./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.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_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ...................................................................................................................................................................................................................................................................................................................... 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_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d .................................................................................................................................................................................................................................................................................................................................. 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 20:22:39,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:22:39,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:22:39,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:22:39,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:22:39,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:22:39,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:22:39,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:22:39,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:22:39,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:22:39,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:22:39,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:22:39,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:22:39,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:22:39,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:22:39,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:22:39,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:22:39,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:22:39,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:22:39,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:22:39,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:22:39,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:22:39,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:22:39,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:22:39,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:22:39,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:22:39,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:22:39,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:22:39,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:22:39,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:22:39,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:22:39,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:22:39,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:22:39,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:22:39,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:22:39,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:22:39,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:22:39,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:22:39,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:22:39,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:22:39,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:22:39,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:22:39,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:22:39,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:22:39,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:22:39,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:22:39,870 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:22:39,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:22:39,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:22:39,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:22:39,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:22:39,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:22:39,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:22:39,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:22:39,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:22:39,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:22:39,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:22:39,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:22:39,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:22:39,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:22:39,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:22:39,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:22:39,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:22:39,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:22:39,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:22:39,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:22:39,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:22:39,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:22:39,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:22:39,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:22:39,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:22:39,878 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_36af6b9f-e14d-49a8-84e9-233477940d74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-11-29 20:22:40,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:22:40,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:22:40,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:22:40,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:22:40,321 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:22:40,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-29 20:22:40,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/4655e6cb7/6e970e94c6da491e9cad2139961d985c/FLAG7b669893e [2020-11-29 20:22:41,122 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:22:41,123 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-29 20:22:41,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/4655e6cb7/6e970e94c6da491e9cad2139961d985c/FLAG7b669893e [2020-11-29 20:22:41,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/4655e6cb7/6e970e94c6da491e9cad2139961d985c [2020-11-29 20:22:41,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:22:41,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:22:41,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:41,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:22:41,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:22:41,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:41,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a233d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41, skipping insertion in model container [2020-11-29 20:22:41,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:41,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:22:41,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:22:41,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:41,781 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:22:41,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:41,888 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:22:41,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41 WrapperNode [2020-11-29 20:22:41,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:41,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:41,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:22:41,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:22:41,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:41,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:41,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:41,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:22:41,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:22:41,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:22:42,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... [2020-11-29 20:22:42,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:22:42,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:22:42,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:22:42,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:22:42,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 20:22:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:22:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:22:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:22:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 20:22:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 20:22:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:22:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:22:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:22:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 20:22:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:22:43,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:22:43,188 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 20:22:43,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:43 BoogieIcfgContainer [2020-11-29 20:22:43,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:22:43,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:22:43,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:22:43,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:22:43,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:22:41" (1/3) ... [2020-11-29 20:22:43,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4886b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:43, skipping insertion in model container [2020-11-29 20:22:43,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:41" (2/3) ... [2020-11-29 20:22:43,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4886b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:43, skipping insertion in model container [2020-11-29 20:22:43,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:43" (3/3) ... [2020-11-29 20:22:43,240 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-11-29 20:22:43,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:22:43,275 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:22:43,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:22:43,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:22:43,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:22:43,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:22:43,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:22:43,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:22:43,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:22:43,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:22:43,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:22:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-29 20:22:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:22:43,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:43,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:22:43,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:22:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-29 20:22:43,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:43,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217203459] [2020-11-29 20:22:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:43,587 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 20:22:43,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217203459] [2020-11-29 20:22:43,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:43,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:22:43,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137365307] [2020-11-29 20:22:43,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:22:43,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:43,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:22:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:22:43,621 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-29 20:22:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:43,672 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-29 20:22:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:22:43,674 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 20:22:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:43,697 INFO L225 Difference]: With dead ends: 119 [2020-11-29 20:22:43,704 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:22:43,708 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 20:22:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:22:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 20:22:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:22:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-29 20:22:43,773 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-29 20:22:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:43,774 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-29 20:22:43,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:22:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-29 20:22:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:22:43,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:43,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:22:43,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:22:43,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:22:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-29 20:22:43,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:43,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895161042] [2020-11-29 20:22:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:22:44,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:22:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:22:44,130 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:22:44,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:22:44,165 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:22:44,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:22:44,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:22:44 BoogieIcfgContainer [2020-11-29 20:22:44,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:22:44,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:22:44,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:22:44,216 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:22:44,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:43" (3/4) ... [2020-11-29 20:22:44,221 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:22:44,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:22:44,225 INFO L168 Benchmark]: Toolchain (without parser) took 2829.23 ms. Allocated memory is still 100.7 MB. Free memory was 66.8 MB in the beginning and 47.3 MB in the end (delta: 19.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:44,226 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 77.4 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:44,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.29 ms. Allocated memory is still 100.7 MB. Free memory was 66.6 MB in the beginning and 73.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:44,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.13 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 70.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:44,230 INFO L168 Benchmark]: Boogie Preprocessor took 52.26 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:44,231 INFO L168 Benchmark]: RCFGBuilder took 1141.55 ms. Allocated memory is still 100.7 MB. Free memory was 68.7 MB in the beginning and 34.6 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:44,233 INFO L168 Benchmark]: TraceAbstraction took 1021.06 ms. Allocated memory is still 100.7 MB. Free memory was 34.5 MB in the beginning and 47.9 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:44,234 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 100.7 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:44,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 77.4 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 494.29 ms. Allocated memory is still 100.7 MB. Free memory was 66.6 MB in the beginning and 73.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.13 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 70.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.26 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1141.55 ms. Allocated memory is still 100.7 MB. Free memory was 68.7 MB in the beginning and 34.6 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1021.06 ms. Allocated memory is still 100.7 MB. Free memory was 34.5 MB in the beginning and 47.9 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.58 ms. Allocated memory is still 100.7 MB. Free memory is still 47.3 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 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: 87 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=61occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 20:22:47,340 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 20:22:47,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:22:47,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:22:47,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:22:47,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:22:47,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:22:47,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:22:47,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:22:47,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:22:47,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:22:47,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:22:47,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:22:47,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:22:47,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:22:47,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:22:47,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:22:47,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:22:47,544 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:22:47,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:22:47,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:22:47,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:22:47,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:22:47,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:22:47,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:22:47,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:22:47,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:22:47,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:22:47,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:22:47,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:22:47,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:22:47,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:22:47,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:22:47,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:22:47,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:22:47,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:22:47,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:22:47,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:22:47,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:22:47,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:22:47,554 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:22:47,554 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:22:47,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:22:47,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:22:47,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:22:47,555 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_36af6b9f-e14d-49a8-84e9-233477940d74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-11-29 20:22:48,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:22:48,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:22:48,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:22:48,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:22:48,146 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:22:48,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-29 20:22:48,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/f15f88edb/5d654dfd7eb74290b069231f92580c0e/FLAG49b5470a3 [2020-11-29 20:22:48,990 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:22:48,993 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-29 20:22:49,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/f15f88edb/5d654dfd7eb74290b069231f92580c0e/FLAG49b5470a3 [2020-11-29 20:22:49,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/data/f15f88edb/5d654dfd7eb74290b069231f92580c0e [2020-11-29 20:22:49,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:22:49,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:22:49,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:49,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:22:49,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:22:49,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4f4507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49, skipping insertion in model container [2020-11-29 20:22:49,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:22:49,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:22:49,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:49,782 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:22:49,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:49,870 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:22:49,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49 WrapperNode [2020-11-29 20:22:49,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:49,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:49,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:22:49,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:22:49,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:49,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:22:49,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:22:49,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:22:49,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:49,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... [2020-11-29 20:22:50,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:22:50,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:22:50,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:22:50,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:22:50,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 20:22:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 20:22:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 20:22:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:22:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:22:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-29 20:22:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:22:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:22:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:22:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:22:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:22:54,707 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:22:54,708 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 20:22:54,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:54 BoogieIcfgContainer [2020-11-29 20:22:54,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:22:54,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:22:54,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:22:54,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:22:54,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:22:49" (1/3) ... [2020-11-29 20:22:54,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285ab95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:54, skipping insertion in model container [2020-11-29 20:22:54,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:49" (2/3) ... [2020-11-29 20:22:54,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285ab95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:54, skipping insertion in model container [2020-11-29 20:22:54,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:54" (3/3) ... [2020-11-29 20:22:54,721 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-11-29 20:22:54,735 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:22:54,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:22:54,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:22:54,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:22:54,786 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:22:54,786 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:22:54,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:22:54,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:22:54,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:22:54,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:22:54,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:22:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-29 20:22:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:22:54,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:54,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:22:54,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:22:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-29 20:22:54,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:22:54,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661712932] [2020-11-29 20:22:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 20:22:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:56,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:22:56,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:22:56,284 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 20:22:56,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:22:56,291 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 20:22:56,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661712932] [2020-11-29 20:22:56,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:56,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:22:56,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218402687] [2020-11-29 20:22:56,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:22:56,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:22:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:22:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:22:56,313 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-29 20:22:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:56,340 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-29 20:22:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:22:56,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 20:22:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:56,354 INFO L225 Difference]: With dead ends: 119 [2020-11-29 20:22:56,354 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:22:56,358 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 [2020-11-29 20:22:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:22:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 20:22:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:22:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-29 20:22:56,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-29 20:22:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:56,416 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-29 20:22:56,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:22:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-29 20:22:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:22:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:56,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:22:56,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:22:56,632 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:22:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-29 20:22:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:22:56,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105799220] [2020-11-29 20:22:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/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 20:22:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:22:58,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:23:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:23:00,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:23:00,573 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:23:00,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:23:00,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:23:00,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:23:00 BoogieIcfgContainer [2020-11-29 20:23:00,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:23:00,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:23:00,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:23:00,828 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:23:00,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:54" (3/4) ... [2020-11-29 20:23:00,831 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:23:00,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_36af6b9f-e14d-49a8-84e9-233477940d74/bin/uautomizer/witness.graphml [2020-11-29 20:23:00,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:23:00,899 INFO L168 Benchmark]: Toolchain (without parser) took 11595.61 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.5 MB in the beginning and 40.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,900 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 46.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:23:00,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.77 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 30.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.24 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 28.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,902 INFO L168 Benchmark]: Boogie Preprocessor took 69.67 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 25.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,903 INFO L168 Benchmark]: RCFGBuilder took 4696.36 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 45.9 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,904 INFO L168 Benchmark]: TraceAbstraction took 6113.99 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,905 INFO L168 Benchmark]: Witness Printer took 69.07 ms. Allocated memory is still 71.3 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:23:00,910 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 52.4 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 46.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.77 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 30.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.24 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 28.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.67 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 25.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4696.36 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 45.9 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6113.99 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 69.07 ms. Allocated memory is still 71.3 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 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: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 3.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 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...