./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.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_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 85e5b86abce931d95696fba33e25199d528f9f0e ..................................................................................................................................................................................................................................................................................................................................................... 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_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 85e5b86abce931d95696fba33e25199d528f9f0e ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:04:20,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:20,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:20,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:20,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:20,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:20,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:20,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:20,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:20,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:20,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:20,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:20,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:20,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:20,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:20,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:20,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:20,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:20,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:20,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:20,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:20,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:20,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:20,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:20,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:20,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:20,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:20,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:20,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:20,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:20,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:20,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:20,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:20,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:20,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:20,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:20,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:20,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:20,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:20,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:20,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:20,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:04:20,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:20,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:20,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:20,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:20,954 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:20,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:20,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:20,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:20,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:20,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:20,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:04:20,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:20,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:04:20,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:20,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:20,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:20,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:04:20,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:20,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:20,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:20,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:20,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:20,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:20,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:20,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:04:20,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:20,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:04:20,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:04:20,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:20,962 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_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-11-28 03:04:21,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:21,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:21,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:21,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:21,376 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:21,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-28 03:04:21,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/0b15fbb81/acf24c43d0d74ac2aab8a7bf8688d31f/FLAG822ad4279 [2020-11-28 03:04:22,057 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:22,058 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-28 03:04:22,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/0b15fbb81/acf24c43d0d74ac2aab8a7bf8688d31f/FLAG822ad4279 [2020-11-28 03:04:22,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/0b15fbb81/acf24c43d0d74ac2aab8a7bf8688d31f [2020-11-28 03:04:22,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:22,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:22,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:22,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:22,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:22,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c38888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22, skipping insertion in model container [2020-11-28 03:04:22,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:22,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:22,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:22,699 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:22,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:22,765 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:22,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22 WrapperNode [2020-11-28 03:04:22,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:22,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:22,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:22,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:22,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:22,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:22,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:22,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:22,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... [2020-11-28 03:04:22,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:22,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:22,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:22,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:22,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 [2020-11-28 03:04:23,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:04:23,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:04:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:04:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:04:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:04:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:04:23,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:23,883 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-28 03:04:23,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:23 BoogieIcfgContainer [2020-11-28 03:04:23,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:23,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:23,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:23,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:23,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:22" (1/3) ... [2020-11-28 03:04:23,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6cf438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:23, skipping insertion in model container [2020-11-28 03:04:23,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:22" (2/3) ... [2020-11-28 03:04:23,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6cf438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:23, skipping insertion in model container [2020-11-28 03:04:23,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:23" (3/3) ... [2020-11-28 03:04:23,898 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-28 03:04:23,912 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:23,918 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:04:23,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:04:23,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:23,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:04:23,969 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:23,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:23,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:23,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:23,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:23,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-28 03:04:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:04:23,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:23,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:23,998 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-11-28 03:04:24,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:24,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540570244] [2020-11-28 03:04:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540570244] [2020-11-28 03:04:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:24,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484508431] [2020-11-28 03:04:24,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:04:24,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:24,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:04:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:24,235 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-28 03:04:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:24,275 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-11-28 03:04:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:04:24,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:04:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:24,301 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:04:24,301 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:04:24,304 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 [2020-11-28 03:04:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:04:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-28 03:04:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 03:04:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-11-28 03:04:24,369 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-11-28 03:04:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:24,370 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-11-28 03:04:24,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:04:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-11-28 03:04:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:04:24,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:24,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:24,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:04:24,374 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,376 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-11-28 03:04:24,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:24,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211413049] [2020-11-28 03:04:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211413049] [2020-11-28 03:04:24,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:24,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:04:24,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044385165] [2020-11-28 03:04:24,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:24,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:24,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:24,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:24,595 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2020-11-28 03:04:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:24,617 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-28 03:04:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:24,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:04:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:24,619 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:04:24,619 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:04:24,620 INFO L677 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 [2020-11-28 03:04:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:04:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-28 03:04:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 03:04:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-11-28 03:04:24,628 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2020-11-28 03:04:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:24,629 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-11-28 03:04:24,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-11-28 03:04:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:04:24,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:24,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:24,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:04:24,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash -371067880, now seen corresponding path program 1 times [2020-11-28 03:04:24,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:24,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170435821] [2020-11-28 03:04:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:24,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:24,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:24,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:24,835 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:04:24,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:04:24,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:24 BoogieIcfgContainer [2020-11-28 03:04:24,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:24,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:24,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:24,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:24,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:23" (3/4) ... [2020-11-28 03:04:24,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:24,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:24,940 INFO L168 Benchmark]: Toolchain (without parser) took 2552.63 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 96.7 MB in the end (delta: -27.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:24,941 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:24,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.13 ms. Allocated memory is still 98.6 MB. Free memory was 69.1 MB in the beginning and 74.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:24,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.09 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:24,944 INFO L168 Benchmark]: Boogie Preprocessor took 62.87 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 70.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:24,945 INFO L168 Benchmark]: RCFGBuilder took 957.03 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.0 MB in the beginning and 92.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:24,946 INFO L168 Benchmark]: TraceAbstraction took 1042.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 96.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:24,947 INFO L168 Benchmark]: Witness Printer took 6.00 ms. Allocated memory is still 119.5 MB. Free memory is still 96.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:24,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.13 ms. Allocated memory is still 98.6 MB. Free memory was 69.1 MB in the beginning and 74.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.09 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.87 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 70.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 957.03 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.0 MB in the beginning and 92.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1042.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 96.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.00 ms. Allocated memory is still 119.5 MB. Free memory is still 96.7 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 someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; VAL [one_modf=1] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1] [L31] COND TRUE j0 < 20 VAL [one_modf=1] [L32] COND TRUE j0 < 0 VAL [one_modf=1] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [one_modf=1] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 0 SDslu, 40 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=45occurred 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 [2020-11-28 03:04:27,876 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 03:04:28,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:28,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:28,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:28,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:28,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:28,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:28,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:28,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:28,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:28,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:28,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:28,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:04:28,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:28,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:28,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:28,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:28,095 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:28,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:28,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:28,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:28,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:28,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:04:28,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:28,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:04:28,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:04:28,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:04:28,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:28,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:28,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:28,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:04:28,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:28,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:28,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:28,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:28,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:28,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:28,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:28,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:04:28,102 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:04:28,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:04:28,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:04:28,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:28,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:04:28,103 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_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-11-28 03:04:28,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:28,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:28,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:28,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:28,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:28,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-28 03:04:28,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/c547c4587/61f83f6a0bdc437f9eaa16ec5e69b195/FLAG80f6e1869 [2020-11-28 03:04:29,374 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:29,374 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-11-28 03:04:29,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/c547c4587/61f83f6a0bdc437f9eaa16ec5e69b195/FLAG80f6e1869 [2020-11-28 03:04:29,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/data/c547c4587/61f83f6a0bdc437f9eaa16ec5e69b195 [2020-11-28 03:04:29,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:29,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:29,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:29,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:29,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:29,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:29" (1/1) ... [2020-11-28 03:04:29,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4053a965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:29, skipping insertion in model container [2020-11-28 03:04:29,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:29" (1/1) ... [2020-11-28 03:04:29,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:29,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:30,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:30,116 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:30,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:30,255 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:30,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30 WrapperNode [2020-11-28 03:04:30,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:30,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:30,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:30,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:30,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:30,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:30,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:30,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:30,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... [2020-11-28 03:04:30,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:30,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:30,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:30,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:30,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 [2020-11-28 03:04:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:04:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:04:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:04:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:04:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:04:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:04:32,328 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:32,328 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-28 03:04:32,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:32 BoogieIcfgContainer [2020-11-28 03:04:32,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:32,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:32,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:32,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:32,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:29" (1/3) ... [2020-11-28 03:04:32,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66df1494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:32, skipping insertion in model container [2020-11-28 03:04:32,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:30" (2/3) ... [2020-11-28 03:04:32,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66df1494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:32, skipping insertion in model container [2020-11-28 03:04:32,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:32" (3/3) ... [2020-11-28 03:04:32,342 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-28 03:04:32,356 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:32,361 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:04:32,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:04:32,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:32,424 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:04:32,424 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:32,424 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:32,424 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:32,425 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:32,425 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:32,425 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-28 03:04:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:04:32,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:32,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:32,454 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:32,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:32,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-11-28 03:04:32,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:32,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722037765] [2020-11-28 03:04:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 [2020-11-28 03:04:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:32,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:04:32,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:32,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:32,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722037765] [2020-11-28 03:04:32,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:32,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:04:32,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975326489] [2020-11-28 03:04:32,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:04:32,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:04:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:32,795 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-28 03:04:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:32,834 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-11-28 03:04:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:04:32,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:04:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:32,850 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:04:32,850 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:04:32,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:04:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-28 03:04:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 03:04:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-11-28 03:04:32,905 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-11-28 03:04:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:32,905 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-11-28 03:04:32,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:04:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-11-28 03:04:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:04:32,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:32,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:33,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:04:33,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:33,127 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-11-28 03:04:33,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:33,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105334237] [2020-11-28 03:04:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 [2020-11-28 03:04:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:33,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:33,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:33,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105334237] [2020-11-28 03:04:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:04:33,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61431290] [2020-11-28 03:04:33,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:04:33,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:33,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:04:33,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:04:33,775 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2020-11-28 03:04:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:34,769 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-11-28 03:04:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:04:34,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:04:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:34,772 INFO L225 Difference]: With dead ends: 48 [2020-11-28 03:04:34,772 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:04:34,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:04:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:04:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:04:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:04:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-28 03:04:34,780 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2020-11-28 03:04:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:34,781 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-28 03:04:34,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:04:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-28 03:04:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:04:34,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:34,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:35,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:04:35,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:35,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1834889353, now seen corresponding path program 1 times [2020-11-28 03:04:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:35,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885497855] [2020-11-28 03:04:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/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 [2020-11-28 03:04:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:35,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:35,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:35,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:35,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885497855] [2020-11-28 03:04:35,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:35,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:04:35,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424861744] [2020-11-28 03:04:35,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:35,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:35,558 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2020-11-28 03:04:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:35,607 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-28 03:04:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:35,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:04:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:35,609 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:04:35,609 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:04:35,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:04:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:04:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:04:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-11-28 03:04:35,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2020-11-28 03:04:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:35,616 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-11-28 03:04:35,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-11-28 03:04:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:04:35,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:35,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:35,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:04:35,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1046870301, now seen corresponding path program 1 times [2020-11-28 03:04:35,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:35,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772007073] [2020-11-28 03:04:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:36,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:37,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:37,350 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:04:37,351 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:04:37,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:04:37,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:37 BoogieIcfgContainer [2020-11-28 03:04:37,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:37,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:37,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:37,619 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:37,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:32" (3/4) ... [2020-11-28 03:04:37,626 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:04:37,705 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1fb260f-7c18-42ea-bce3-e980f11fa9ee/bin/uautomizer/witness.graphml [2020-11-28 03:04:37,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:37,708 INFO L168 Benchmark]: Toolchain (without parser) took 8009.78 ms. Allocated memory was 58.7 MB in the beginning and 90.2 MB in the end (delta: 31.5 MB). Free memory was 36.7 MB in the beginning and 64.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,708 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:37,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.34 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,711 INFO L168 Benchmark]: Boogie Preprocessor took 83.28 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 34.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,712 INFO L168 Benchmark]: RCFGBuilder took 1902.34 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 50.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,713 INFO L168 Benchmark]: TraceAbstraction took 5285.34 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 67.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,714 INFO L168 Benchmark]: Witness Printer took 87.09 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 64.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:37,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 39.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.34 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.28 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 34.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1902.34 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 50.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5285.34 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 67.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * Witness Printer took 87.09 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 64.5 MB in the end (delta: 2.7 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: [L19] static const double one_modf = 1.0; VAL [one_modf=1.0] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1.0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1.0] [L31] COND FALSE !(j0 < 20) VAL [one_modf=1.0] [L67] COND TRUE j0 > 51 [L68] __uint32_t high; [L69] *iptr = x * one_modf VAL [one_modf=1.0] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (high) = gh_u.parts.msw [L76] ieee_double_shape_type iw_u; [L77] iw_u.parts.msw = (high & 0x80000000) [L78] iw_u.parts.lsw = (0) [L79] EXPR iw_u.value [L79] (x) = iw_u.value [L81] return x; VAL [one_modf=1.0] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1.0] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 35 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 5 QuantifiedInterpolants, 2708 SizeOfPredicates, 8 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...