./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 875e041813cc52e2b4711be1a316a97bbafa7756 ...................................................................................................................................................................................................................................................................................................... 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_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 875e041813cc52e2b4711be1a316a97bbafa7756 ............................................................................................................................................................................................................................................................................................................................................................... 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 01:23:43,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:23:43,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:23:43,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:23:43,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:23:43,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:23:43,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:23:43,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:23:43,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:23:43,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:23:43,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:23:43,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:23:43,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:23:43,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:23:43,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:23:43,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:23:43,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:23:43,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:23:43,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:23:43,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:23:43,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:23:43,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:23:43,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:23:43,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:23:43,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:23:43,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:23:43,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:23:43,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:23:43,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:23:43,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:23:43,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:23:43,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:23:43,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:23:43,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:23:43,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:23:43,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:23:43,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:23:43,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:23:43,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:23:43,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:23:43,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:23:43,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:23:43,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:23:43,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:23:43,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:23:43,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:23:43,293 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:23:43,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:23:43,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:23:43,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:23:43,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:23:43,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:23:43,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:23:43,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:23:43,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:23:43,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:23:43,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:23:43,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:23:43,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:23:43,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:23:43,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:23:43,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:23:43,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:23:43,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:23:43,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:23:43,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:23:43,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:23:43,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:23:43,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:23:43,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:23:43,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:23:43,300 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_40dd5938-462c-4366-a9b5-b1f2b3874d25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-11-30 01:23:43,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:23:43,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:23:43,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:23:43,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:23:43,651 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:23:43,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-30 01:23:43,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/a4425583f/417f4f6078c74519b45a5610b7aee40a/FLAG1cfa04b43 [2020-11-30 01:23:44,366 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:23:44,367 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-30 01:23:44,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/a4425583f/417f4f6078c74519b45a5610b7aee40a/FLAG1cfa04b43 [2020-11-30 01:23:44,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/a4425583f/417f4f6078c74519b45a5610b7aee40a [2020-11-30 01:23:44,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:23:44,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:23:44,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:44,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:23:44,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:23:44,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:44" (1/1) ... [2020-11-30 01:23:44,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444bfce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:44, skipping insertion in model container [2020-11-30 01:23:44,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:44" (1/1) ... [2020-11-30 01:23:44,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:23:44,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:23:44,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:44,974 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:23:45,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:45,030 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:23:45,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45 WrapperNode [2020-11-30 01:23:45,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:45,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:45,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:23:45,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:23:45,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:45,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:23:45,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:23:45,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:23:45,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:23:45,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:23:45,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:23:45,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:23:45,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 01:23:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:23:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:23:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:23:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:23:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:23:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:23:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:23:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:23:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:23:45,764 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:23:45,765 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:23:45,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:45 BoogieIcfgContainer [2020-11-30 01:23:45,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:23:45,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:23:45,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:23:45,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:23:45,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:23:44" (1/3) ... [2020-11-30 01:23:45,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f79e893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:45, skipping insertion in model container [2020-11-30 01:23:45,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (2/3) ... [2020-11-30 01:23:45,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f79e893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:45, skipping insertion in model container [2020-11-30 01:23:45,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:45" (3/3) ... [2020-11-30 01:23:45,779 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-11-30 01:23:45,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:23:45,799 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:23:45,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:23:45,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:23:45,831 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:23:45,831 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:23:45,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:23:45,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:23:45,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:23:45,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:23:45,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:23:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:23:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:23:45,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:45,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:45,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-30 01:23:45,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:45,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968203191] [2020-11-30 01:23:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:46,084 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 01:23:46,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968203191] [2020-11-30 01:23:46,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:46,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:23:46,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284420534] [2020-11-30 01:23:46,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:23:46,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:23:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:23:46,113 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-30 01:23:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:46,136 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-30 01:23:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:23:46,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:23:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:46,157 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:23:46,157 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:23:46,160 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 01:23:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:23:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:23:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:23:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-30 01:23:46,199 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-30 01:23:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:46,200 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-30 01:23:46,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:23:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-30 01:23:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:23:46,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:46,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:46,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:23:46,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:46,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-30 01:23:46,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:46,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693927477] [2020-11-30 01:23:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:23:46,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:23:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:23:46,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:23:46,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:23:46,447 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:23:46,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:23:46,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:23:46 BoogieIcfgContainer [2020-11-30 01:23:46,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:23:46,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:23:46,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:23:46,478 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:23:46,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:45" (3/4) ... [2020-11-30 01:23:46,482 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:23:46,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:23:46,484 INFO L168 Benchmark]: Toolchain (without parser) took 1775.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 70.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:46,485 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:46,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.95 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 70.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:46,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 68.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:46,488 INFO L168 Benchmark]: Boogie Preprocessor took 32.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:46,489 INFO L168 Benchmark]: RCFGBuilder took 649.74 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 46.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:46,490 INFO L168 Benchmark]: TraceAbstraction took 709.08 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 46.3 MB in the beginning and 71.4 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:46,492 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 113.2 MB. Free memory was 71.4 MB in the beginning and 70.9 MB in the end (delta: 565.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:46,504 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 94.4 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.95 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 70.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 68.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 649.74 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 46.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 709.08 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 46.3 MB in the beginning and 71.4 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.40 ms. Allocated memory is still 113.2 MB. Free memory was 71.4 MB in the beginning and 70.9 MB in the end (delta: 565.4 kB). Peak memory consumption was 2.1 MB. 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 shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 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=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 01:23:49,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:23:49,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:23:49,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:23:49,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:23:49,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:23:49,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:23:49,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:23:49,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:23:49,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:23:49,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:23:49,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:23:49,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:23:49,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:23:49,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:23:49,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:23:49,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:23:49,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:23:49,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:23:49,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:23:49,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:23:49,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:23:49,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:23:49,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:23:49,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:23:49,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:23:49,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:23:49,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:23:49,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:23:49,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:23:49,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:23:49,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:23:49,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:23:49,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:23:49,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:23:49,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:23:49,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:23:49,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:23:49,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:23:49,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:23:49,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:23:49,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:23:49,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:23:49,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:23:49,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:23:49,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:23:49,241 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:23:49,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:23:49,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:23:49,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:23:49,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:23:49,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:23:49,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:23:49,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:23:49,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:23:49,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:23:49,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:23:49,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:23:49,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:23:49,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:23:49,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:23:49,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:23:49,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:23:49,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:23:49,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:23:49,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:23:49,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:23:49,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:23:49,248 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:23:49,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:23:49,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:23:49,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:23:49,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:23:49,249 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_40dd5938-462c-4366-a9b5-b1f2b3874d25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-11-30 01:23:49,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:23:49,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:23:49,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:23:49,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:23:49,756 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:23:49,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-30 01:23:49,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/11eb5a725/bf4264800f534424a3a96618bbe33a62/FLAG015705ab3 [2020-11-30 01:23:50,508 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:23:50,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-30 01:23:50,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/11eb5a725/bf4264800f534424a3a96618bbe33a62/FLAG015705ab3 [2020-11-30 01:23:50,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/data/11eb5a725/bf4264800f534424a3a96618bbe33a62 [2020-11-30 01:23:50,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:23:50,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:23:50,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:50,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:23:50,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:23:50,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:50" (1/1) ... [2020-11-30 01:23:50,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e28e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:50, skipping insertion in model container [2020-11-30 01:23:50,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:50" (1/1) ... [2020-11-30 01:23:50,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:23:50,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:23:51,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:51,105 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:23:51,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:51,219 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:23:51,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51 WrapperNode [2020-11-30 01:23:51,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:51,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:51,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:23:51,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:23:51,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:51,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:23:51,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:23:51,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:23:51,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... [2020-11-30 01:23:51,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:23:51,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:23:51,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:23:51,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:23:51,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 01:23:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 01:23:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 01:23:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:23:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:23:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:23:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:23:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:23:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:23:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:23:52,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:23:52,251 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:23:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:52 BoogieIcfgContainer [2020-11-30 01:23:52,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:23:52,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:23:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:23:52,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:23:52,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:23:50" (1/3) ... [2020-11-30 01:23:52,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386be49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:52, skipping insertion in model container [2020-11-30 01:23:52,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:51" (2/3) ... [2020-11-30 01:23:52,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386be49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:52, skipping insertion in model container [2020-11-30 01:23:52,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:52" (3/3) ... [2020-11-30 01:23:52,262 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-11-30 01:23:52,273 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:23:52,278 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:23:52,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:23:52,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:23:52,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:23:52,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:23:52,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:23:52,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:23:52,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:23:52,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:23:52,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:23:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:23:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:23:52,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:52,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:52,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-30 01:23:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:52,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739259192] [2020-11-30 01:23:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 01:23:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:52,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:23:52,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:23:52,526 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 01:23:52,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:23:52,532 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 01:23:52,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739259192] [2020-11-30 01:23:52,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:52,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:23:52,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105302017] [2020-11-30 01:23:52,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:23:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:23:52,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:23:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:23:52,556 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-30 01:23:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:52,579 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-30 01:23:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:23:52,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:23:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:52,591 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:23:52,592 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:23:52,594 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 01:23:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:23:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:23:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:23:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-30 01:23:52,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-30 01:23:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:52,637 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-30 01:23:52,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:23:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-30 01:23:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:23:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:52,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:52,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:23:52,854 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:52,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-30 01:23:52,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:52,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642015534] [2020-11-30 01:23:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/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 01:23:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:53,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:23:53,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:23:53,351 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 01:23:53,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:23:53,585 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 01:23:53,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642015534] [2020-11-30 01:23:53,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:53,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:23:53,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847622205] [2020-11-30 01:23:53,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:23:53,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:23:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:23:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:23:53,590 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-11-30 01:23:53,850 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 01:23:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:53,943 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-30 01:23:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:23:53,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 01:23:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:53,945 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:23:53,946 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:23:53,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:23:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:23:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:23:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:23:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-30 01:23:53,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-11-30 01:23:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:53,977 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-30 01:23:53,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:23:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-30 01:23:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:23:53,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:53,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:54,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:23:54,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-11-30 01:23:54,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:54,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843090823] [2020-11-30 01:23:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:23:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:23:54,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:23:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:23:54,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:23:54,731 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:23:54,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:23:54,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:23:54,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:23:54 BoogieIcfgContainer [2020-11-30 01:23:54,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:23:54,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:23:54,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:23:54,961 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:23:54,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:52" (3/4) ... [2020-11-30 01:23:54,964 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:23:55,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40dd5938-462c-4366-a9b5-b1f2b3874d25/bin/uautomizer/witness.graphml [2020-11-30 01:23:55,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:23:55,013 INFO L168 Benchmark]: Toolchain (without parser) took 4178.17 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.0 MB in the beginning and 50.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,013 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:55,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.26 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 41.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.23 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 39.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,016 INFO L168 Benchmark]: Boogie Preprocessor took 64.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 37.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,016 INFO L168 Benchmark]: RCFGBuilder took 854.35 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.5 MB in the beginning and 64.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,017 INFO L168 Benchmark]: TraceAbstraction took 2705.47 ms. Allocated memory is still 88.1 MB. Free memory was 63.6 MB in the beginning and 52.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,018 INFO L168 Benchmark]: Witness Printer took 50.44 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 50.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:55,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.26 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 41.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.23 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 39.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 37.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 854.35 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.5 MB in the beginning and 64.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2705.47 ms. Allocated memory is still 88.1 MB. Free memory was 63.6 MB in the beginning and 52.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.44 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 50.1 MB in the end (delta: 2.1 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: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...