./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/float_req_bl_1210.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ...................................................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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/float_req_bl_1210.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ............................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-19 21:13:44,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:13:44,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:13:44,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:13:44,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:13:44,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:13:44,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:13:44,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:13:44,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:13:44,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:13:44,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:13:44,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:13:44,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:13:44,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:13:44,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:13:44,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:13:44,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:13:44,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:13:44,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:13:44,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:13:44,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:13:44,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:13:44,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:13:44,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:13:44,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:13:44,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:13:44,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:13:44,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:13:44,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:13:44,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:13:44,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:13:44,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:13:44,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:13:44,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:13:44,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:13:44,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:13:44,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:13:44,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:13:44,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:13:44,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:13:44,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:13:44,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:13:44,677 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:13:44,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:13:44,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:13:44,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:13:44,681 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:13:44,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:13:44,681 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:13:44,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:13:44,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:13:44,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:13:44,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:13:44,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:13:44,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:13:44,685 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:13:44,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:13:44,685 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:13:44,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:13:44,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:13:44,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:13:44,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:13:44,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:13:44,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:44,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:13:44,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:13:44,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:13:44,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:13:44,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:13:44,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:13:44,689 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(__VERIFIER_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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2019-11-19 21:13:44,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:13:45,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:13:45,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:13:45,014 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:13:45,014 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:13:45,015 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-19 21:13:45,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e91de08/f1c9bd6876bb4665a3397c034c6d5ce4/FLAG01ae74945 [2019-11-19 21:13:45,578 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:13:45,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-19 21:13:45,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e91de08/f1c9bd6876bb4665a3397c034c6d5ce4/FLAG01ae74945 [2019-11-19 21:13:45,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e91de08/f1c9bd6876bb4665a3397c034c6d5ce4 [2019-11-19 21:13:45,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:13:45,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:13:45,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:45,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:13:45,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:13:45,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:45" (1/1) ... [2019-11-19 21:13:45,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f704fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:45, skipping insertion in model container [2019-11-19 21:13:45,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:45" (1/1) ... [2019-11-19 21:13:45,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:13:45,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:13:46,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:46,268 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:13:46,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:46,411 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:13:46,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46 WrapperNode [2019-11-19 21:13:46,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:46,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:46,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:13:46,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:13:46,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:46,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:13:46,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:13:46,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:13:46,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (1/1) ... [2019-11-19 21:13:46,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:13:46,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:13:46,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:13:46,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:13:46,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (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 [2019-11-19 21:13:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-19 21:13:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 21:13:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-19 21:13:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:13:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:13:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 21:13:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:13:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:13:47,088 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:13:47,089 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-19 21:13:47,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:47 BoogieIcfgContainer [2019-11-19 21:13:47,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:13:47,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:13:47,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:13:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:13:47,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:45" (1/3) ... [2019-11-19 21:13:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5000c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:47, skipping insertion in model container [2019-11-19 21:13:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:46" (2/3) ... [2019-11-19 21:13:47,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5000c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:47, skipping insertion in model container [2019-11-19 21:13:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:47" (3/3) ... [2019-11-19 21:13:47,103 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-19 21:13:47,114 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:13:47,122 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:13:47,134 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:13:47,158 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:13:47,159 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:13:47,159 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:13:47,159 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:13:47,159 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:13:47,159 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:13:47,160 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:13:47,160 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:13:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-19 21:13:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 21:13:47,181 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:47,182 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:47,183 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-19 21:13:47,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:47,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853741768] [2019-11-19 21:13:47,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:47,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853741768] [2019-11-19 21:13:47,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:47,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:13:47,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376434870] [2019-11-19 21:13:47,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:13:47,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:47,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:13:47,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:13:47,350 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-19 21:13:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:47,369 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-19 21:13:47,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:13:47,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-19 21:13:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:47,381 INFO L225 Difference]: With dead ends: 66 [2019-11-19 21:13:47,381 INFO L226 Difference]: Without dead ends: 31 [2019-11-19 21:13:47,385 INFO L630 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 [2019-11-19 21:13:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-19 21:13:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-19 21:13:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 21:13:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-19 21:13:47,419 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-19 21:13:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:47,419 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-19 21:13:47,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:13:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-19 21:13:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 21:13:47,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:47,421 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:47,421 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-19 21:13:47,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:47,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336415990] [2019-11-19 21:13:47,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:47,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336415990] [2019-11-19 21:13:47,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:47,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 21:13:47,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62668551] [2019-11-19 21:13:47,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 21:13:47,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 21:13:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:13:47,510 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-11-19 21:13:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:47,548 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-19 21:13:47,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 21:13:47,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-19 21:13:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:47,550 INFO L225 Difference]: With dead ends: 34 [2019-11-19 21:13:47,551 INFO L226 Difference]: Without dead ends: 31 [2019-11-19 21:13:47,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:13:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-19 21:13:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-19 21:13:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 21:13:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-11-19 21:13:47,559 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2019-11-19 21:13:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:47,559 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-11-19 21:13:47,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 21:13:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-11-19 21:13:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 21:13:47,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:47,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:47,561 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:47,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2019-11-19 21:13:47,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:47,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921163854] [2019-11-19 21:13:47,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:47,722 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:13:47,722 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:13:47,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:47 BoogieIcfgContainer [2019-11-19 21:13:47,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:13:47,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:13:47,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:13:47,759 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:13:47,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:47" (3/4) ... [2019-11-19 21:13:47,764 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 21:13:47,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:13:47,766 INFO L168 Benchmark]: Toolchain (without parser) took 1821.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -99.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:47,767 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:47,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:47,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:47,769 INFO L168 Benchmark]: Boogie Preprocessor took 54.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:47,770 INFO L168 Benchmark]: RCFGBuilder took 536.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:47,771 INFO L168 Benchmark]: TraceAbstraction took 665.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:47,771 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:47,776 INFO L335 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 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 468.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 536.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 665.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [one_modf=1] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L22] COND TRUE j0 < 23 VAL [one_modf=1] [L23] COND TRUE j0 < 0 VAL [one_modf=1] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [one_modf=1] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L73] return x != x; VAL [one_modf=1] [L85] isnan_float(iptr) && !isnan_float(res) [L73] return x != x; VAL [one_modf=1] [L85] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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, 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 0.1.24-678e011 [2019-11-19 21:13:49,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:13:49,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:13:49,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:13:49,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:13:49,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:13:49,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:13:49,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:13:49,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:13:49,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:13:49,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:13:49,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:13:49,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:13:49,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:13:49,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:13:49,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:13:49,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:13:49,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:13:49,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:13:49,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:13:49,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:13:49,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:13:49,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:13:49,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:13:49,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:13:49,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:13:49,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:13:49,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:13:49,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:13:49,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:13:49,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:13:49,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:13:49,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:13:49,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:13:49,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:13:49,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:13:49,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:13:49,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:13:49,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:13:49,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:13:49,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:13:49,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 21:13:49,900 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:13:49,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:13:49,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:13:49,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:13:49,902 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:13:49,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:13:49,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:13:49,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:13:49,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:13:49,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:13:49,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:13:49,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:13:49,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 21:13:49,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 21:13:49,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:13:49,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:13:49,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:13:49,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:13:49,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:13:49,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:13:49,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:13:49,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:13:49,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:49,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:13:49,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:13:49,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:13:49,908 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 21:13:49,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 21:13:49,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:13:49,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 21:13:49,908 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(__VERIFIER_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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2019-11-19 21:13:50,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:13:50,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:13:50,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:13:50,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:13:50,272 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:13:50,273 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-19 21:13:50,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f1c95086/53a1352073a7465f85a74bebd9921092/FLAGc7b8af67b [2019-11-19 21:13:50,831 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:13:50,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-19 21:13:50,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f1c95086/53a1352073a7465f85a74bebd9921092/FLAGc7b8af67b [2019-11-19 21:13:51,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f1c95086/53a1352073a7465f85a74bebd9921092 [2019-11-19 21:13:51,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:13:51,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:13:51,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:51,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:13:51,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:13:51,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41434439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51, skipping insertion in model container [2019-11-19 21:13:51,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,241 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:13:51,262 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:13:51,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:51,528 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:13:51,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:51,655 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:13:51,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51 WrapperNode [2019-11-19 21:13:51,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:51,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:51,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:13:51,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:13:51,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:51,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:13:51,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:13:51,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:13:51,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (1/1) ... [2019-11-19 21:13:51,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:13:51,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:13:51,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:13:51,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:13:51,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (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 [2019-11-19 21:13:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 21:13:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:13:51,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:13:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-19 21:13:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:13:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-19 21:13:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 21:13:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:13:52,406 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:13:52,406 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-19 21:13:52,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52 BoogieIcfgContainer [2019-11-19 21:13:52,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:13:52,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:13:52,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:13:52,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:13:52,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:51" (1/3) ... [2019-11-19 21:13:52,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4cb092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:52, skipping insertion in model container [2019-11-19 21:13:52,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:51" (2/3) ... [2019-11-19 21:13:52,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4cb092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:52, skipping insertion in model container [2019-11-19 21:13:52,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52" (3/3) ... [2019-11-19 21:13:52,415 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-19 21:13:52,424 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:13:52,431 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:13:52,440 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:13:52,459 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:13:52,459 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:13:52,459 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:13:52,460 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:13:52,460 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:13:52,460 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:13:52,460 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:13:52,460 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:13:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-19 21:13:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 21:13:52,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:52,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:52,483 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-19 21:13:52,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:13:52,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567199246] [2019-11-19 21:13:52,497 INFO L94 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 [2019-11-19 21:13:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:52,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-19 21:13:52,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:13:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:52,666 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:13:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:52,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567199246] [2019-11-19 21:13:52,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:52,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 21:13:52,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789888879] [2019-11-19 21:13:52,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:13:52,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:13:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:13:52,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:13:52,696 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-19 21:13:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:52,715 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-19 21:13:52,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:13:52,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-19 21:13:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:52,731 INFO L225 Difference]: With dead ends: 66 [2019-11-19 21:13:52,731 INFO L226 Difference]: Without dead ends: 31 [2019-11-19 21:13:52,735 INFO L630 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 [2019-11-19 21:13:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-19 21:13:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-19 21:13:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 21:13:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-19 21:13:52,776 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-19 21:13:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:52,776 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-19 21:13:52,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:13:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-19 21:13:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 21:13:52,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:52,778 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:52,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-19 21:13:52,998 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:52,999 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-19 21:13:53,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:13:53,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077366368] [2019-11-19 21:13:53,001 INFO L94 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 [2019-11-19 21:13:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:53,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 21:13:53,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:13:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:53,191 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:13:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:53,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077366368] [2019-11-19 21:13:53,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:53,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-19 21:13:53,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938189135] [2019-11-19 21:13:53,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 21:13:53,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:13:53,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 21:13:53,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 21:13:53,334 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2019-11-19 21:13:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:53,609 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-19 21:13:53,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:13:53,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-19 21:13:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:53,611 INFO L225 Difference]: With dead ends: 38 [2019-11-19 21:13:53,611 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 21:13:53,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-19 21:13:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 21:13:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-19 21:13:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 21:13:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-19 21:13:53,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-11-19 21:13:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:53,619 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-19 21:13:53,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 21:13:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-19 21:13:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 21:13:53,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:53,622 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:53,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-19 21:13:53,824 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:53,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2019-11-19 21:13:53,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:13:53,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792272429] [2019-11-19 21:13:53,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-19 21:13:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:53,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 21:13:53,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:13:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:53,993 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:13:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:53,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792272429] [2019-11-19 21:13:53,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:53,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-19 21:13:53,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000578145] [2019-11-19 21:13:53,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 21:13:53,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:13:53,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 21:13:53,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:13:53,997 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-11-19 21:13:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:54,014 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-19 21:13:54,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 21:13:54,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-19 21:13:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:54,015 INFO L225 Difference]: With dead ends: 21 [2019-11-19 21:13:54,016 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 21:13:54,016 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:13:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 21:13:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-19 21:13:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 21:13:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-11-19 21:13:54,021 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2019-11-19 21:13:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:54,022 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-11-19 21:13:54,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 21:13:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-11-19 21:13:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 21:13:54,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:54,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:54,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-19 21:13:54,224 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:54,225 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2019-11-19 21:13:54,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:13:54,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848378428] [2019-11-19 21:13:54,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-19 21:13:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:54,812 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 21:13:54,812 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:13:55,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-19 21:13:55,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:55 BoogieIcfgContainer [2019-11-19 21:13:55,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:13:55,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:13:55,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:13:55,054 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:13:55,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52" (3/4) ... [2019-11-19 21:13:55,058 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:13:55,128 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:13:55,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:13:55,132 INFO L168 Benchmark]: Toolchain (without parser) took 3909.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 961.7 MB in the beginning and 976.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 108.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:55,134 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:55,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:55,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:55,138 INFO L168 Benchmark]: Boogie Preprocessor took 47.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:55,139 INFO L168 Benchmark]: RCFGBuilder took 650.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:55,140 INFO L168 Benchmark]: TraceAbstraction took 2645.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.1 MB in the end (delta: 102.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:55,141 INFO L168 Benchmark]: Witness Printer took 74.56 ms. Allocated memory is still 1.2 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:55,145 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 433.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 650.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2645.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.1 MB in the end (delta: 102.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. * Witness Printer took 74.56 ms. Allocated memory is still 1.2 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [one_modf=1.0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] *iptr = x * one_modf VAL [one_modf=1.0] [L59] ieee_float_shape_type gf_u; [L60] gf_u.value = (x) [L61] EXPR gf_u.word [L61] (ix) = gf_u.word [L64] ieee_float_shape_type sf_u; [L65] sf_u.word = (ix & 0x80000000) [L66] EXPR sf_u.value [L66] (x) = sf_u.value [L68] return x; VAL [one_modf=1.0] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L73] return x != x; VAL [one_modf=1.0] [L85] isnan_float(iptr) && !isnan_float(res) [L73] return x != x; VAL [one_modf=1.0] [L85] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 2 QuantifiedInterpolants, 2434 SizeOfPredicates, 6 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...