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/336300ce7/810691655fe04f0fb571e31c7295ef42/FLAGef651a0b0 [2020-11-29 20:06:56,432 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:06:56,433 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-29 20:06:56,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/336300ce7/810691655fe04f0fb571e31c7295ef42/FLAGef651a0b0 [2020-11-29 20:06:56,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/data/336300ce7/810691655fe04f0fb571e31c7295ef42 [2020-11-29 20:06:56,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:06:56,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:06:56,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:06:56,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:06:56,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:06:56,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:06:56" (1/1) ... [2020-11-29 20:06:56,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3d1340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:56, skipping insertion in model container [2020-11-29 20:06:56,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:06:56" (1/1) ... [2020-11-29 20:06:56,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:06:56,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:06:57,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:06:57,240 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:06:57,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:06:57,399 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:06:57,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57 WrapperNode [2020-11-29 20:06:57,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:06:57,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:06:57,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:06:57,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:06:57,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:06:57,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:06:57,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:06:57,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:06:57,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... [2020-11-29 20:06:57,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:06:57,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:06:57,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:06:57,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:06:57,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/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 [2020-11-29 20:06:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:06:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:06:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:06:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:06:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:07:02,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:07:02,119 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 20:07:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:02 BoogieIcfgContainer [2020-11-29 20:07:02,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:07:02,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:07:02,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:07:02,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:07:02,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:06:56" (1/3) ... [2020-11-29 20:07:02,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e332405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:02, skipping insertion in model container [2020-11-29 20:07:02,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:06:57" (2/3) ... [2020-11-29 20:07:02,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e332405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:02, skipping insertion in model container [2020-11-29 20:07:02,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:02" (3/3) ... [2020-11-29 20:07:02,131 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-29 20:07:02,145 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:07:02,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:07:02,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:07:02,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:07:02,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:07:02,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:07:02,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:07:02,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:07:02,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:07:02,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:07:02,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:07:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-29 20:07:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:07:02,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:02,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:02,226 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:02,233 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-11-29 20:07:02,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:07:02,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045800303] [2020-11-29 20:07:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/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 [2020-11-29 20:07:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:03,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:07:03,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:07:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:03,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:07:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:03,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045800303] [2020-11-29 20:07:03,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:03,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:07:03,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132208588] [2020-11-29 20:07:03,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:07:03,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:07:03,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:07:03,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:07:03,602 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-11-29 20:07:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:03,632 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-11-29 20:07:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:07:03,633 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 20:07:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:03,652 INFO L225 Difference]: With dead ends: 120 [2020-11-29 20:07:03,652 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 20:07:03,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:07:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 20:07:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-29 20:07:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 20:07:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-11-29 20:07:03,723 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-11-29 20:07:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:03,724 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-11-29 20:07:03,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:07:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-11-29 20:07:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:07:03,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:03,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:03,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:07:03,945 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-11-29 20:07:03,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:07:03,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972810879] [2020-11-29 20:07:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/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 [2020-11-29 20:07:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:07:05,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:07:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:07:07,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:07:07,731 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:07:07,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:07:07,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:07:07,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:07:07 BoogieIcfgContainer [2020-11-29 20:07:07,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:07:07,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:07:07,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:07:07,994 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:07:07,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:02" (3/4) ... [2020-11-29 20:07:07,997 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:07:08,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c6f5ff9-e71a-4b1d-81b9-346c99276190/bin/uautomizer/witness.graphml [2020-11-29 20:07:08,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:07:08,065 INFO L168 Benchmark]: Toolchain (without parser) took 11261.79 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 37.5 MB in the beginning and 36.6 MB in the end (delta: 862.9 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,066 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:07:08,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 38.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 36.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,069 INFO L168 Benchmark]: Boogie Preprocessor took 98.32 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 34.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,070 INFO L168 Benchmark]: RCFGBuilder took 4530.11 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 34.1 MB in the beginning and 56.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,071 INFO L168 Benchmark]: TraceAbstraction took 5869.49 ms. Allocated memory is still 77.6 MB. Free memory was 55.7 MB in the beginning and 39.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,072 INFO L168 Benchmark]: Witness Printer took 69.78 ms. Allocated memory is still 77.6 MB. Free memory was 39.2 MB in the beginning and 36.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:08,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 595.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 38.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 36.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.32 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 34.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4530.11 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 34.1 MB in the beginning and 56.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5869.49 ms. Allocated memory is still 77.6 MB. Free memory was 55.7 MB in the beginning and 39.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.78 ms. Allocated memory is still 77.6 MB. Free memory was 39.2 MB in the beginning and 36.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 1 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...