./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.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_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 8c9e4c7f8995223bc7932e148ca032e092f66eb9 ........................................................................................................................................................................................................................................................................................................... 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_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 8c9e4c7f8995223bc7932e148ca032e092f66eb9 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:43:35,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:35,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:35,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:35,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:35,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:35,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:35,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:35,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:35,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:35,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:35,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:35,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:35,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:35,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:35,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:35,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:35,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:35,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:35,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:35,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:35,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:35,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:35,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:35,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:35,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:35,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:35,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:35,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:35,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:35,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:35,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:35,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:35,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:35,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:35,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:35,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:35,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:35,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:35,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:35,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:35,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:43:35,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:35,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:35,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:35,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:35,636 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:35,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:35,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:35,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:43:35,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:35,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:35,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:35,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:35,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:35,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:35,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:35,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:35,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:35,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:35,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:35,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:35,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:35,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:35,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:35,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:35,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:35,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:43:35,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:43:35,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:35,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:35,643 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_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-11-30 00:43:35,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:35,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:35,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:36,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:36,001 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:36,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 00:43:36,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/78416e200/572a77ea4b1c460d8ce987e0a052be31/FLAG5b6db262e [2020-11-30 00:43:36,738 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:36,739 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 00:43:36,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/78416e200/572a77ea4b1c460d8ce987e0a052be31/FLAG5b6db262e [2020-11-30 00:43:37,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/78416e200/572a77ea4b1c460d8ce987e0a052be31 [2020-11-30 00:43:37,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:37,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:37,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:37,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:37,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:37,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec483d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37, skipping insertion in model container [2020-11-30 00:43:37,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:37,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:37,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:37,399 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:37,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:37,458 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:37,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37 WrapperNode [2020-11-30 00:43:37,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:37,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:37,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:37,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:37,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:37,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:37,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:37,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:37,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... [2020-11-30 00:43:37,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:37,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:37,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:37,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:37,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 00:43:37,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:43:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:43:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:43:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:43:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:43:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:43:38,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:38,405 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:43:38,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:38 BoogieIcfgContainer [2020-11-30 00:43:38,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:38,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:38,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:38,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:38,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:37" (1/3) ... [2020-11-30 00:43:38,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:38, skipping insertion in model container [2020-11-30 00:43:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:37" (2/3) ... [2020-11-30 00:43:38,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:38, skipping insertion in model container [2020-11-30 00:43:38,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:38" (3/3) ... [2020-11-30 00:43:38,415 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-11-30 00:43:38,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:38,430 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:43:38,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:43:38,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:38,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:38,467 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:38,467 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:38,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:38,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:38,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:38,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:38,481 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-11-30 00:43:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:43:38,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:38,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:38,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-11-30 00:43:38,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:38,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157253492] [2020-11-30 00:43:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:38,699 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 00:43:38,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157253492] [2020-11-30 00:43:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:38,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546822916] [2020-11-30 00:43:38,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:38,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:38,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:38,729 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-11-30 00:43:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:38,761 INFO L93 Difference]: Finished difference Result 103 states and 163 transitions. [2020-11-30 00:43:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:38,763 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:43:38,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:38,773 INFO L225 Difference]: With dead ends: 103 [2020-11-30 00:43:38,773 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:43:38,776 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 00:43:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:43:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 00:43:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 00:43:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-11-30 00:43:38,811 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-11-30 00:43:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:38,812 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-11-30 00:43:38,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-11-30 00:43:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:43:38,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:38,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:38,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:43:38,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-11-30 00:43:38,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:38,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459233647] [2020-11-30 00:43:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:38,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:39,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:39,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:43:39,089 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:43:39,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:43:39,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:39 BoogieIcfgContainer [2020-11-30 00:43:39,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:39,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:39,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:39,139 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:39,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:38" (3/4) ... [2020-11-30 00:43:39,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:43:39,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:39,145 INFO L168 Benchmark]: Toolchain (without parser) took 2039.89 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 64.0 MB in the beginning and 77.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:39,146 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 92.3 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:39,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 63.7 MB in the beginning and 93.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:39,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 90.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:39,148 INFO L168 Benchmark]: Boogie Preprocessor took 39.13 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:39,149 INFO L168 Benchmark]: RCFGBuilder took 855.52 ms. Allocated memory is still 119.5 MB. Free memory was 88.6 MB in the beginning and 60.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:39,149 INFO L168 Benchmark]: TraceAbstraction took 729.12 ms. Allocated memory is still 119.5 MB. Free memory was 60.1 MB in the beginning and 77.9 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:39,150 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 119.5 MB. Free memory was 77.9 MB in the beginning and 77.2 MB in the end (delta: 712.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:39,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 92.3 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 63.7 MB in the beginning and 93.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 90.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.13 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 855.52 ms. Allocated memory is still 119.5 MB. Free memory was 88.6 MB in the beginning and 60.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 729.12 ms. Allocated memory is still 119.5 MB. Free memory was 60.1 MB in the beginning and 77.9 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.63 ms. Allocated memory is still 119.5 MB. Free memory was 77.9 MB in the beginning and 77.2 MB in the end (delta: 712.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L161] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 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: 71 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=53occurred 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, 22 NumberOfCodeBlocks, 22 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 00:43:41,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:41,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:41,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:41,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:41,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:41,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:41,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:41,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:41,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:41,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:41,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:41,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:41,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:41,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:41,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:41,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:41,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:41,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:41,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:41,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:41,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:41,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:41,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:41,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:41,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:41,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:41,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:41,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:41,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:41,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:41,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:41,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:41,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:41,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:41,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:41,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:41,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:41,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:41,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:41,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:41,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:43:41,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:41,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:41,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:41,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:41,870 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:41,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:41,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:41,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:41,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:41,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:41,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:41,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:41,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:43:41,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:43:41,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:41,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:41,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:41,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:41,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:41,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:41,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:41,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:41,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:41,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:41,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:41,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:41,877 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:43:41,877 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:43:41,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:41,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:41,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:43:41,878 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_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-11-30 00:43:42,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:42,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:42,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:42,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:42,368 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:42,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 00:43:42,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/6f5fd0ad0/1542cabae3a343a3b75ea6507d37ffce/FLAG1416fc890 [2020-11-30 00:43:43,011 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:43,011 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-11-30 00:43:43,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/6f5fd0ad0/1542cabae3a343a3b75ea6507d37ffce/FLAG1416fc890 [2020-11-30 00:43:43,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/data/6f5fd0ad0/1542cabae3a343a3b75ea6507d37ffce [2020-11-30 00:43:43,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:43,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:43,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:43,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:43,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:43,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cda7e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43, skipping insertion in model container [2020-11-30 00:43:43,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:43,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:43,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:43,627 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:43,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:43,781 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:43,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43 WrapperNode [2020-11-30 00:43:43,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:43,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:43,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:43,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:43,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:43,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:43,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:43,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:43,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:43,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:43,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:43,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:43,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 00:43:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:43:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:43:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:43:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:43:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:43:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:43:48,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:48,021 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:43:48,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:48 BoogieIcfgContainer [2020-11-30 00:43:48,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:48,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:48,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:48,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:43" (1/3) ... [2020-11-30 00:43:48,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ce0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:48, skipping insertion in model container [2020-11-30 00:43:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (2/3) ... [2020-11-30 00:43:48,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ce0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:48, skipping insertion in model container [2020-11-30 00:43:48,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:48" (3/3) ... [2020-11-30 00:43:48,033 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-11-30 00:43:48,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:48,050 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:43:48,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:43:48,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:48,091 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:48,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:48,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:48,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:48,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:48,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:48,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-11-30 00:43:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:43:48,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:48,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:48,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:48,121 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-11-30 00:43:48,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:43:48,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239122061] [2020-11-30 00:43:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 00:43:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:48,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:43:48,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:48,774 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 00:43:48,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:43:48,779 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 00:43:48,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239122061] [2020-11-30 00:43:48,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:48,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:43:48,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248662357] [2020-11-30 00:43:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:48,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:43:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:48,803 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-11-30 00:43:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:48,825 INFO L93 Difference]: Finished difference Result 103 states and 163 transitions. [2020-11-30 00:43:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:48,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:43:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:48,856 INFO L225 Difference]: With dead ends: 103 [2020-11-30 00:43:48,857 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:43:48,860 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 00:43:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:43:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 00:43:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 00:43:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-11-30 00:43:48,897 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-11-30 00:43:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:48,898 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-11-30 00:43:48,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-11-30 00:43:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:43:48,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:48,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:49,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:43:49,113 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-11-30 00:43:49,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:43:49,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822819095] [2020-11-30 00:43:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/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 00:43:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:49,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:50,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:50,307 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:43:50,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:43:50,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:43:50,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:50 BoogieIcfgContainer [2020-11-30 00:43:50,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:50,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:50,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:50,552 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:50,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:48" (3/4) ... [2020-11-30 00:43:50,555 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:43:50,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69f3aab0-d6c0-4d3e-aaa7-799c8349ee5e/bin/uautomizer/witness.graphml [2020-11-30 00:43:50,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:50,633 INFO L168 Benchmark]: Toolchain (without parser) took 7277.67 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 33.8 MB in the beginning and 61.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,634 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:50,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.6 MB in the beginning and 49.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.81 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:50,645 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 45.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,645 INFO L168 Benchmark]: RCFGBuilder took 4088.75 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 49.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,645 INFO L168 Benchmark]: TraceAbstraction took 2526.14 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 27.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,646 INFO L168 Benchmark]: Witness Printer took 78.46 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 27.8 MB in the beginning and 61.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:50,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.6 MB in the beginning and 49.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.81 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 45.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4088.75 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 49.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2526.14 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 27.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 78.46 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 27.8 MB in the beginning and 61.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L161] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 1.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...