./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0971.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_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0971.c -s /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 af619ca7e2648e42636a663f6d97c4f9b402f61d .................................................................................................................................................................................................................................................................................................................. 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_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0971.c -s /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 af619ca7e2648e42636a663f6d97c4f9b402f61d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:44:07,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:44:07,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:44:07,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:44:07,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:44:07,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:44:07,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:44:07,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:44:07,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:44:07,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:44:07,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:44:07,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:44:07,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:44:07,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:44:07,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:44:07,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:44:07,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:44:07,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:44:07,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:44:07,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:44:07,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:44:07,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:44:07,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:44:07,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:44:07,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:44:07,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:44:07,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:44:07,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:44:07,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:44:07,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:44:07,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:44:07,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:44:07,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:44:07,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:44:07,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:44:07,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:44:07,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:44:07,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:44:07,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:44:07,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:44:07,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:44:07,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:44:07,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:44:07,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:44:07,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:44:07,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:44:07,416 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:44:07,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:44:07,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:44:07,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:44:07,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:44:07,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:44:07,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:44:07,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:44:07,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:44:07,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:44:07,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:44:07,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:44:07,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:44:07,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:44:07,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:44:07,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:44:07,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:44:07,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:44:07,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:44:07,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:44:07,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:44:07,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:44:07,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:44:07,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:44:07,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:44:07,424 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_218cce5d-b179-4802-9340-12f69c0c6df4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af619ca7e2648e42636a663f6d97c4f9b402f61d [2020-11-30 00:44:07,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:44:07,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:44:07,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:44:07,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:44:07,809 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:44:07,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0971.c [2020-11-30 00:44:07,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/ec639f912/312bf4e673274c33a5c59018e294765e/FLAGd78f77375 [2020-11-30 00:44:08,560 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:44:08,561 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/sv-benchmarks/c/float-newlib/double_req_bl_0971.c [2020-11-30 00:44:08,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/ec639f912/312bf4e673274c33a5c59018e294765e/FLAGd78f77375 [2020-11-30 00:44:08,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/ec639f912/312bf4e673274c33a5c59018e294765e [2020-11-30 00:44:08,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:44:08,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:44:08,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:08,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:44:08,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:44:08,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:08" (1/1) ... [2020-11-30 00:44:08,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3920586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:08, skipping insertion in model container [2020-11-30 00:44:08,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:08" (1/1) ... [2020-11-30 00:44:08,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:44:08,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:44:09,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:09,280 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:44:09,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:09,356 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:44:09,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09 WrapperNode [2020-11-30 00:44:09,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:09,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:09,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:44:09,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:44:09,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:09,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:44:09,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:44:09,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:44:09,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... [2020-11-30 00:44:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:44:09,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:44:09,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:44:09,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:44:09,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 00:44:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:44:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:44:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:44:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:44:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:44:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:44:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:44:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:44:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:44:10,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:44:10,501 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-30 00:44:10,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:10 BoogieIcfgContainer [2020-11-30 00:44:10,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:44:10,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:44:10,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:44:10,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:44:10,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:44:08" (1/3) ... [2020-11-30 00:44:10,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0b45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:10, skipping insertion in model container [2020-11-30 00:44:10,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:09" (2/3) ... [2020-11-30 00:44:10,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0b45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:10, skipping insertion in model container [2020-11-30 00:44:10,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:10" (3/3) ... [2020-11-30 00:44:10,521 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0971.c [2020-11-30 00:44:10,535 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:44:10,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:44:10,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:44:10,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:44:10,587 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:44:10,587 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:44:10,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:44:10,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:44:10,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:44:10,588 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:44:10,588 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:44:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-30 00:44:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:44:10,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:10,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:10,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1032073611, now seen corresponding path program 1 times [2020-11-30 00:44:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:10,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683644188] [2020-11-30 00:44:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:10,859 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 00:44:10,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683644188] [2020-11-30 00:44:10,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:10,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:44:10,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697229059] [2020-11-30 00:44:10,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:44:10,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:10,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:44:10,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:44:10,921 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-30 00:44:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:10,954 INFO L93 Difference]: Finished difference Result 83 states and 137 transitions. [2020-11-30 00:44:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:44:10,956 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:44:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:10,978 INFO L225 Difference]: With dead ends: 83 [2020-11-30 00:44:10,980 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:44:10,984 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 00:44:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:44:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-30 00:44:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:44:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-30 00:44:11,027 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 10 [2020-11-30 00:44:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:11,028 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-30 00:44:11,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:44:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-30 00:44:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:44:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:11,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:11,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:44:11,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1303233586, now seen corresponding path program 1 times [2020-11-30 00:44:11,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:11,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007677355] [2020-11-30 00:44:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:11,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:11,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:11,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:44:11,189 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:44:11,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:44:11,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:44:11 BoogieIcfgContainer [2020-11-30 00:44:11,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:44:11,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:44:11,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:44:11,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:44:11,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:10" (3/4) ... [2020-11-30 00:44:11,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:44:11,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:44:11,274 INFO L168 Benchmark]: Toolchain (without parser) took 2342.88 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 67.6 MB in the beginning and 86.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:11,275 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 74.9 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:11,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.83 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 75.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:11,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.6 MB in the beginning and 73.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:11,279 INFO L168 Benchmark]: Boogie Preprocessor took 75.50 ms. Allocated memory is still 102.8 MB. Free memory was 73.0 MB in the beginning and 70.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:11,280 INFO L168 Benchmark]: RCFGBuilder took 982.34 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 43.1 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:11,282 INFO L168 Benchmark]: TraceAbstraction took 751.65 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 86.4 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:11,283 INFO L168 Benchmark]: Witness Printer took 6.02 ms. Allocated memory is still 123.7 MB. Free memory is still 86.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:11,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 74.9 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.83 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 75.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.6 MB in the beginning and 73.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.50 ms. Allocated memory is still 102.8 MB. Free memory was 73.0 MB in the beginning and 70.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 982.34 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 43.1 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 751.65 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 86.4 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.02 ms. Allocated memory is still 123.7 MB. Free memory is still 86.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 163, overapproximation of bitwiseOr at line 134, overapproximation of someBinaryArithmeticDOUBLEoperation at line 135. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L172] double x = 0.0 / 0.0; [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L133] COND TRUE hx < 0x00100000 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L134] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L135] return -two54_log10 / zero_log10; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L173] double res = __ieee754_log10(x); [L163] return x != x; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0971.c", 3, "reach_error") VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 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: 56 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=43occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 00:44:14,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:44:14,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:44:14,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:44:14,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:44:14,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:44:14,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:44:14,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:44:14,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:44:14,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:44:14,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:44:14,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:44:14,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:44:14,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:44:14,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:44:14,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:44:14,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:44:14,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:44:14,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:44:14,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:44:14,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:44:14,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:44:14,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:44:14,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:44:14,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:44:14,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:44:14,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:44:14,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:44:14,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:44:14,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:44:14,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:44:14,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:44:14,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:44:14,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:44:14,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:44:14,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:44:14,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:44:14,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:44:14,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:44:14,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:44:14,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:44:14,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:44:14,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:44:14,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:44:14,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:44:14,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:44:14,528 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:44:14,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:44:14,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:44:14,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:44:14,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:44:14,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:44:14,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:44:14,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:44:14,532 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:44:14,532 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:44:14,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:44:14,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:44:14,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:44:14,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:44:14,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:44:14,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:44:14,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:44:14,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:44:14,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:44:14,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:44:14,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:44:14,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:44:14,536 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:44:14,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:44:14,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:44:14,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:44:14,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:44:14,537 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_218cce5d-b179-4802-9340-12f69c0c6df4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af619ca7e2648e42636a663f6d97c4f9b402f61d [2020-11-30 00:44:14,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:44:15,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:44:15,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:44:15,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:44:15,031 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:44:15,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0971.c [2020-11-30 00:44:15,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/5ede0a639/4df2689d630542de931c327b066a8162/FLAGa92cf970c [2020-11-30 00:44:15,709 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:44:15,709 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/sv-benchmarks/c/float-newlib/double_req_bl_0971.c [2020-11-30 00:44:15,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/5ede0a639/4df2689d630542de931c327b066a8162/FLAGa92cf970c [2020-11-30 00:44:16,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/data/5ede0a639/4df2689d630542de931c327b066a8162 [2020-11-30 00:44:16,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:44:16,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:44:16,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:16,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:44:16,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:44:16,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22144034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16, skipping insertion in model container [2020-11-30 00:44:16,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:44:16,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:44:16,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:16,408 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:44:16,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:16,592 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:44:16,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16 WrapperNode [2020-11-30 00:44:16,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:16,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:16,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:44:16,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:44:16,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:16,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:44:16,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:44:16,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:44:16,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... [2020-11-30 00:44:16,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:44:16,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:44:16,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:44:16,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:44:16,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 00:44:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:44:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:44:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:44:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:44:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:44:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:44:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:44:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:44:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:44:51,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:44:51,640 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-30 00:44:51,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:51 BoogieIcfgContainer [2020-11-30 00:44:51,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:44:51,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:44:51,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:44:51,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:44:51,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:44:16" (1/3) ... [2020-11-30 00:44:51,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e9b34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:51, skipping insertion in model container [2020-11-30 00:44:51,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:16" (2/3) ... [2020-11-30 00:44:51,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e9b34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:51, skipping insertion in model container [2020-11-30 00:44:51,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:51" (3/3) ... [2020-11-30 00:44:51,654 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0971.c [2020-11-30 00:44:51,668 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:44:51,674 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:44:51,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:44:51,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:44:51,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:44:51,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:44:51,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:44:51,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:44:51,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:44:51,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:44:51,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:44:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-30 00:44:51,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:44:51,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:51,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:51,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:51,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1032073611, now seen corresponding path program 1 times [2020-11-30 00:44:51,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:44:51,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14233648] [2020-11-30 00:44:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 00:44:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:53,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:44:53,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:44:53,167 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 00:44:53,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:44:53,172 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 00:44:53,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14233648] [2020-11-30 00:44:53,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:53,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:44:53,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085935503] [2020-11-30 00:44:53,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:44:53,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:44:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:44:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:44:53,202 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-30 00:44:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:53,224 INFO L93 Difference]: Finished difference Result 83 states and 137 transitions. [2020-11-30 00:44:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:44:53,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:44:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:53,239 INFO L225 Difference]: With dead ends: 83 [2020-11-30 00:44:53,239 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:44:53,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 00:44:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:44:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-30 00:44:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:44:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-30 00:44:53,287 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 10 [2020-11-30 00:44:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:53,288 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-30 00:44:53,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:44:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-30 00:44:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:44:53,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:53,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:53,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:44:53,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1303233586, now seen corresponding path program 1 times [2020-11-30 00:44:53,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:44:53,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694846088] [2020-11-30 00:44:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 00:44:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:54,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:44:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:44:55,013 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 00:44:55,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:44:55,191 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 00:44:55,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694846088] [2020-11-30 00:44:55,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:55,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:44:55,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903403121] [2020-11-30 00:44:55,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:44:55,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:44:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:44:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:44:55,197 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 6 states. [2020-11-30 00:44:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:59,939 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-11-30 00:44:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:44:59,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:44:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:59,942 INFO L225 Difference]: With dead ends: 54 [2020-11-30 00:44:59,942 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:44:59,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:44:59,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:44:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-11-30 00:44:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:44:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2020-11-30 00:44:59,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 11 [2020-11-30 00:44:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:59,960 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2020-11-30 00:44:59,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:44:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2020-11-30 00:44:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:44:59,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:59,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:45:00,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:45:00,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:45:00,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:45:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash -593045937, now seen corresponding path program 1 times [2020-11-30 00:45:00,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:45:00,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646921444] [2020-11-30 00:45:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/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 00:45:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:45:00,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:45:00,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:45:00,637 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 00:45:00,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:45:01,873 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-30 00:45:01,888 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 00:45:01,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646921444] [2020-11-30 00:45:01,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:45:01,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:45:01,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557208672] [2020-11-30 00:45:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:45:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:45:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:45:01,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:45:01,892 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand 10 states. [2020-11-30 00:45:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:45:51,574 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-11-30 00:45:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:45:51,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 00:45:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:45:51,590 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:45:51,590 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:45:51,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:45:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:45:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-11-30 00:45:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:45:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-11-30 00:45:51,601 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 11 [2020-11-30 00:45:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:45:51,601 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-11-30 00:45:51,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:45:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-11-30 00:45:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:45:51,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:45:51,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:45:51,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:45:51,817 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:45:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:45:51,817 INFO L82 PathProgramCache]: Analyzing trace with hash -197853759, now seen corresponding path program 1 times [2020-11-30 00:45:51,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:45:51,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084234489] [2020-11-30 00:45:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:45:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:45:53,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:45:53,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:45:53,427 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 00:45:53,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:45:57,598 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 00:45:57,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084234489] [2020-11-30 00:45:57,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:45:57,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:45:57,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5152334] [2020-11-30 00:45:57,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:45:57,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:45:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:45:57,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=35, Unknown=2, NotChecked=0, Total=56 [2020-11-30 00:45:57,601 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 8 states. [2020-11-30 00:45:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:45:58,895 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-11-30 00:45:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:45:58,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-30 00:45:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:45:58,900 INFO L225 Difference]: With dead ends: 68 [2020-11-30 00:45:58,900 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:45:58,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=34, Invalid=54, Unknown=2, NotChecked=0, Total=90 [2020-11-30 00:45:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:45:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-30 00:45:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:45:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2020-11-30 00:45:58,927 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 20 [2020-11-30 00:45:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:45:58,928 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-11-30 00:45:58,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:45:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2020-11-30 00:45:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:45:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:45:58,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:45:59,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:45:59,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:45:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:45:59,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1415968622, now seen corresponding path program 1 times [2020-11-30 00:45:59,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:45:59,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741636664] [2020-11-30 00:45:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:46:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:00,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:46:00,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:01,164 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 00:46:01,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:46:01,309 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 00:46:01,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741636664] [2020-11-30 00:46:01,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:01,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:46:01,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243383188] [2020-11-30 00:46:01,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:46:01,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:46:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:46:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:46:01,312 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 8 states. [2020-11-30 00:46:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:01,503 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-11-30 00:46:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:46:01,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-30 00:46:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:46:01,506 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:46:01,506 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:46:01,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:46:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:46:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:46:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:46:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:46:01,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-11-30 00:46:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:46:01,508 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:01,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:46:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:46:01,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:46:01,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:46:01,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:46:01,921 INFO L270 CegarLoopResult]: At program point L159(lines 120 160) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log10_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log10_#res|)) [2020-11-30 00:46:01,921 INFO L274 CegarLoopResult]: For program point L52-1(lines 52 56) no Hoare annotation was computed. [2020-11-30 00:46:01,921 INFO L270 CegarLoopResult]: At program point L52-2(lines 52 56) the Hoare annotation is: false [2020-11-30 00:46:01,921 INFO L274 CegarLoopResult]: For program point L176(lines 176 179) no Hoare annotation was computed. [2020-11-30 00:46:01,921 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point L152-1(lines 152 157) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L270 CegarLoopResult]: At program point L152-2(lines 152 157) the Hoare annotation is: false [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point L152-3(lines 152 157) no Hoare annotation was computed. [2020-11-30 00:46:01,922 INFO L274 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L45-1(lines 32 111) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L136(lines 136 137) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 42) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L270 CegarLoopResult]: At program point L37-2(lines 37 42) the Hoare annotation is: false [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L37-3(lines 37 42) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L46(lines 46 47) no Hoare annotation was computed. [2020-11-30 00:46:01,923 INFO L274 CegarLoopResult]: For program point L71(lines 71 87) no Hoare annotation was computed. [2020-11-30 00:46:01,924 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 68) no Hoare annotation was computed. [2020-11-30 00:46:01,924 INFO L270 CegarLoopResult]: At program point L63-2(lines 63 68) the Hoare annotation is: false [2020-11-30 00:46:01,924 INFO L274 CegarLoopResult]: For program point L63-3(lines 63 68) no Hoare annotation was computed. [2020-11-30 00:46:01,924 INFO L274 CegarLoopResult]: For program point L72(lines 72 79) no Hoare annotation was computed. [2020-11-30 00:46:01,924 INFO L270 CegarLoopResult]: At program point L163(line 163) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log10_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log10_#res|) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-30 00:46:01,924 INFO L274 CegarLoopResult]: For program point L81(lines 81 86) no Hoare annotation was computed. [2020-11-30 00:46:01,924 INFO L274 CegarLoopResult]: For program point L48(lines 48 49) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point L106(lines 106 109) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point L73(lines 73 78) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point L98(lines 98 110) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:46:01,925 INFO L277 CegarLoopResult]: At program point L181(lines 165 182) the Hoare annotation is: true [2020-11-30 00:46:01,925 INFO L274 CegarLoopResult]: For program point L140-1(lines 140 144) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L270 CegarLoopResult]: At program point L140-2(lines 140 144) the Hoare annotation is: false [2020-11-30 00:46:01,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L274 CegarLoopResult]: For program point L133(lines 133 145) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L274 CegarLoopResult]: For program point L133-1(lines 120 160) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L274 CegarLoopResult]: For program point L100(lines 100 104) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L274 CegarLoopResult]: For program point L125-1(lines 125 130) no Hoare annotation was computed. [2020-11-30 00:46:01,926 INFO L270 CegarLoopResult]: At program point L125-2(lines 125 130) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log10_~x))) [2020-11-30 00:46:01,927 INFO L274 CegarLoopResult]: For program point L125-3(lines 125 130) no Hoare annotation was computed. [2020-11-30 00:46:01,929 INFO L270 CegarLoopResult]: At program point L109(lines 32 111) the Hoare annotation is: false [2020-11-30 00:46:01,929 INFO L274 CegarLoopResult]: For program point L134(lines 134 135) no Hoare annotation was computed. [2020-11-30 00:46:01,944 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,946 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,946 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,946 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,956 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,956 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,959 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,960 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:46:01,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,961 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,961 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:46:01,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,963 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,965 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,966 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,966 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,966 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:01,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:01,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:46:01 BoogieIcfgContainer [2020-11-30 00:46:01,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:46:01,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:46:01,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:46:01,971 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:46:01,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:51" (3/4) ... [2020-11-30 00:46:01,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:46:01,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 00:46:01,997 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 00:46:01,997 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:46:01,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:46:02,035 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 00:46:02,036 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-30 00:46:02,037 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result [2020-11-30 00:46:02,143 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_218cce5d-b179-4802-9340-12f69c0c6df4/bin/uautomizer/witness.graphml [2020-11-30 00:46:02,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:46:02,146 INFO L168 Benchmark]: Toolchain (without parser) took 106101.57 ms. Allocated memory is still 75.5 MB. Free memory was 60.2 MB in the beginning and 37.6 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,146 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:02,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.97 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 56.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.30 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 53.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,148 INFO L168 Benchmark]: Boogie Preprocessor took 97.00 ms. Allocated memory is still 75.5 MB. Free memory was 53.6 MB in the beginning and 51.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,149 INFO L168 Benchmark]: RCFGBuilder took 34842.72 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 45.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,149 INFO L168 Benchmark]: TraceAbstraction took 70324.45 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 43.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,150 INFO L168 Benchmark]: Witness Printer took 173.50 ms. Allocated memory is still 75.5 MB. Free memory was 43.9 MB in the beginning and 37.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:02,152 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 75.5 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 545.97 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 56.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.30 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 53.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.00 ms. Allocated memory is still 75.5 MB. Free memory was 53.6 MB in the beginning and 51.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 34842.72 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 45.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70324.45 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 43.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 173.50 ms. Allocated memory is still 75.5 MB. Free memory was 43.9 MB in the beginning and 37.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 120]: Loop Invariant [2020-11-30 00:46:02,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,170 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,173 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,174 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,174 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,174 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,175 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,175 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant [2020-11-30 00:46:02,176 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,177 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:46:02,177 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,177 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,178 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:46:02,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 163]: Loop Invariant [2020-11-30 00:46:02,182 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,182 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,182 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,182 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,184 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,185 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,185 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,189 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,189 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,190 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:46:02,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:46:02,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 70.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 56.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 163 SDslu, 383 SDs, 0 SdLazy, 129 SolverSat, 21 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 50.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 65 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 142 ConstructedInterpolants, 23 QuantifiedInterpolants, 10646 SizeOfPredicates, 31 NumberOfNonLiveVariables, 402 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...