./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 f470102c 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 0.1.25-f470102 [2019-11-28 16:55:06,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:06,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:06,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:06,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:06,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:06,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:06,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:06,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:06,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:06,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:06,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:06,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:06,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:06,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:06,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:06,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:06,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:06,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:06,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:06,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:06,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:06,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:06,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:06,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:06,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:06,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:06,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:06,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:06,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:06,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:06,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:06,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:06,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:06,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:06,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:06,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:06,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:06,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:06,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:06,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:06,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:55:06,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:06,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:06,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:06,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:06,849 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:06,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:06,850 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:06,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:55:06,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:06,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:06,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:06,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:06,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:06,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:06,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:06,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:06,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:06,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:06,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:06,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:06,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:06,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:06,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:06,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:06,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:06,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:55:06,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:55:06,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:06,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:06,856 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 [2019-11-28 16:55:07,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:07,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:07,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:07,191 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:07,191 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:07,192 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-28 16:55:07,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898b21e6c/18a75ba280fd4741abee8608cef49451/FLAGade8c775c [2019-11-28 16:55:07,693 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:07,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-28 16:55:07,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898b21e6c/18a75ba280fd4741abee8608cef49451/FLAGade8c775c [2019-11-28 16:55:08,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898b21e6c/18a75ba280fd4741abee8608cef49451 [2019-11-28 16:55:08,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:08,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:08,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:08,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:08,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:08,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165bf713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08, skipping insertion in model container [2019-11-28 16:55:08,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:08,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:08,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:08,374 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:08,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:08,478 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:08,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08 WrapperNode [2019-11-28 16:55:08,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:08,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:08,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:08,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:08,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:08,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:08,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:08,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:08,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (1/1) ... [2019-11-28 16:55:08,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:08,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:08,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:08,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:08,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (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 [2019-11-28 16:55:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:55:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:55:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:55:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:08,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:55:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:09,105 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:09,105 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 16:55:09,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:09 BoogieIcfgContainer [2019-11-28 16:55:09,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:09,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:09,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:09,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:08" (1/3) ... [2019-11-28 16:55:09,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a7f855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:09, skipping insertion in model container [2019-11-28 16:55:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:08" (2/3) ... [2019-11-28 16:55:09,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a7f855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:09, skipping insertion in model container [2019-11-28 16:55:09,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:09" (3/3) ... [2019-11-28 16:55:09,116 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-28 16:55:09,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:09,135 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:09,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:09,170 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:09,170 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:09,171 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:09,171 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:09,171 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:09,171 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:09,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:09,171 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 16:55:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:55:09,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:09,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:09,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:09,196 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-28 16:55:09,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:09,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110527840] [2019-11-28 16:55:09,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:09,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110527840] [2019-11-28 16:55:09,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:09,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:55:09,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220182249] [2019-11-28 16:55:09,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:09,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:09,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:09,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:09,352 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-28 16:55:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:09,377 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-28 16:55:09,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:09,379 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:55:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:09,393 INFO L225 Difference]: With dead ends: 66 [2019-11-28 16:55:09,393 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 16:55:09,397 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 [2019-11-28 16:55:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 16:55:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-28 16:55:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-28 16:55:09,435 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-28 16:55:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:09,435 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-28 16:55:09,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-28 16:55:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:55:09,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:09,437 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:09,437 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:09,438 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-28 16:55:09,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:09,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919884102] [2019-11-28 16:55:09,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:09,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919884102] [2019-11-28 16:55:09,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:09,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:55:09,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606028419] [2019-11-28 16:55:09,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:55:09,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:09,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:55:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:55:09,567 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-11-28 16:55:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:09,586 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-28 16:55:09,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:55:09,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-28 16:55:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:09,588 INFO L225 Difference]: With dead ends: 34 [2019-11-28 16:55:09,588 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 16:55:09,589 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 [2019-11-28 16:55:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 16:55:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-28 16:55:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-11-28 16:55:09,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2019-11-28 16:55:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:09,595 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-11-28 16:55:09,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:55:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-11-28 16:55:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:55:09,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:09,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:09,597 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2019-11-28 16:55:09,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:09,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535643995] [2019-11-28 16:55:09,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:09,733 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:55:09,733 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:09,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:09 BoogieIcfgContainer [2019-11-28 16:55:09,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:09,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:09,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:09,772 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:09,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:09" (3/4) ... [2019-11-28 16:55:09,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:55:09,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:09,779 INFO L168 Benchmark]: Toolchain (without parser) took 1688.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -108.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:09,779 INFO L168 Benchmark]: CDTParser took 0.30 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. [2019-11-28 16:55:09,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:09,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:09,782 INFO L168 Benchmark]: Boogie Preprocessor took 41.92 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. [2019-11-28 16:55:09,783 INFO L168 Benchmark]: RCFGBuilder took 535.60 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:09,784 INFO L168 Benchmark]: TraceAbstraction took 662.20 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:09,784 INFO L168 Benchmark]: Witness Printer took 4.98 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. [2019-11-28 16:55:09,789 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 388.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.92 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 535.60 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 662.20 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.98 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, 0.1s SatisfiabilityAnalysisTime, 0.1s 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 0.1.25-f470102 [2019-11-28 16:55:12,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:12,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:12,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:12,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:12,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:12,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:12,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:12,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:12,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:12,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:12,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:12,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:12,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:12,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:12,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:12,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:12,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:12,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:12,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:12,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:12,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:12,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:12,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:12,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:12,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:12,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:12,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:12,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:12,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:12,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:12,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:12,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:12,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:12,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:12,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:12,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:12,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:12,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:12,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:12,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:12,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:55:12,244 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:12,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:12,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:12,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:12,252 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:12,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:12,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:12,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:12,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:12,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:12,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:12,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:12,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:55:12,256 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:55:12,256 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:12,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:12,257 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:12,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:12,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:12,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:12,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:12,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:12,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:12,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:12,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:12,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:12,260 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:55:12,260 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:55:12,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:12,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:12,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:55:12,262 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 [2019-11-28 16:55:12,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:12,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:12,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:12,610 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:12,611 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:12,612 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-28 16:55:12,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17e752c6/dc5996611e984a418249321ec1d7a6e9/FLAG0bbe3c776 [2019-11-28 16:55:13,191 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:13,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-28 16:55:13,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17e752c6/dc5996611e984a418249321ec1d7a6e9/FLAG0bbe3c776 [2019-11-28 16:55:13,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17e752c6/dc5996611e984a418249321ec1d7a6e9 [2019-11-28 16:55:13,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:13,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:13,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:13,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:13,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:13,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:13,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d0a45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13, skipping insertion in model container [2019-11-28 16:55:13,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:13,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:13,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:13,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:13,841 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:13,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:13,986 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:13,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13 WrapperNode [2019-11-28 16:55:13,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:13,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:13,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:13,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:13,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:14,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:14,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:14,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:14,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (1/1) ... [2019-11-28 16:55:14,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:14,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:14,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:14,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:14,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (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 [2019-11-28 16:55:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:55:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:55:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:55:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:55:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:14,732 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:14,732 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 16:55:14,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:14 BoogieIcfgContainer [2019-11-28 16:55:14,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:14,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:14,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:14,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:14,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:13" (1/3) ... [2019-11-28 16:55:14,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b418287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:14, skipping insertion in model container [2019-11-28 16:55:14,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:13" (2/3) ... [2019-11-28 16:55:14,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b418287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:14, skipping insertion in model container [2019-11-28 16:55:14,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:14" (3/3) ... [2019-11-28 16:55:14,743 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-28 16:55:14,753 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:14,761 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:14,775 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:14,797 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:14,797 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:14,797 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:14,797 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:14,797 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:14,797 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:14,798 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:14,798 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 16:55:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:55:14,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:14,820 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:14,820 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-28 16:55:14,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:14,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601213391] [2019-11-28 16:55:14,838 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 [2019-11-28 16:55:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:15,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:55:15,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:15,031 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:15,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601213391] [2019-11-28 16:55:15,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:15,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:55:15,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339914047] [2019-11-28 16:55:15,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:15,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:15,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:15,060 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-28 16:55:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:15,078 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-28 16:55:15,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:15,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:55:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:15,088 INFO L225 Difference]: With dead ends: 66 [2019-11-28 16:55:15,089 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 16:55:15,092 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 [2019-11-28 16:55:15,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 16:55:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-28 16:55:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-28 16:55:15,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-28 16:55:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:15,129 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-28 16:55:15,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-28 16:55:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:55:15,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:15,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:15,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:55:15,345 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-28 16:55:15,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:15,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984480596] [2019-11-28 16:55:15,348 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 [2019-11-28 16:55:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:15,445 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:55:15,448 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:15,565 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:15,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984480596] [2019-11-28 16:55:15,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:15,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-28 16:55:15,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925303853] [2019-11-28 16:55:15,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:55:15,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:55:15,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:55:15,726 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2019-11-28 16:55:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:16,067 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-28 16:55:16,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:16,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-28 16:55:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:16,069 INFO L225 Difference]: With dead ends: 38 [2019-11-28 16:55:16,070 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 16:55:16,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-28 16:55:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 16:55:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 16:55:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 16:55:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-28 16:55:16,077 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-11-28 16:55:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:16,077 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-28 16:55:16,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:55:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-28 16:55:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:55:16,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:16,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:16,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:55:16,293 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:16,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2019-11-28 16:55:16,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:16,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83323469] [2019-11-28 16:55:16,297 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 [2019-11-28 16:55:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:16,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:55:16,442 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:16,451 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:16,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83323469] [2019-11-28 16:55:16,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:16,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 16:55:16,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151334106] [2019-11-28 16:55:16,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:55:16,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:16,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:55:16,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:55:16,456 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-11-28 16:55:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:16,490 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-28 16:55:16,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:55:16,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-28 16:55:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:16,492 INFO L225 Difference]: With dead ends: 21 [2019-11-28 16:55:16,492 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 16:55:16,493 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 [2019-11-28 16:55:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 16:55:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 16:55:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 16:55:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-11-28 16:55:16,498 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2019-11-28 16:55:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:16,498 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-11-28 16:55:16,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:55:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-11-28 16:55:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 16:55:16,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:16,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:16,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:55:16,712 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:16,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2019-11-28 16:55:16,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:16,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500103420] [2019-11-28 16:55:16,715 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 [2019-11-28 16:55:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:17,277 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:55:17,277 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:17,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:55:17,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:17 BoogieIcfgContainer [2019-11-28 16:55:17,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:17,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:17,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:17,529 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:17,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:14" (3/4) ... [2019-11-28 16:55:17,532 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:55:17,606 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:55:17,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:17,611 INFO L168 Benchmark]: Toolchain (without parser) took 4072.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 955.0 MB in the beginning and 976.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 98.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:17,612 INFO L168 Benchmark]: CDTParser took 0.26 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. [2019-11-28 16:55:17,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:17,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:17,613 INFO L168 Benchmark]: Boogie Preprocessor took 45.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:17,614 INFO L168 Benchmark]: RCFGBuilder took 639.41 ms. Allocated memory is still 1.1 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. [2019-11-28 16:55:17,615 INFO L168 Benchmark]: TraceAbstraction took 2792.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 976.8 MB in the end (delta: 100.3 MB). Peak memory consumption was 100.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:17,615 INFO L168 Benchmark]: Witness Printer took 77.99 ms. Allocated memory is still 1.1 GB. Free memory is still 976.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:17,618 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 448.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 639.41 ms. Allocated memory is still 1.1 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. * TraceAbstraction took 2792.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 976.8 MB in the end (delta: 100.3 MB). Peak memory consumption was 100.3 MB. Max. memory is 11.5 GB. * Witness Printer took 77.99 ms. Allocated memory is still 1.1 GB. Free memory is still 976.8 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: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.3s 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, 0.3s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 159 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...