./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ............................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 00:33:04,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:04,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:04,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:04,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:04,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:04,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:04,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:04,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:04,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:04,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:04,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:04,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:04,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:04,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:04,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:04,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:04,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:04,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:04,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:04,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:04,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:04,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:04,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:04,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:04,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:04,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:04,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:04,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:04,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:04,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:04,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:04,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:04,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:04,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:04,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:04,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:04,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:04,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:04,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:04,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:04,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:04,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:04,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:04,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:04,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:04,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:04,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:04,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:04,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:04,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:04,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:04,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:04,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:04,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:04,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:04,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:04,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:04,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:04,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:04,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:04,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:04,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:04,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:04,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:04,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:04,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-10-20 00:33:04,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:04,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:04,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:04,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:04,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:04,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-20 00:33:04,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ce71ab2/cbe1109d5b6d46d8a33bf9bf8dd44346/FLAG83a7dfa03 [2020-10-20 00:33:05,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:05,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-20 00:33:05,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ce71ab2/cbe1109d5b6d46d8a33bf9bf8dd44346/FLAG83a7dfa03 [2020-10-20 00:33:05,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ce71ab2/cbe1109d5b6d46d8a33bf9bf8dd44346 [2020-10-20 00:33:05,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:05,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:05,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:05,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:05,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:05,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a76cc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05, skipping insertion in model container [2020-10-20 00:33:05,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:05,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:05,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:06,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:06,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:06,076 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:06,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06 WrapperNode [2020-10-20 00:33:06,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:06,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:06,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:06,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:06,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:06,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:06,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:06,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:06,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:06,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:06,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:06,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:06,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:33:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:33:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:33:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:06,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:06,886 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:06,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06 BoogieIcfgContainer [2020-10-20 00:33:06,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:06,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:06,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:06,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:06,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:05" (1/3) ... [2020-10-20 00:33:06,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8fc976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:06, skipping insertion in model container [2020-10-20 00:33:06,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (2/3) ... [2020-10-20 00:33:06,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8fc976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:06, skipping insertion in model container [2020-10-20 00:33:06,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06" (3/3) ... [2020-10-20 00:33:06,895 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-10-20 00:33:06,907 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:06,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:06,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:06,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:06,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:06,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:06,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:06,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:06,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:06,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:06,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-20 00:33:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:06,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:06,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:06,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-20 00:33:06,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:06,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837812923] [2020-10-20 00:33:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:07,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837812923] [2020-10-20 00:33:07,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:07,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:07,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554206890] [2020-10-20 00:33:07,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:07,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:07,154 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-20 00:33:07,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:07,181 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-20 00:33:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:07,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:33:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:07,195 INFO L225 Difference]: With dead ends: 119 [2020-10-20 00:33:07,196 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:33:07,199 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 [2020-10-20 00:33:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:33:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 00:33:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 00:33:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-20 00:33:07,243 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-20 00:33:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:07,243 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-20 00:33:07,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-20 00:33:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:07,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:07,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:07,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:07,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:07,245 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-20 00:33:07,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:07,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087034049] [2020-10-20 00:33:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:07,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:07,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:07,555 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:07,556 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:07,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:07,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:07 BoogieIcfgContainer [2020-10-20 00:33:07,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:07,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:07,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:07,620 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:07,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06" (3/4) ... [2020-10-20 00:33:07,624 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:07,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:07,627 INFO L168 Benchmark]: Toolchain (without parser) took 1945.81 ms. Allocated memory was 42.5 MB in the beginning and 48.2 MB in the end (delta: 5.8 MB). Free memory was 22.5 MB in the beginning and 19.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,628 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.87 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 19.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.42 ms. Allocated memory is still 43.0 MB. Free memory was 19.2 MB in the beginning and 16.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,630 INFO L168 Benchmark]: Boogie Preprocessor took 50.75 ms. Allocated memory is still 43.0 MB. Free memory was 16.5 MB in the beginning and 14.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,632 INFO L168 Benchmark]: RCFGBuilder took 701.98 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 14.0 MB in the beginning and 15.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,632 INFO L168 Benchmark]: TraceAbstraction took 730.31 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 15.4 MB in the beginning and 19.4 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:07,633 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 48.2 MB. Free memory was 19.4 MB in the beginning and 19.0 MB in the end (delta: 373.8 kB). Peak memory consumption was 373.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,639 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 32.0 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 390.87 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 19.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 56.42 ms. Allocated memory is still 43.0 MB. Free memory was 19.2 MB in the beginning and 16.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 50.75 ms. Allocated memory is still 43.0 MB. Free memory was 16.5 MB in the beginning and 14.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 701.98 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 14.0 MB in the beginning and 15.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 730.31 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 15.4 MB in the beginning and 19.4 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 5.31 ms. Allocated memory is still 48.2 MB. Free memory was 19.4 MB in the beginning and 19.0 MB in the end (delta: 373.8 kB). Peak memory consumption was 373.8 kB. Max. memory is 14.3 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 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: 87 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=61occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:09,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:09,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:09,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:09,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:09,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:09,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:09,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:09,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:09,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:09,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:09,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:09,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:09,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:09,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:09,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:09,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:09,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:09,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:09,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:09,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:09,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:09,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:09,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:09,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:09,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:09,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:09,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:09,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:09,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:09,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:09,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:09,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:09,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:09,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:09,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:09,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:09,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:09,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:09,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:09,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:09,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:09,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:09,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:09,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:09,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:09,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:09,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:09,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:09,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:09,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:09,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:09,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:09,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:09,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:09,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:09,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:09,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:09,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:09,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:09,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:09,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:09,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:09,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:09,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:09,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:09,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:09,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:09,954 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:09,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:09,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:09,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:09,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:09,956 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-10-20 00:33:10,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:10,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:10,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:10,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:10,189 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:10,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-20 00:33:10,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d90f2084b/e33b77433e12470aa272b7375ee73243/FLAG8a6e183f5 [2020-10-20 00:33:10,773 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:10,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-20 00:33:10,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d90f2084b/e33b77433e12470aa272b7375ee73243/FLAG8a6e183f5 [2020-10-20 00:33:11,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d90f2084b/e33b77433e12470aa272b7375ee73243 [2020-10-20 00:33:11,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:11,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:11,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:11,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:11,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:11,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c8ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11, skipping insertion in model container [2020-10-20 00:33:11,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:11,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:11,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:11,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:11,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:11,645 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:11,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11 WrapperNode [2020-10-20 00:33:11,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:11,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:11,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:11,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:11,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:11,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:11,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:11,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:11,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:11,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:11,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:11,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:11,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:33:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:33:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:15,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:15,710 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:15,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15 BoogieIcfgContainer [2020-10-20 00:33:15,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:15,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:15,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:15,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:15,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:11" (1/3) ... [2020-10-20 00:33:15,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684cdcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:15, skipping insertion in model container [2020-10-20 00:33:15,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (2/3) ... [2020-10-20 00:33:15,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684cdcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:15, skipping insertion in model container [2020-10-20 00:33:15,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15" (3/3) ... [2020-10-20 00:33:15,722 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-10-20 00:33:15,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:15,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:15,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:15,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:15,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:15,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:15,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:15,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:15,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:15,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:15,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-20 00:33:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:15,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:15,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:15,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-20 00:33:15,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:15,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933373617] [2020-10-20 00:33:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:16,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:16,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:16,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:16,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933373617] [2020-10-20 00:33:16,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:16,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:16,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271509427] [2020-10-20 00:33:16,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:16,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:16,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:16,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:16,853 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-20 00:33:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:16,879 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-20 00:33:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:16,880 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:33:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:16,890 INFO L225 Difference]: With dead ends: 119 [2020-10-20 00:33:16,890 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:33:16,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:33:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 00:33:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 00:33:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-20 00:33:16,947 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-20 00:33:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:16,947 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-20 00:33:16,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-20 00:33:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:16,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:16,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:17,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:17,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:17,157 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-20 00:33:17,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:17,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773364472] [2020-10-20 00:33:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:18,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:20,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:20,383 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:33:20,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:20,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:33:20,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:20 BoogieIcfgContainer [2020-10-20 00:33:20,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:20,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:20,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:20,632 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:20,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15" (3/4) ... [2020-10-20 00:33:20,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:33:20,702 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:33:20,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:20,705 INFO L168 Benchmark]: Toolchain (without parser) took 9571.56 ms. Allocated memory was 39.3 MB in the beginning and 46.7 MB in the end (delta: 7.3 MB). Free memory was 19.2 MB in the beginning and 20.0 MB in the end (delta: -750.7 kB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,706 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.71 ms. Allocated memory was 39.3 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Free memory was 18.2 MB in the beginning and 12.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 41.4 MB. Free memory was 12.6 MB in the beginning and 25.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,708 INFO L168 Benchmark]: Boogie Preprocessor took 57.99 ms. Allocated memory is still 41.4 MB. Free memory was 25.2 MB in the beginning and 22.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,709 INFO L168 Benchmark]: RCFGBuilder took 3938.81 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 22.5 MB in the beginning and 18.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,709 INFO L168 Benchmark]: TraceAbstraction took 4917.50 ms. Allocated memory was 43.0 MB in the beginning and 46.7 MB in the end (delta: 3.7 MB). Free memory was 18.0 MB in the beginning and 23.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,710 INFO L168 Benchmark]: Witness Printer took 70.96 ms. Allocated memory is still 46.7 MB. Free memory was 23.4 MB in the beginning and 20.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 506.71 ms. Allocated memory was 39.3 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Free memory was 18.2 MB in the beginning and 12.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 68.41 ms. Allocated memory is still 41.4 MB. Free memory was 12.6 MB in the beginning and 25.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 57.99 ms. Allocated memory is still 41.4 MB. Free memory was 25.2 MB in the beginning and 22.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3938.81 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 22.5 MB in the beginning and 18.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4917.50 ms. Allocated memory was 43.0 MB in the beginning and 46.7 MB in the end (delta: 3.7 MB). Free memory was 18.0 MB in the beginning and 23.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Witness Printer took 70.96 ms. Allocated memory is still 46.7 MB. Free memory was 23.4 MB in the beginning and 20.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 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: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 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...