./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.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_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 9ef877ce38bde19caca23c0b110041aea30d9b13 ........................................................................................................................................................................................................................................................................................................ 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_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 9ef877ce38bde19caca23c0b110041aea30d9b13 .................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:11:09,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:09,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:10,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:10,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:10,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:10,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:10,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:10,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:10,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:10,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:10,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:10,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:10,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:10,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:10,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:10,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:10,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:10,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:10,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:10,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:10,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:10,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:10,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:10,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:10,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:10,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:10,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:10,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:10,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:10,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:10,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:10,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:10,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:10,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:10,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:10,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:10,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:10,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:10,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:10,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:10,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:11:10,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:10,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:10,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:10,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:10,203 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:10,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:10,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:10,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:11:10,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:10,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:10,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:10,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:10,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:10,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:10,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:10,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:10,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:10,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:10,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:10,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:10,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:10,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:10,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:10,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:10,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:10,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:11:10,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:11:10,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:10,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:10,211 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_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-11-30 00:11:10,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:10,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:10,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:10,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:10,558 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:10,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-30 00:11:10,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/ad2d3b15f/89e87bb8b86640459a2ee543ac6387a6/FLAG2f863d314 [2020-11-30 00:11:11,222 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:11,222 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-30 00:11:11,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/ad2d3b15f/89e87bb8b86640459a2ee543ac6387a6/FLAG2f863d314 [2020-11-30 00:11:11,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/ad2d3b15f/89e87bb8b86640459a2ee543ac6387a6 [2020-11-30 00:11:11,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:11,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:11,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:11,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:11,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:11,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:11,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5cf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11, skipping insertion in model container [2020-11-30 00:11:11,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:11,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:11,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:11,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:11,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:11,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:11,949 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:11,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11 WrapperNode [2020-11-30 00:11:11,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:11,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:11,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:11,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:11,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:11,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:12,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:12,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:12,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:12,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... [2020-11-30 00:11:12,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:12,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:12,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:12,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:12,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 [2020-11-30 00:11:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:11:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:11:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:11:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:11:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:11:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:12,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:12,866 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:11:12,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:12 BoogieIcfgContainer [2020-11-30 00:11:12,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:12,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:12,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:12,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:12,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:11" (1/3) ... [2020-11-30 00:11:12,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7129d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:12, skipping insertion in model container [2020-11-30 00:11:12,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:11" (2/3) ... [2020-11-30 00:11:12,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7129d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:12, skipping insertion in model container [2020-11-30 00:11:12,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:12" (3/3) ... [2020-11-30 00:11:12,878 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-11-30 00:11:12,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:12,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:12,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:12,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:12,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:12,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:12,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:12,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:12,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:12,965 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:12,965 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 00:11:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:11:12,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:12,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:12,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-30 00:11:13,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:13,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265517273] [2020-11-30 00:11:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:13,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265517273] [2020-11-30 00:11:13,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:13,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:11:13,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333689151] [2020-11-30 00:11:13,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:13,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:13,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:13,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:13,196 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-30 00:11:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:13,220 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-30 00:11:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:13,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:11:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:13,246 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:11:13,246 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:11:13,249 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 [2020-11-30 00:11:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:11:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:11:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:11:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-30 00:11:13,306 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-30 00:11:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:13,306 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 00:11:13,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-30 00:11:13,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:11:13,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:13,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:13,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:11:13,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-30 00:11:13,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:13,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442201736] [2020-11-30 00:11:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:13,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:13,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:13,738 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:13,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:11:13,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:11:13,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:13 BoogieIcfgContainer [2020-11-30 00:11:13,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:13,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:13,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:13,800 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:13,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:12" (3/4) ... [2020-11-30 00:11:13,804 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:11:13,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:13,809 INFO L168 Benchmark]: Toolchain (without parser) took 2235.63 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 101.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,810 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.41 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 106.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.12 ms. Allocated memory is still 130.0 MB. Free memory was 106.6 MB in the beginning and 104.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,813 INFO L168 Benchmark]: Boogie Preprocessor took 63.61 ms. Allocated memory is still 130.0 MB. Free memory was 104.8 MB in the beginning and 103.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,814 INFO L168 Benchmark]: RCFGBuilder took 764.21 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 81.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,816 INFO L168 Benchmark]: TraceAbstraction took 928.50 ms. Allocated memory is still 130.0 MB. Free memory was 80.6 MB in the beginning and 101.8 MB in the end (delta: -21.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,817 INFO L168 Benchmark]: Witness Printer took 5.04 ms. Allocated memory is still 130.0 MB. Free memory is still 101.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.41 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 106.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.12 ms. Allocated memory is still 130.0 MB. Free memory was 106.6 MB in the beginning and 104.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.61 ms. Allocated memory is still 130.0 MB. Free memory was 104.8 MB in the beginning and 103.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 764.21 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 81.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 928.50 ms. Allocated memory is still 130.0 MB. Free memory was 80.6 MB in the beginning and 101.8 MB in the end (delta: -21.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.04 ms. Allocated memory is still 130.0 MB. Free memory is still 101.1 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 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=28occurred 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, 28 NumberOfCodeBlocks, 28 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 [2020-11-30 00:11:16,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:16,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:16,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:16,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:16,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:16,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:16,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:16,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:16,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:16,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:16,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:16,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:16,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:16,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:16,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:16,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:16,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:16,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:16,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:16,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:16,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:16,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:16,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:16,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:16,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:16,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:16,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:16,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:16,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:16,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:16,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:16,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:16,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:16,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:16,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:16,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:16,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:16,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:16,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:16,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:16,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:11:16,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:16,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:16,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:16,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:16,979 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:16,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:16,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:16,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:16,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:16,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:16,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:16,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:16,982 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:11:16,982 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:11:16,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:16,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:16,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:16,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:16,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:16,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:16,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:16,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:16,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:16,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:16,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:16,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:16,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:11:16,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:11:16,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:16,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:16,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:11:16,996 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_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-11-30 00:11:17,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:17,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:17,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:17,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:17,464 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:17,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-30 00:11:17,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/0740fa4d5/d9576193cc5a46aa87426348484b2742/FLAG7ad086972 [2020-11-30 00:11:18,193 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:18,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-11-30 00:11:18,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/0740fa4d5/d9576193cc5a46aa87426348484b2742/FLAG7ad086972 [2020-11-30 00:11:18,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/data/0740fa4d5/d9576193cc5a46aa87426348484b2742 [2020-11-30 00:11:18,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:18,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:18,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:18,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:18,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:18,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2e8b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18, skipping insertion in model container [2020-11-30 00:11:18,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:18,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:18,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:18,894 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:18,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:19,005 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:19,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19 WrapperNode [2020-11-30 00:11:19,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:19,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:19,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:19,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:19,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:19,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:19,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:19,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:19,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... [2020-11-30 00:11:19,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:19,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:19,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:19,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:19,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 [2020-11-30 00:11:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:11:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:11:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:11:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:11:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:19,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:11:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:19,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:19,886 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:11:19,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19 BoogieIcfgContainer [2020-11-30 00:11:19,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:19,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:19,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:19,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:19,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:18" (1/3) ... [2020-11-30 00:11:19,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:19, skipping insertion in model container [2020-11-30 00:11:19,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:19" (2/3) ... [2020-11-30 00:11:19,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:19, skipping insertion in model container [2020-11-30 00:11:19,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19" (3/3) ... [2020-11-30 00:11:19,897 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-11-30 00:11:19,909 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:19,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:19,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:19,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:19,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:19,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:19,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:19,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:19,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:19,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:19,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 00:11:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:11:19,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:19,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:19,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-30 00:11:19,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:19,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997119414] [2020-11-30 00:11:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 [2020-11-30 00:11:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:20,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:11:20,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:20,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:20,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997119414] [2020-11-30 00:11:20,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:20,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:11:20,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885017950] [2020-11-30 00:11:20,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:20,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:20,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:20,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:20,302 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-30 00:11:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:20,321 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-30 00:11:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:20,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:11:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:20,332 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:11:20,333 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:11:20,335 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 [2020-11-30 00:11:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:11:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:11:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:11:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-30 00:11:20,371 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-30 00:11:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:20,372 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 00:11:20,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-30 00:11:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:11:20,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:20,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:20,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:11:20,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:20,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-30 00:11:20,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:20,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062048301] [2020-11-30 00:11:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/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 [2020-11-30 00:11:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:20,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:21,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:21,207 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:11:21,207 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:11:21,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:11:21,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:21 BoogieIcfgContainer [2020-11-30 00:11:21,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:21,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:21,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:21,444 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:21,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19" (3/4) ... [2020-11-30 00:11:21,447 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:11:21,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2ce607a-ea4b-4eff-89cb-22bfff8b8566/bin/uautomizer/witness.graphml [2020-11-30 00:11:21,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:21,516 INFO L168 Benchmark]: Toolchain (without parser) took 2973.68 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.7 MB in the beginning and 34.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,517 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:21,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.52 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 50.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.65 ms. Allocated memory is still 67.1 MB. Free memory was 50.5 MB in the beginning and 48.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,519 INFO L168 Benchmark]: Boogie Preprocessor took 64.65 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 46.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,520 INFO L168 Benchmark]: RCFGBuilder took 723.94 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 41.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,521 INFO L168 Benchmark]: TraceAbstraction took 1553.27 ms. Allocated memory is still 67.1 MB. Free memory was 41.0 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,521 INFO L168 Benchmark]: Witness Printer took 70.35 ms. Allocated memory is still 67.1 MB. Free memory was 37.4 MB in the beginning and 34.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:21,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.52 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 50.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.65 ms. Allocated memory is still 67.1 MB. Free memory was 50.5 MB in the beginning and 48.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.65 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 46.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 723.94 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 41.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1553.27 ms. Allocated memory is still 67.1 MB. Free memory was 41.0 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 70.35 ms. Allocated memory is still 67.1 MB. Free memory was 37.4 MB in the beginning and 34.9 MB in the end (delta: 2.5 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: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=28occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...