./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ............................................................................................................................................................................................................................................................................................................... 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_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ........................................................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 15:05:01,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:05:01,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:05:01,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:05:01,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:05:01,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:05:01,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:05:01,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:05:01,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:05:01,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:05:01,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:05:01,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:05:01,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:05:01,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:05:01,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:05:01,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:05:01,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:05:01,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:05:01,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:05:01,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:05:01,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:05:01,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:05:01,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:05:01,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:05:01,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:05:01,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:05:01,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:05:01,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:05:01,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:05:01,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:05:01,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:05:01,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:05:01,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:05:01,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:05:01,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:05:01,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:05:01,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:05:01,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:05:01,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:05:01,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:05:01,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:05:01,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:05:01,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:05:01,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:05:01,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:05:01,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:05:01,713 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:05:01,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:05:01,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:05:01,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:05:01,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:05:01,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:05:01,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:05:01,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:05:01,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:05:01,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:05:01,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:05:01,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:05:01,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:05:01,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:05:01,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:05:01,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:05:01,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:05:01,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:05:01,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:05:01,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:05:01,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:05:01,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:05:01,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:05:01,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:05:01,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:05:01,721 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_d8f002a9-f7fe-437d-934b-7e361fe88b11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-01 15:05:02,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:05:02,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:05:02,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:05:02,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:05:02,071 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:05:02,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 15:05:02,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/31553bd8c/43815ea5c24d4dcfb5e59841f28f0e62/FLAG46a90ebc6 [2020-12-01 15:05:02,656 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:05:02,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 15:05:02,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/31553bd8c/43815ea5c24d4dcfb5e59841f28f0e62/FLAG46a90ebc6 [2020-12-01 15:05:03,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/31553bd8c/43815ea5c24d4dcfb5e59841f28f0e62 [2020-12-01 15:05:03,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:05:03,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:05:03,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:05:03,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:05:03,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:05:03,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c13be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03, skipping insertion in model container [2020-12-01 15:05:03,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:05:03,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:05:03,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:05:03,304 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:05:03,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:05:03,417 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:05:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03 WrapperNode [2020-12-01 15:05:03,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:05:03,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:05:03,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:05:03,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:05:03,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:05:03,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:05:03,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:05:03,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:05:03,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... [2020-12-01 15:05:03,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:05:03,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:05:03,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:05:03,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:05:03,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 [2020-12-01 15:05:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:05:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:05:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:05:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 15:05:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 15:05:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:05:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:05:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:05:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-01 15:05:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:05:04,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:05:04,293 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-01 15:05:04,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:04 BoogieIcfgContainer [2020-12-01 15:05:04,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:05:04,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:05:04,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:05:04,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:05:04,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:05:03" (1/3) ... [2020-12-01 15:05:04,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c6165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:05:04, skipping insertion in model container [2020-12-01 15:05:04,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:03" (2/3) ... [2020-12-01 15:05:04,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c6165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:05:04, skipping insertion in model container [2020-12-01 15:05:04,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:04" (3/3) ... [2020-12-01 15:05:04,306 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-01 15:05:04,320 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:05:04,323 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:05:04,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:05:04,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:05:04,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:05:04,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:05:04,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:05:04,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:05:04,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:05:04,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:05:04,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:05:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-12-01 15:05:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:05:04,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:05:04,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:05:04,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:05:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:05:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-12-01 15:05:04,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:05:04,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845885812] [2020-12-01 15:05:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:05:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:05:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:05:04,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845885812] [2020-12-01 15:05:04,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:05:04,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:05:04,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629202453] [2020-12-01 15:05:04,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:05:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:05:04,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:05:04,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:05:04,539 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-12-01 15:05:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:05:04,560 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-12-01 15:05:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:05:04,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 15:05:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:05:04,570 INFO L225 Difference]: With dead ends: 120 [2020-12-01 15:05:04,570 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:05:04,573 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 [2020-12-01 15:05:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:05:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-01 15:05:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-01 15:05:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-12-01 15:05:04,607 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-12-01 15:05:04,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:05:04,608 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-12-01 15:05:04,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:05:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-12-01 15:05:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:05:04,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:05:04,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:05:04,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:05:04,609 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:05:04,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:05:04,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-12-01 15:05:04,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:05:04,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411630210] [2020-12-01 15:05:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:05:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:05:04,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:05:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:05:04,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:05:04,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:05:04,819 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:05:04,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:05:04,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:05:04 BoogieIcfgContainer [2020-12-01 15:05:04,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:05:04,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:05:04,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:05:04,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:05:04,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:04" (3/4) ... [2020-12-01 15:05:04,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:05:04,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:05:04,858 INFO L168 Benchmark]: Toolchain (without parser) took 1848.32 ms. Allocated memory is still 92.3 MB. Free memory was 52.3 MB in the beginning and 65.3 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:05:04,859 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 58.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:05:04,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.24 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 64.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:04,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.94 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 61.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:04,861 INFO L168 Benchmark]: Boogie Preprocessor took 73.54 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:04,862 INFO L168 Benchmark]: RCFGBuilder took 727.76 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 58.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:04,862 INFO L168 Benchmark]: TraceAbstraction took 555.84 ms. Allocated memory is still 92.3 MB. Free memory was 58.2 MB in the beginning and 65.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:04,863 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 92.3 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:05:04,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 58.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.24 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 64.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.94 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 61.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.54 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 727.76 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 58.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 555.84 ms. Allocated memory is still 92.3 MB. Free memory was 58.2 MB in the beginning and 65.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.06 ms. Allocated memory is still 92.3 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 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=62occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 0.2.0-69874e2 [2020-12-01 15:05:07,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:05:07,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:05:07,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:05:07,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:05:07,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:05:07,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:05:07,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:05:07,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:05:07,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:05:07,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:05:07,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:05:07,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:05:07,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:05:07,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:05:07,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:05:07,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:05:07,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:05:07,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:05:07,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:05:07,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:05:07,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:05:07,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:05:07,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:05:07,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:05:07,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:05:07,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:05:07,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:05:07,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:05:07,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:05:07,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:05:07,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:05:07,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:05:07,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:05:07,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:05:07,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:05:07,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:05:07,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:05:07,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:05:07,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:05:07,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:05:07,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:05:07,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:05:07,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:05:07,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:05:07,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:05:07,532 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:05:07,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:05:07,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:05:07,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:05:07,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:05:07,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:05:07,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:05:07,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:05:07,535 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:05:07,535 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:05:07,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:05:07,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:05:07,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:05:07,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:05:07,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:05:07,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:05:07,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:05:07,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:05:07,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:05:07,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:05:07,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:05:07,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:05:07,538 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:05:07,538 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:05:07,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:05:07,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:05:07,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:05:07,539 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_d8f002a9-f7fe-437d-934b-7e361fe88b11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-01 15:05:07,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:05:07,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:05:07,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:05:07,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:05:07,987 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:05:07,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 15:05:08,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/0a8b217e2/a21f3fd98b724574846db3db8a324944/FLAG239732b65 [2020-12-01 15:05:08,693 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:05:08,693 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 15:05:08,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/0a8b217e2/a21f3fd98b724574846db3db8a324944/FLAG239732b65 [2020-12-01 15:05:09,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/data/0a8b217e2/a21f3fd98b724574846db3db8a324944 [2020-12-01 15:05:09,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:05:09,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:05:09,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:05:09,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:05:09,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:05:09,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393d8ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09, skipping insertion in model container [2020-12-01 15:05:09,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:05:09,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:05:09,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:05:09,378 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:05:09,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:05:09,498 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:05:09,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09 WrapperNode [2020-12-01 15:05:09,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:05:09,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:05:09,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:05:09,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:05:09,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:05:09,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:05:09,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:05:09,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:05:09,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... [2020-12-01 15:05:09,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:05:09,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:05:09,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:05:09,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:05:09,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 [2020-12-01 15:05:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 15:05:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 15:05:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:05:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:05:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-01 15:05:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:05:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:05:09,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:05:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 15:05:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:05:14,755 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:05:14,755 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-01 15:05:14,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:14 BoogieIcfgContainer [2020-12-01 15:05:14,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:05:14,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:05:14,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:05:14,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:05:14,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:05:09" (1/3) ... [2020-12-01 15:05:14,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ed013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:05:14, skipping insertion in model container [2020-12-01 15:05:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:05:09" (2/3) ... [2020-12-01 15:05:14,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ed013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:05:14, skipping insertion in model container [2020-12-01 15:05:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:14" (3/3) ... [2020-12-01 15:05:14,767 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-01 15:05:14,783 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:05:14,787 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:05:14,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:05:14,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:05:14,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:05:14,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:05:14,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:05:14,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:05:14,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:05:14,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:05:14,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:05:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-12-01 15:05:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:05:14,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:05:14,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:05:14,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:05:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:05:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-12-01 15:05:14,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:05:14,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421750032] [2020-12-01 15:05:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 [2020-12-01 15:05:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:05:15,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:05:15,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:05:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:05:15,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:05:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:05:16,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421750032] [2020-12-01 15:05:16,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:05:16,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:05:16,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033982179] [2020-12-01 15:05:16,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:05:16,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:05:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:05:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:05:16,034 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-12-01 15:05:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:05:16,054 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-12-01 15:05:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:05:16,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 15:05:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:05:16,066 INFO L225 Difference]: With dead ends: 120 [2020-12-01 15:05:16,066 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:05:16,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:05:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:05:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-01 15:05:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-01 15:05:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-12-01 15:05:16,106 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-12-01 15:05:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:05:16,106 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-12-01 15:05:16,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:05:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-12-01 15:05:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:05:16,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:05:16,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:05:16,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:05:16,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:05:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:05:16,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-12-01 15:05:16,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:05:16,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764608696] [2020-12-01 15:05:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/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 [2020-12-01 15:05:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:05:17,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:05:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:05:19,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:05:19,183 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:05:19,183 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:05:19,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:05:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:05:19 BoogieIcfgContainer [2020-12-01 15:05:19,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:05:19,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:05:19,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:05:19,432 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:05:19,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:05:14" (3/4) ... [2020-12-01 15:05:19,435 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:05:19,505 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d8f002a9-f7fe-437d-934b-7e361fe88b11/bin/uautomizer/witness.graphml [2020-12-01 15:05:19,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:05:19,508 INFO L168 Benchmark]: Toolchain (without parser) took 10432.19 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 44.1 MB in the beginning and 74.0 MB in the end (delta: -29.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,508 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:05:19,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.86 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 29.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.50 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 27.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,510 INFO L168 Benchmark]: Boogie Preprocessor took 89.64 ms. Allocated memory is still 62.9 MB. Free memory was 27.2 MB in the beginning and 45.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,511 INFO L168 Benchmark]: RCFGBuilder took 5109.59 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 45.6 MB in the beginning and 62.2 MB in the end (delta: -16.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,512 INFO L168 Benchmark]: TraceAbstraction took 4671.54 ms. Allocated memory is still 94.4 MB. Free memory was 61.8 MB in the beginning and 44.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,513 INFO L168 Benchmark]: Witness Printer took 74.10 ms. Allocated memory is still 94.4 MB. Free memory was 44.8 MB in the beginning and 74.0 MB in the end (delta: -29.2 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:05:19,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.86 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 29.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.50 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 27.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.64 ms. Allocated memory is still 62.9 MB. Free memory was 27.2 MB in the beginning and 45.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5109.59 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 45.6 MB in the beginning and 62.2 MB in the end (delta: -16.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4671.54 ms. Allocated memory is still 94.4 MB. Free memory was 61.8 MB in the beginning and 44.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Witness Printer took 74.10 ms. Allocated memory is still 94.4 MB. Free memory was 44.8 MB in the beginning and 74.0 MB in the end (delta: -29.2 MB). Peak memory consumption was 2.3 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 2.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 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...