./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_Newton-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63c9276a8cccd047024c328e68c3b8d4993e7244 .................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63c9276a8cccd047024c328e68c3b8d4993e7244 ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:19:33,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:19:33,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:19:33,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:19:33,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:19:33,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:19:33,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:19:33,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:19:33,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:19:33,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:19:33,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:19:33,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:19:33,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:19:33,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:19:33,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:19:33,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:19:33,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:19:33,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:19:33,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:19:33,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:19:33,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:19:33,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:19:33,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:19:33,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:19:33,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:19:33,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:19:33,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:19:33,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:19:33,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:19:33,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:19:33,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:19:33,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:19:33,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:19:33,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:19:33,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:19:33,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:19:33,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:19:33,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:19:33,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:19:33,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:19:33,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:19:33,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:19:33,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:19:33,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:19:33,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:19:33,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:19:33,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:19:33,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:19:33,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:19:33,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:19:33,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:19:33,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:19:33,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:19:33,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:19:33,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:19:33,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:19:33,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:19:33,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:19:33,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:19:33,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:19:33,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:19:33,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:19:33,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:19:33,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:19:33,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:19:33,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:19:33,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:19:33,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:19:33,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:19:33,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:19:33,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:19:33,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63c9276a8cccd047024c328e68c3b8d4993e7244 [2020-10-20 00:19:33,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:19:33,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:19:33,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:19:33,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:19:33,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:19:33,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-10-20 00:19:33,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b8e9dc/10218079963a443285f6a5729f2da6b8/FLAGdca6581ae [2020-10-20 00:19:34,221 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:19:34,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-10-20 00:19:34,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b8e9dc/10218079963a443285f6a5729f2da6b8/FLAGdca6581ae [2020-10-20 00:19:34,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b8e9dc/10218079963a443285f6a5729f2da6b8 [2020-10-20 00:19:34,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:19:34,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:19:34,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:19:34,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:19:34,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:19:34,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:19:34" (1/1) ... [2020-10-20 00:19:34,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bf8075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:34, skipping insertion in model container [2020-10-20 00:19:34,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:19:34" (1/1) ... [2020-10-20 00:19:34,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:19:34,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:19:34,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:19:34,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:19:35,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:19:35,030 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:19:35,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35 WrapperNode [2020-10-20 00:19:35,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:19:35,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:19:35,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:19:35,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:19:35,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:19:35,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:19:35,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:19:35,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:19:35,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... [2020-10-20 00:19:35,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:19:35,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:19:35,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:19:35,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:19:35,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:19:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:19:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:19:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:19:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:19:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:19:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:19:35,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:19:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:19:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:19:35,621 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:19:35,621 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 00:19:35,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:35 BoogieIcfgContainer [2020-10-20 00:19:35,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:19:35,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:19:35,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:19:35,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:19:35,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:19:34" (1/3) ... [2020-10-20 00:19:35,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606736f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:19:35, skipping insertion in model container [2020-10-20 00:19:35,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:35" (2/3) ... [2020-10-20 00:19:35,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606736f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:19:35, skipping insertion in model container [2020-10-20 00:19:35,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:35" (3/3) ... [2020-10-20 00:19:35,640 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2020-10-20 00:19:35,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:19:35,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:19:35,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:19:35,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:19:35,709 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:19:35,709 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:19:35,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:19:35,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:19:35,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:19:35,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:19:35,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:19:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 00:19:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:19:35,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:35,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:35,733 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:35,738 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2020-10-20 00:19:35,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:19:35,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872599302] [2020-10-20 00:19:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:19:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:35,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872599302] [2020-10-20 00:19:35,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:19:35,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:19:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719592701] [2020-10-20 00:19:35,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:19:35,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:19:35,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:19:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:19:35,928 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 00:19:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:19:35,946 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-10-20 00:19:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:19:35,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:19:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:19:35,958 INFO L225 Difference]: With dead ends: 26 [2020-10-20 00:19:35,959 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:19:35,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:19:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:19:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:19:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:19:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 00:19:35,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-10-20 00:19:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:19:35,993 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 00:19:35,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:19:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 00:19:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:19:35,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:35,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:35,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:19:35,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2020-10-20 00:19:35,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:19:35,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193951911] [2020-10-20 00:19:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:19:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:36,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193951911] [2020-10-20 00:19:36,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:19:36,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:19:36,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383999439] [2020-10-20 00:19:36,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:19:36,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:19:36,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:19:36,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:19:36,107 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-10-20 00:19:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:19:36,118 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:19:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:19:36,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 00:19:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:19:36,119 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:19:36,120 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:19:36,121 INFO L677 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 [2020-10-20 00:19:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:19:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:19:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:19:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 00:19:36,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-20 00:19:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:19:36,126 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 00:19:36,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:19:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 00:19:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:19:36,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:36,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:36,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:19:36,128 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:36,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2020-10-20 00:19:36,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:19:36,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340913562] [2020-10-20 00:19:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:19:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:19:36,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:19:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:19:36,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:19:36,319 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:19:36,319 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:19:36,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:19:36,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:19:36 BoogieIcfgContainer [2020-10-20 00:19:36,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:19:36,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:19:36,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:19:36,354 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:19:36,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:35" (3/4) ... [2020-10-20 00:19:36,360 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:19:36,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:19:36,363 INFO L168 Benchmark]: Toolchain (without parser) took 1757.90 ms. Allocated memory was 35.7 MB in the beginning and 48.2 MB in the end (delta: 12.6 MB). Free memory was 9.9 MB in the beginning and 22.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 244.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,364 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 13.7 MB in the beginning and 13.7 MB in the end (delta: 32.3 kB). Peak memory consumption was 32.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.84 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 9.1 MB in the beginning and 18.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 44.6 MB. Free memory was 17.9 MB in the beginning and 16.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,368 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 16.1 MB in the beginning and 26.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,369 INFO L168 Benchmark]: RCFGBuilder took 505.91 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,371 INFO L168 Benchmark]: TraceAbstraction took 724.76 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,373 INFO L168 Benchmark]: Witness Printer took 6.26 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 22.3 MB in the end (delta: 300.6 kB). Peak memory consumption was 300.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:19:36,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 13.7 MB in the beginning and 13.7 MB in the end (delta: 32.3 kB). Peak memory consumption was 32.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 421.84 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 9.1 MB in the beginning and 18.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 44.6 MB. Free memory was 17.9 MB in the beginning and 16.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 36.43 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 16.1 MB in the beginning and 26.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 505.91 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 724.76 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 24.5 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Witness Printer took 6.26 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 22.3 MB in the end (delta: 300.6 kB). Peak memory consumption was 300.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] r = inv(a) [L16] COND TRUE !(cond) [L3] __assert_fail("0", "inv_Newton-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 3 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=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:19:38,607 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:19:38,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:19:38,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:19:38,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:19:38,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:19:38,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:19:38,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:19:38,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:19:38,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:19:38,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:19:38,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:19:38,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:19:38,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:19:38,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:19:38,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:19:38,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:19:38,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:19:38,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:19:38,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:19:38,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:19:38,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:19:38,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:19:38,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:19:38,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:19:38,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:19:38,733 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:19:38,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:19:38,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:19:38,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:19:38,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:19:38,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:19:38,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:19:38,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:19:38,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:19:38,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:19:38,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:19:38,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:19:38,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:19:38,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:19:38,737 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:19:38,737 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:19:38,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:19:38,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:19:38,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:19:38,738 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63c9276a8cccd047024c328e68c3b8d4993e7244 [2020-10-20 00:19:38,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:19:38,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:19:38,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:19:38,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:19:38,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:19:38,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-10-20 00:19:39,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c063daf/ff8c4f14c40c41cab97d4b78ca4c5f46/FLAG2e2c7e609 [2020-10-20 00:19:39,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:19:39,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-10-20 00:19:39,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c063daf/ff8c4f14c40c41cab97d4b78ca4c5f46/FLAG2e2c7e609 [2020-10-20 00:19:39,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c063daf/ff8c4f14c40c41cab97d4b78ca4c5f46 [2020-10-20 00:19:39,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:19:39,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:19:39,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:19:39,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:19:39,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:19:39,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:19:39" (1/1) ... [2020-10-20 00:19:39,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc70397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:39, skipping insertion in model container [2020-10-20 00:19:39,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:19:39" (1/1) ... [2020-10-20 00:19:39,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:19:39,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:19:40,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:19:40,261 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:19:40,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:19:40,347 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:19:40,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40 WrapperNode [2020-10-20 00:19:40,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:19:40,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:19:40,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:19:40,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:19:40,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:19:40,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:19:40,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:19:40,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:19:40,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... [2020-10-20 00:19:40,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:19:40,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:19:40,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:19:40,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:19:40,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:19:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:19:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:19:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:19:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:19:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2020-10-20 00:19:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:19:40,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:19:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2020-10-20 00:19:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:19:43,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:19:43,009 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 00:19:43,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:43 BoogieIcfgContainer [2020-10-20 00:19:43,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:19:43,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:19:43,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:19:43,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:19:43,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:19:39" (1/3) ... [2020-10-20 00:19:43,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a21197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:19:43, skipping insertion in model container [2020-10-20 00:19:43,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:19:40" (2/3) ... [2020-10-20 00:19:43,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a21197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:19:43, skipping insertion in model container [2020-10-20 00:19:43,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:43" (3/3) ... [2020-10-20 00:19:43,022 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2020-10-20 00:19:43,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:19:43,047 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:19:43,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:19:43,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:19:43,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:19:43,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:19:43,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:19:43,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:19:43,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:19:43,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:19:43,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:19:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 00:19:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:19:43,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:43,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:43,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2020-10-20 00:19:43,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:19:43,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105067337] [2020-10-20 00:19:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:19:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:43,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:19:43,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:19:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:43,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:19:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:43,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105067337] [2020-10-20 00:19:43,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:19:43,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:19:43,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323526944] [2020-10-20 00:19:43,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:19:43,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:19:43,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:19:43,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:19:43,292 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 00:19:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:19:43,307 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-10-20 00:19:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:19:43,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:19:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:19:43,317 INFO L225 Difference]: With dead ends: 26 [2020-10-20 00:19:43,318 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:19:43,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:19:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:19:43,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:19:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:19:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 00:19:43,353 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-10-20 00:19:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:19:43,353 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 00:19:43,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:19:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 00:19:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:19:43,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:43,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:43,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:19:43,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2020-10-20 00:19:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:19:43,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87178010] [2020-10-20 00:19:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:19:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:43,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:19:43,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:19:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:43,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:19:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:19:43,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87178010] [2020-10-20 00:19:43,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:19:43,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:19:43,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672324167] [2020-10-20 00:19:43,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:19:43,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:19:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:19:43,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:19:43,726 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-10-20 00:19:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:19:46,089 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 00:19:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:19:46,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 00:19:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:19:46,090 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:19:46,090 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:19:46,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:19:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:19:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:19:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:19:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 00:19:46,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-20 00:19:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:19:46,101 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 00:19:46,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:19:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 00:19:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:19:46,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:19:46,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:19:46,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:19:46,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:19:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:19:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2020-10-20 00:19:46,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:19:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232267914] [2020-10-20 00:19:46,323 INFO L95 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 [2020-10-20 00:19:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:47,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 00:19:47,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:19:47,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232267914] [2020-10-20 00:19:47,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:19:47,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1968068218] [2020-10-20 00:19:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:19:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:50,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 00:19:50,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:19:50,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:19:50,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938706054] [2020-10-20 00:19:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:19:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:19:55,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-20 00:19:55,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:19:55,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:19:55,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:19:55,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:19:55,845 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:19:55,846 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:19:56,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:19:56,486 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:19:56,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:19:56 BoogieIcfgContainer [2020-10-20 00:19:56,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:19:56,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:19:56,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:19:56,488 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:19:56,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:19:43" (3/4) ... [2020-10-20 00:19:56,493 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:19:56,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:19:56,496 INFO L168 Benchmark]: Toolchain (without parser) took 16597.10 ms. Allocated memory was 38.3 MB in the beginning and 46.1 MB in the end (delta: 7.9 MB). Free memory was 19.4 MB in the beginning and 24.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,498 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.2 MB. Free memory was 14.2 MB in the beginning and 14.2 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.25 ms. Allocated memory was 38.3 MB in the beginning and 43.5 MB in the end (delta: 5.2 MB). Free memory was 18.5 MB in the beginning and 23.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.15 ms. Allocated memory is still 43.5 MB. Free memory was 23.5 MB in the beginning and 21.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,501 INFO L168 Benchmark]: Boogie Preprocessor took 39.24 ms. Allocated memory is still 43.5 MB. Free memory was 21.5 MB in the beginning and 19.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,502 INFO L168 Benchmark]: RCFGBuilder took 2558.84 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 19.7 MB in the beginning and 12.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,503 INFO L168 Benchmark]: TraceAbstraction took 13474.10 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 12.3 MB in the beginning and 24.5 MB in the end (delta: -12.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:19:56,503 INFO L168 Benchmark]: Witness Printer took 6.21 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 24.2 MB in the end (delta: 318.5 kB). Peak memory consumption was 318.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:19:56,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.2 MB. Free memory was 14.2 MB in the beginning and 14.2 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 444.25 ms. Allocated memory was 38.3 MB in the beginning and 43.5 MB in the end (delta: 5.2 MB). Free memory was 18.5 MB in the beginning and 23.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.15 ms. Allocated memory is still 43.5 MB. Free memory was 23.5 MB in the beginning and 21.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 39.24 ms. Allocated memory is still 43.5 MB. Free memory was 21.5 MB in the beginning and 19.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 2558.84 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 19.7 MB in the beginning and 12.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 13474.10 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 12.3 MB in the beginning and 24.5 MB in the end (delta: -12.3 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 6.21 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 24.2 MB in the end (delta: 318.5 kB). Peak memory consumption was 318.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] r = inv(a) [L16] COND TRUE !(cond) [L3] __assert_fail("0", "inv_Newton-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 13.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 14 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 1 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...