./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 30f4e4ab 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 0.1.24-30f4e4a [2019-11-27 23:50:55,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:50:55,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:50:55,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:50:55,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:50:55,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:50:55,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:50:55,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:50:55,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:50:55,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:50:55,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:50:55,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:50:55,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:50:55,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:50:55,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:50:55,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:50:55,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:50:55,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:50:55,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:50:55,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:50:55,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:50:55,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:50:55,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:50:55,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:50:55,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:50:55,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:50:55,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:50:55,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:50:55,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:50:55,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:50:55,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:50:55,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:50:55,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:50:55,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:50:55,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:50:55,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:50:55,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:50:55,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:50:55,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:50:55,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:50:55,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:50:55,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:50:55,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:50:55,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:50:55,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:50:55,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:50:55,749 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:50:55,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:50:55,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:50:55,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:50:55,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:50:55,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:50:55,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:50:55,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:50:55,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:50:55,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:50:55,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:50:55,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:50:55,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:50:55,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:50:55,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:50:55,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:50:55,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:50:55,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:50:55,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:50:55,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:50:55,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:50:55,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:50:55,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:50:55,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:50:55,754 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 [2019-11-27 23:50:56,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:50:56,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:50:56,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:50:56,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:50:56,094 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:50:56,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-27 23:50:56,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f046a4aa9/a3988cc98c5048de8ec57c4d2cb5c6e0/FLAG936a75a98 [2019-11-27 23:50:56,613 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:50:56,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-27 23:50:56,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f046a4aa9/a3988cc98c5048de8ec57c4d2cb5c6e0/FLAG936a75a98 [2019-11-27 23:50:56,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f046a4aa9/a3988cc98c5048de8ec57c4d2cb5c6e0 [2019-11-27 23:50:57,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:50:57,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:50:57,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:50:57,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:50:57,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:50:57,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57, skipping insertion in model container [2019-11-27 23:50:57,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:50:57,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:50:57,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:50:57,317 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:50:57,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:50:57,498 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:50:57,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57 WrapperNode [2019-11-27 23:50:57,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:50:57,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:50:57,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:50:57,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:50:57,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:50:57,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:50:57,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:50:57,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:50:57,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (1/1) ... [2019-11-27 23:50:57,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:50:57,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:50:57,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:50:57,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:50:57,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (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 [2019-11-27 23:50:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-27 23:50:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:50:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:50:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:50:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:50:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:50:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:50:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:50:58,104 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:50:58,104 INFO L297 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-27 23:50:58,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:50:58 BoogieIcfgContainer [2019-11-27 23:50:58,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:50:58,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:50:58,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:50:58,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:50:58,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:50:57" (1/3) ... [2019-11-27 23:50:58,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef06ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:50:58, skipping insertion in model container [2019-11-27 23:50:58,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:57" (2/3) ... [2019-11-27 23:50:58,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef06ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:50:58, skipping insertion in model container [2019-11-27 23:50:58,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:50:58" (3/3) ... [2019-11-27 23:50:58,116 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-27 23:50:58,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:50:58,134 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:50:58,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:50:58,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:50:58,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:50:58,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:50:58,170 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:50:58,170 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:50:58,170 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:50:58,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:50:58,171 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:50:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-27 23:50:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-27 23:50:58,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:50:58,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:50:58,192 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:50:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:50:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-27 23:50:58,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:50:58,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567389632] [2019-11-27 23:50:58,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:50:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:50:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:50:58,329 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567389632] [2019-11-27 23:50:58,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:50:58,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:50:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281544805] [2019-11-27 23:50:58,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:50:58,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:50:58,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:50:58,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:50:58,349 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-27 23:50:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:50:58,368 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-27 23:50:58,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:50:58,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-27 23:50:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:50:58,380 INFO L225 Difference]: With dead ends: 66 [2019-11-27 23:50:58,380 INFO L226 Difference]: Without dead ends: 31 [2019-11-27 23:50:58,383 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 [2019-11-27 23:50:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-27 23:50:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-27 23:50:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:50:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-27 23:50:58,417 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-27 23:50:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:50:58,417 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-27 23:50:58,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:50:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-27 23:50:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:50:58,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:50:58,419 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:50:58,419 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:50:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:50:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-27 23:50:58,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:50:58,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975551857] [2019-11-27 23:50:58,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:50:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:50:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:50:58,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975551857] [2019-11-27 23:50:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:50:58,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:50:58,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540007567] [2019-11-27 23:50:58,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:50:58,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:50:58,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:50:58,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 23:50:58,500 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-11-27 23:50:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:50:58,538 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-27 23:50:58,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:50:58,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-27 23:50:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:50:58,540 INFO L225 Difference]: With dead ends: 34 [2019-11-27 23:50:58,540 INFO L226 Difference]: Without dead ends: 31 [2019-11-27 23:50:58,541 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 [2019-11-27 23:50:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-27 23:50:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-27 23:50:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:50:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-11-27 23:50:58,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2019-11-27 23:50:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:50:58,548 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-11-27 23:50:58,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:50:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-11-27 23:50:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:50:58,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:50:58,549 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:50:58,550 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:50:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:50:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2019-11-27 23:50:58,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:50:58,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018674324] [2019-11-27 23:50:58,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:50:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:50:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:50:58,706 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:50:58,707 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:50:58,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:50:58 BoogieIcfgContainer [2019-11-27 23:50:58,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:50:58,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:50:58,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:50:58,748 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:50:58,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:50:58" (3/4) ... [2019-11-27 23:50:58,753 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:50:58,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:50:58,755 INFO L168 Benchmark]: Toolchain (without parser) took 1750.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:50:58,756 INFO L168 Benchmark]: CDTParser took 0.65 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. [2019-11-27 23:50:58,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:50:58,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.83 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. [2019-11-27 23:50:58,758 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 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. [2019-11-27 23:50:58,759 INFO L168 Benchmark]: RCFGBuilder took 522.25 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:50:58,760 INFO L168 Benchmark]: TraceAbstraction took 639.85 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:50:58,761 INFO L168 Benchmark]: Witness Printer took 5.21 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. [2019-11-27 23:50:58,765 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 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 494.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.83 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 33.58 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. * RCFGBuilder took 522.25 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 639.85 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.21 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, 0.0s 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 0.1.24-30f4e4a [2019-11-27 23:51:00,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:00,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:00,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:00,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:00,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:00,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:00,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:00,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:00,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:00,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:00,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:00,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:00,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:00,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:00,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:00,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:00,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:00,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:00,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:00,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:00,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:00,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:00,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:00,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:00,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:00,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:00,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:00,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:00,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:00,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:00,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:00,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:00,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:00,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:00,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:00,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:00,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:00,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:00,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:00,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:00,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:00,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:00,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:00,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:00,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:00,923 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:00,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:00,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:00,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:00,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:00,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:00,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:00,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:00,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:00,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:00,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:00,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:00,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:00,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:00,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:00,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:00,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:00,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:00,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:00,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:00,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:00,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:00,928 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:00,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:00,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:00,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:00,929 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 [2019-11-27 23:51:01,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:01,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:01,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:01,300 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:01,301 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:01,303 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-27 23:51:01,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7845a1e7d/4b82379b82f640bbab506e84ba245ea6/FLAG8cbf545b8 [2019-11-27 23:51:01,779 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:01,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2019-11-27 23:51:01,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7845a1e7d/4b82379b82f640bbab506e84ba245ea6/FLAG8cbf545b8 [2019-11-27 23:51:02,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7845a1e7d/4b82379b82f640bbab506e84ba245ea6 [2019-11-27 23:51:02,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:02,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:02,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:02,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:02,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:02,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600cef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02, skipping insertion in model container [2019-11-27 23:51:02,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:02,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:02,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:02,516 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:02,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:02,650 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:02,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02 WrapperNode [2019-11-27 23:51:02,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:02,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:02,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:02,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:02,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:02,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:02,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:02,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:02,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (1/1) ... [2019-11-27 23:51:02,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:02,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:02,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:02,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:02,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (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 [2019-11-27 23:51:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-27 23:51:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:51:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-27 23:51:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:51:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:03,429 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:03,429 INFO L297 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-27 23:51:03,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:03 BoogieIcfgContainer [2019-11-27 23:51:03,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:03,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:03,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:03,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:03,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:02" (1/3) ... [2019-11-27 23:51:03,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ac98e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:03, skipping insertion in model container [2019-11-27 23:51:03,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:02" (2/3) ... [2019-11-27 23:51:03,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ac98e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:03, skipping insertion in model container [2019-11-27 23:51:03,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:03" (3/3) ... [2019-11-27 23:51:03,441 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2019-11-27 23:51:03,452 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:03,462 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:03,474 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:03,497 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:03,497 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:03,498 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:03,498 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:03,498 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:03,498 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:03,498 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:03,499 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-27 23:51:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-27 23:51:03,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:03,522 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:03,522 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2019-11-27 23:51:03,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:03,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773402724] [2019-11-27 23:51:03,542 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 [2019-11-27 23:51:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:03,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:03,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:03,753 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:03,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773402724] [2019-11-27 23:51:03,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:03,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:03,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863686561] [2019-11-27 23:51:03,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:03,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:03,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:03,788 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-27 23:51:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:03,810 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2019-11-27 23:51:03,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:03,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-27 23:51:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:03,823 INFO L225 Difference]: With dead ends: 66 [2019-11-27 23:51:03,824 INFO L226 Difference]: Without dead ends: 31 [2019-11-27 23:51:03,827 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 [2019-11-27 23:51:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-27 23:51:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-27 23:51:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:51:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-27 23:51:03,869 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2019-11-27 23:51:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:03,869 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-27 23:51:03,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-27 23:51:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:51:03,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:03,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:04,073 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:04,074 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:04,075 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2019-11-27 23:51:04,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:04,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591572707] [2019-11-27 23:51:04,077 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 [2019-11-27 23:51:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:04,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:51:04,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:04,324 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:04,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591572707] [2019-11-27 23:51:04,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:04,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-27 23:51:04,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9340979] [2019-11-27 23:51:04,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:51:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:51:04,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:51:04,464 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2019-11-27 23:51:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:04,799 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-27 23:51:04,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:04,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-27 23:51:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:04,800 INFO L225 Difference]: With dead ends: 38 [2019-11-27 23:51:04,800 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 23:51:04,802 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 [2019-11-27 23:51:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 23:51:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-27 23:51:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 23:51:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-27 23:51:04,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-11-27 23:51:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:04,807 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-27 23:51:04,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:51:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-27 23:51:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:51:04,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:04,809 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:05,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:05,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2019-11-27 23:51:05,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:05,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722344432] [2019-11-27 23:51:05,017 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 [2019-11-27 23:51:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:05,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:51:05,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:05,199 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:05,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722344432] [2019-11-27 23:51:05,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:05,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-27 23:51:05,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166504351] [2019-11-27 23:51:05,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:51:05,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:05,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:51:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 23:51:05,204 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-11-27 23:51:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:05,229 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-27 23:51:05,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:51:05,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-27 23:51:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:05,230 INFO L225 Difference]: With dead ends: 21 [2019-11-27 23:51:05,230 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 23:51:05,231 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 [2019-11-27 23:51:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 23:51:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-27 23:51:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 23:51:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-11-27 23:51:05,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2019-11-27 23:51:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:05,237 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-11-27 23:51:05,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:51:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-11-27 23:51:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:51:05,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:05,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:05,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:51:05,442 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2019-11-27 23:51:05,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:05,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352199795] [2019-11-27 23:51:05,444 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 [2019-11-27 23:51:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:05,991 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:51:05,991 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:06,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:51:06,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:06 BoogieIcfgContainer [2019-11-27 23:51:06,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:06,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:06,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:06,272 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:06,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:03" (3/4) ... [2019-11-27 23:51:06,275 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:51:06,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:06,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:06,369 INFO L168 Benchmark]: Toolchain (without parser) took 4154.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -47.6 MB). Peak memory consumption was 108.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:06,369 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. [2019-11-27 23:51:06,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:06,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.75 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. [2019-11-27 23:51:06,371 INFO L168 Benchmark]: Boogie Preprocessor took 45.58 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. [2019-11-27 23:51:06,371 INFO L168 Benchmark]: RCFGBuilder took 683.53 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:06,372 INFO L168 Benchmark]: TraceAbstraction took 2839.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:06,373 INFO L168 Benchmark]: Witness Printer took 94.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:06,376 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 436.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.75 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 45.58 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. * RCFGBuilder took 683.53 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2839.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 11.5 GB. * Witness Printer took 94.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. 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...