./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.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 8843c970c14fead2ee32d56c7ad1a4a87598c42c ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.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 8843c970c14fead2ee32d56c7ad1a4a87598c42c .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:20,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:20,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:20,647 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:20,647 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:20,648 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:20,649 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:20,651 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:20,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:20,654 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:20,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:20,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:20,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:20,659 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:20,660 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:20,663 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:20,664 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:20,666 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:20,668 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:20,670 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:20,671 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:20,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:20,675 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:20,676 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:20,676 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:20,677 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:20,678 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:20,679 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:20,680 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:20,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:20,681 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:20,682 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:20,682 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:20,683 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:20,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:20,684 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:20,685 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:03:20,704 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:20,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:20,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:20,706 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:20,706 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:20,707 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:20,707 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:20,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:20,707 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:20,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:03:20,707 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:20,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:20,710 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:20,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:20,711 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:20,711 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:20,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:20,711 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:20,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:20,711 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:20,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:20,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:20,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:20,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:20,712 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:20,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:20,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:20,716 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:03:20,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:20,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:03:20,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8843c970c14fead2ee32d56c7ad1a4a87598c42c [2018-11-28 18:03:20,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:20,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:20,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:20,813 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:20,814 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:20,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:20,888 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12539b1f/0845d3c8c73e4a67b4fc8a5f5980b895/FLAG22b258423 [2018-11-28 18:03:21,407 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:21,410 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:21,418 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12539b1f/0845d3c8c73e4a67b4fc8a5f5980b895/FLAG22b258423 [2018-11-28 18:03:21,733 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12539b1f/0845d3c8c73e4a67b4fc8a5f5980b895 [2018-11-28 18:03:21,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:21,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:21,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:21,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:21,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:21,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:21" (1/1) ... [2018-11-28 18:03:21,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14bedcaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:21, skipping insertion in model container [2018-11-28 18:03:21,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:21" (1/1) ... [2018-11-28 18:03:21,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:21,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:21,975 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:21,986 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:22,014 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:22,044 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:22,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22 WrapperNode [2018-11-28 18:03:22,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:22,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:22,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:22,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:22,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:22,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:22,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:22,085 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:22,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (1/1) ... [2018-11-28 18:03:22,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:22,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:22,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:22,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:22,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (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 [2018-11-28 18:03:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:03:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:03:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-11-28 18:03:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-11-28 18:03:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:03:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-28 18:03:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-28 18:03:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:03:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:22,699 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:22,699 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:22,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:22 BoogieIcfgContainer [2018-11-28 18:03:22,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:22,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:22,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:22,706 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:22,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:21" (1/3) ... [2018-11-28 18:03:22,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4796d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:22, skipping insertion in model container [2018-11-28 18:03:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:22" (2/3) ... [2018-11-28 18:03:22,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4796d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:22, skipping insertion in model container [2018-11-28 18:03:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:22" (3/3) ... [2018-11-28 18:03:22,711 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:22,722 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:22,730 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:22,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:22,783 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:22,784 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:22,784 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:22,784 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:22,784 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:22,785 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:22,785 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:22,785 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:22,785 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-28 18:03:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:03:22,814 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:22,815 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:22,817 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:22,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1978899259, now seen corresponding path program 1 times [2018-11-28 18:03:22,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:22,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:22,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:22,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:22,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:22,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:22,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:22,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:22,991 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-28 18:03:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:23,017 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-11-28 18:03:23,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:23,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-28 18:03:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:23,028 INFO L225 Difference]: With dead ends: 54 [2018-11-28 18:03:23,029 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 18:03:23,032 INFO L631 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 [2018-11-28 18:03:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 18:03:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 18:03:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 18:03:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-11-28 18:03:23,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2018-11-28 18:03:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:23,080 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-11-28 18:03:23,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-11-28 18:03:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:03:23,082 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:23,082 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:23,083 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:23,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 749195959, now seen corresponding path program 1 times [2018-11-28 18:03:23,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:23,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:23,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:23,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:23,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:23,315 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:03:23,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:03:23 BoogieIcfgContainer [2018-11-28 18:03:23,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:03:23,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:03:23,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:03:23,365 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:03:23,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:22" (3/4) ... [2018-11-28 18:03:23,372 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:03:23,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:03:23,373 INFO L168 Benchmark]: Toolchain (without parser) took 1635.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -129.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:23,378 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:23,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.89 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:23,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:23,384 INFO L168 Benchmark]: Boogie Preprocessor took 43.95 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:23,386 INFO L168 Benchmark]: RCFGBuilder took 571.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:23,388 INFO L168 Benchmark]: TraceAbstraction took 661.35 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:23,390 INFO L168 Benchmark]: Witness Printer took 8.58 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. [2018-11-28 18:03:23,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.89 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.95 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 571.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 661.35 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 8.58 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = 1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) VAL [\old(x)=6442450955] [L12] __uint32_t ix; VAL [\old(x)=6442450955, x=6442450955] [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; VAL [\old(x)=6442450955, \result=6442450948, ix=2147483658, x=6442450948] [L47] RET, EXPR fabs_float(x) VAL [fabs_float(x)=6442450948, x=6442450955] [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) VAL [\old(x)=6442450948] [L28] __int32_t ix; VAL [\old(x)=6442450948, x=6442450948] [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); VAL [\old(x)=6442450948, \result=0, ix=0, x=6442450948] [L50] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=6442450948, x=6442450955] [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() VAL [res=6442450948, x=6442450955] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.24-91b1670 [2018-11-28 18:03:25,801 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:25,803 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:25,815 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:25,816 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:25,817 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:25,818 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:25,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:25,823 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:25,824 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:25,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:25,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:25,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:25,828 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:25,829 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:25,830 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:25,831 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:25,834 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:25,837 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:25,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:25,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:25,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:25,849 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:25,852 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:25,852 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:25,853 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:25,854 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:25,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:25,862 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:25,864 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:25,864 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:25,870 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:25,871 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:25,871 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:25,872 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:25,875 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:25,876 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:03:25,908 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:25,909 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:25,910 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:25,910 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:25,915 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:25,915 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:25,915 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:25,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:25,915 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:25,916 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:03:25,920 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:03:25,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:25,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:25,920 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:25,920 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:25,923 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:25,923 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:25,923 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:25,924 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:25,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:25,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:03:25,925 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:03:25,926 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8843c970c14fead2ee32d56c7ad1a4a87598c42c [2018-11-28 18:03:25,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:26,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:26,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:26,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:26,026 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:26,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:26,089 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f7adb33/ffa1c081543c4c18999127c1444eda4a/FLAG418e702ea [2018-11-28 18:03:26,538 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:26,539 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:26,548 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f7adb33/ffa1c081543c4c18999127c1444eda4a/FLAG418e702ea [2018-11-28 18:03:26,898 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f7adb33/ffa1c081543c4c18999127c1444eda4a [2018-11-28 18:03:26,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:26,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:26,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:26,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:26,908 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:26,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:26" (1/1) ... [2018-11-28 18:03:26,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a15a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:26, skipping insertion in model container [2018-11-28 18:03:26,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:26" (1/1) ... [2018-11-28 18:03:26,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:26,942 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:27,151 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:27,160 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:27,200 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:27,241 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:27,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27 WrapperNode [2018-11-28 18:03:27,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:27,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:27,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:27,243 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:27,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:27,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:27,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:27,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:27,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (1/1) ... [2018-11-28 18:03:27,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:27,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:27,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:27,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:27,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (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 [2018-11-28 18:03:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-11-28 18:03:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-11-28 18:03:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-28 18:03:27,531 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-28 18:03:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:03:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:27,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:03:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 18:03:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 18:03:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:27,731 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:27,838 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:28,010 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:28,010 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:28 BoogieIcfgContainer [2018-11-28 18:03:28,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:28,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:28,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:28,016 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:26" (1/3) ... [2018-11-28 18:03:28,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5716baf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:28, skipping insertion in model container [2018-11-28 18:03:28,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:27" (2/3) ... [2018-11-28 18:03:28,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5716baf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:28, skipping insertion in model container [2018-11-28 18:03:28,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:28" (3/3) ... [2018-11-28 18:03:28,021 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a_true-unreach-call.c [2018-11-28 18:03:28,031 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:28,038 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:28,057 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:28,091 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:28,092 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:28,092 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:28,093 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:28,093 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:28,093 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:28,093 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:28,093 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:28,094 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-28 18:03:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:03:28,118 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:28,119 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:28,122 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:28,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash -556010884, now seen corresponding path program 1 times [2018-11-28 18:03:28,134 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:28,135 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:03:28,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:28,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:28,244 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:28,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:28,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:28,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:28,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:28,281 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-11-28 18:03:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:28,303 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2018-11-28 18:03:28,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:28,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:03:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:28,313 INFO L225 Difference]: With dead ends: 52 [2018-11-28 18:03:28,313 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 18:03:28,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 18:03:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-28 18:03:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 18:03:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2018-11-28 18:03:28,361 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 22 [2018-11-28 18:03:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:28,361 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2018-11-28 18:03:28,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2018-11-28 18:03:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:03:28,362 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:28,363 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:28,364 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:28,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:28,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1033950520, now seen corresponding path program 1 times [2018-11-28 18:03:28,366 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:28,366 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:03:28,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:28,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:29,716 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:29,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:29,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-28 18:03:29,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:03:29,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:03:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:03:29,737 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 13 states. [2018-11-28 18:03:30,882 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-11-28 18:03:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:31,036 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-11-28 18:03:31,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 18:03:31,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-11-28 18:03:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:31,037 INFO L225 Difference]: With dead ends: 26 [2018-11-28 18:03:31,037 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:03:31,039 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:03:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:03:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:03:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:03:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:03:31,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-28 18:03:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:31,042 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:03:31,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:03:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:03:31,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:03:31,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:03:31,270 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 33) no Hoare annotation was computed. [2018-11-28 18:03:31,271 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 33) the Hoare annotation is: (= |isinf_float_#in~x| isinf_float_~x) [2018-11-28 18:03:31,271 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 29 33) no Hoare annotation was computed. [2018-11-28 18:03:31,271 INFO L451 ceAbstractionStarter]: At program point isinf_floatENTRY(lines 27 36) the Hoare annotation is: true [2018-11-28 18:03:31,271 INFO L448 ceAbstractionStarter]: For program point isinf_floatEXIT(lines 27 36) no Hoare annotation was computed. [2018-11-28 18:03:31,272 INFO L448 ceAbstractionStarter]: For program point isinf_floatFINAL(lines 27 36) no Hoare annotation was computed. [2018-11-28 18:03:31,272 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:03:31,272 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:03:31,272 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:03:31,272 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 11 24) no Hoare annotation was computed. [2018-11-28 18:03:31,272 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 11 24) no Hoare annotation was computed. [2018-11-28 18:03:31,274 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 11 24) the Hoare annotation is: true [2018-11-28 18:03:31,274 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2018-11-28 18:03:31,274 INFO L448 ceAbstractionStarter]: For program point L18-1(lines 11 24) no Hoare annotation was computed. [2018-11-28 18:03:31,274 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2018-11-28 18:03:31,274 INFO L448 ceAbstractionStarter]: For program point L13-1(lines 13 17) no Hoare annotation was computed. [2018-11-28 18:03:31,274 INFO L444 ceAbstractionStarter]: At program point L13-2(lines 13 17) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-11-28 18:03:31,275 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:03:31,275 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:03:31,275 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:03:31,276 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:03:31,276 INFO L448 ceAbstractionStarter]: For program point L50-1(lines 50 53) no Hoare annotation was computed. [2018-11-28 18:03:31,276 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) (_ +zero 8 24))) [2018-11-28 18:03:31,276 INFO L448 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2018-11-28 18:03:31,276 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 38 56) the Hoare annotation is: true [2018-11-28 18:03:31,276 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 38 56) no Hoare annotation was computed. [2018-11-28 18:03:31,277 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 38 56) no Hoare annotation was computed. [2018-11-28 18:03:31,277 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2018-11-28 18:03:31,277 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-28 18:03:31,277 INFO L444 ceAbstractionStarter]: At program point L50(line 50) the Hoare annotation is: (and (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) (_ +zero 8 24))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) (= main_~x~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) (_ +zero 8 24)))) [2018-11-28 18:03:31,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:03:31 BoogieIcfgContainer [2018-11-28 18:03:31,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:03:31,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:03:31,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:03:31,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:03:31,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:28" (3/4) ... [2018-11-28 18:03:31,299 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:03:31,306 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isinf_float [2018-11-28 18:03:31,306 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:03:31,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-11-28 18:03:31,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:03:31,312 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-28 18:03:31,312 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 18:03:31,313 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:03:31,343 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-28 18:03:31,344 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 18:03:31,368 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:03:31,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:03:31,370 INFO L168 Benchmark]: Toolchain (without parser) took 4467.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -56.5 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,371 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:31,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.49 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:31,373 INFO L168 Benchmark]: Boogie Preprocessor took 81.06 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,374 INFO L168 Benchmark]: RCFGBuilder took 642.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,374 INFO L168 Benchmark]: TraceAbstraction took 3281.23 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: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,376 INFO L168 Benchmark]: Witness Printer took 75.27 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:31,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.49 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.06 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 642.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3281.23 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: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. * Witness Printer took 75.27 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 10 SDslu, 139 SDs, 0 SdLazy, 90 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 60 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 8 QuantifiedInterpolants, 8097 SizeOfPredicates, 7 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...