./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_square-2.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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_square-2.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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:36:55,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:55,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:36:55,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:36:55,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:36:55,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:36:55,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:36:55,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:36:55,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:36:55,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:36:55,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:36:55,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:36:55,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:36:55,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:36:55,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:36:55,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:36:55,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:36:55,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:36:55,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:36:55,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:36:55,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:36:55,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:36:55,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:36:55,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:36:55,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:36:55,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:36:55,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:36:55,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:36:55,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:36:55,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:36:55,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:36:55,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:36:55,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:36:55,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:36:55,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:36:55,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:36:55,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:36:55,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:36:55,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:36:55,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:36:55,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:36:55,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:36:55,711 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:36:55,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:36:55,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:36:55,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:36:55,715 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:36:55,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:36:55,716 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:36:55,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:36:55,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:36:55,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:36:55,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:36:55,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:36:55,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:36:55,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:36:55,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:36:55,719 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:36:55,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:36:55,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:36:55,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:36:55,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:36:55,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:36:55,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:55,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:36:55,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:36:55,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:36:55,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:36:55,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:36:55,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:36:55,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2019-11-27 23:36:56,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:36:56,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:36:56,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:36:56,107 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:36:56,107 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:36:56,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-27 23:36:56,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e60c701/9c02adc4f46947ca9cc46ede6222a826/FLAG354bcf35b [2019-11-27 23:36:56,668 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:36:56,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-27 23:36:56,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e60c701/9c02adc4f46947ca9cc46ede6222a826/FLAG354bcf35b [2019-11-27 23:36:57,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e60c701/9c02adc4f46947ca9cc46ede6222a826 [2019-11-27 23:36:57,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:36:57,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:36:57,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:57,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:36:57,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:36:57,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a4f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57, skipping insertion in model container [2019-11-27 23:36:57,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:36:57,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:36:57,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:57,232 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:36:57,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:57,265 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:36:57,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57 WrapperNode [2019-11-27 23:36:57,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:57,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:57,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:36:57,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:36:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:57,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:36:57,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:36:57,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:36:57,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... [2019-11-27 23:36:57,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:36:57,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:36:57,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:36:57,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:36:57,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:36:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:36:57,612 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:36:57,613 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:36:57,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57 BoogieIcfgContainer [2019-11-27 23:36:57,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:36:57,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:36:57,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:36:57,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:36:57,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:57" (1/3) ... [2019-11-27 23:36:57,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c44481c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:57, skipping insertion in model container [2019-11-27 23:36:57,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:57" (2/3) ... [2019-11-27 23:36:57,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c44481c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:57, skipping insertion in model container [2019-11-27 23:36:57,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57" (3/3) ... [2019-11-27 23:36:57,622 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2019-11-27 23:36:57,630 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:36:57,637 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:36:57,650 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:36:57,675 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:36:57,676 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:36:57,676 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:36:57,676 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:36:57,676 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:36:57,677 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:36:57,677 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:36:57,677 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:36:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-27 23:36:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:36:57,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:36:57,701 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:36:57,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:36:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:36:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-27 23:36:57,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:36:57,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488526936] [2019-11-27 23:36:57,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:36:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:57,827 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:36:57,828 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:36:57,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:36:57 BoogieIcfgContainer [2019-11-27 23:36:57,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:36:57,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:36:57,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:36:57,848 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:36:57,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57" (3/4) ... [2019-11-27 23:36:57,853 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:36:57,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:36:57,857 INFO L168 Benchmark]: Toolchain (without parser) took 836.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -136.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:57,857 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:57,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.11 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:57,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:57,861 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:57,862 INFO L168 Benchmark]: RCFGBuilder took 232.36 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:57,863 INFO L168 Benchmark]: TraceAbstraction took 231.23 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:57,863 INFO L168 Benchmark]: Witness Printer took 6.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:57,868 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.11 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 93.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 232.36 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 231.23 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.38 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x <= -1e-20f || x >= 1e-20f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:36:59,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:59,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:37:00,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:37:00,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:37:00,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:37:00,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:37:00,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:37:00,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:37:00,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:37:00,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:37:00,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:37:00,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:37:00,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:37:00,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:37:00,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:37:00,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:37:00,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:37:00,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:37:00,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:37:00,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:37:00,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:37:00,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:37:00,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:37:00,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:37:00,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:37:00,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:37:00,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:37:00,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:37:00,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:37:00,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:37:00,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:37:00,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:37:00,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:37:00,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:37:00,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:37:00,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:37:00,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:37:00,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:37:00,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:37:00,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:37:00,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:37:00,092 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:37:00,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:37:00,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:37:00,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:37:00,095 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:37:00,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:37:00,095 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:37:00,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:37:00,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:37:00,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:37:00,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:37:00,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:37:00,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:37:00,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:37:00,098 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:37:00,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:37:00,098 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:37:00,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:37:00,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:37:00,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:37:00,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:37:00,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:37:00,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:37:00,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:37:00,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:37:00,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:37:00,103 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:37:00,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:37:00,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:37:00,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:37:00,104 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2019-11-27 23:37:00,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:37:00,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:37:00,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:37:00,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:37:00,455 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:37:00,457 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-27 23:37:00,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c870d22/9af823cac8004f78a1a566b3e7f9156a/FLAG8fb117101 [2019-11-27 23:37:01,042 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:37:01,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-27 23:37:01,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c870d22/9af823cac8004f78a1a566b3e7f9156a/FLAG8fb117101 [2019-11-27 23:37:01,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c870d22/9af823cac8004f78a1a566b3e7f9156a [2019-11-27 23:37:01,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:37:01,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:37:01,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:01,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:37:01,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:37:01,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33138635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01, skipping insertion in model container [2019-11-27 23:37:01,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:37:01,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:37:01,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:01,689 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:37:01,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:01,723 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:37:01,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01 WrapperNode [2019-11-27 23:37:01,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:01,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:01,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:37:01,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:37:01,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:01,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:37:01,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:37:01,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:37:01,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... [2019-11-27 23:37:01,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:37:01,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:37:01,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:37:01,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:37:01,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:37:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:37:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:37:02,600 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:37:02,600 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:37:02,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:02 BoogieIcfgContainer [2019-11-27 23:37:02,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:37:02,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:37:02,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:37:02,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:37:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:37:01" (1/3) ... [2019-11-27 23:37:02,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b658bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:02, skipping insertion in model container [2019-11-27 23:37:02,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:01" (2/3) ... [2019-11-27 23:37:02,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b658bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:02, skipping insertion in model container [2019-11-27 23:37:02,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:02" (3/3) ... [2019-11-27 23:37:02,609 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2019-11-27 23:37:02,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:37:02,623 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:37:02,633 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:37:02,656 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:37:02,656 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:37:02,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:37:02,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:37:02,657 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:37:02,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:37:02,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:37:02,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:37:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-27 23:37:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:37:02,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:37:02,678 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:37:02,678 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:37:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:37:02,684 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2019-11-27 23:37:02,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:37:02,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104354223] [2019-11-27 23:37:02,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 23:37:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:37:02,883 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:37:02,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:37:02,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:37:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:37:03,819 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:37:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:37:04,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104354223] [2019-11-27 23:37:04,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:37:04,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2019-11-27 23:37:04,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466220108] [2019-11-27 23:37:04,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:37:04,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:37:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:37:04,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:37:04,324 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 6 states. [2019-11-27 23:37:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:37:04,670 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-27 23:37:04,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:37:04,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-11-27 23:37:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:37:04,717 INFO L225 Difference]: With dead ends: 20 [2019-11-27 23:37:04,717 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:37:04,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:37:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:37:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:37:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:37:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:37:04,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-27 23:37:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:37:04,749 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:37:04,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:37:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:37:04,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:37:04,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:37:04,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:37:05,058 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:37:05,058 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:37:05,059 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:37:05,059 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:37:05,059 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-27 23:37:05,059 INFO L242 CegarLoopResult]: At program point L22(lines 10 23) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_main_~x~0 .cse0) (= currentRoundingMode roundNearestTiesToEven) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg .cse0)))) [2019-11-27 23:37:05,059 INFO L246 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-27 23:37:05,060 INFO L246 CegarLoopResult]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2019-11-27 23:37:05,060 INFO L246 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-27 23:37:05,060 INFO L246 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-11-27 23:37:05,060 INFO L242 CegarLoopResult]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (fp.leq ULTIMATE.start_main_~x~0 .cse0) (= currentRoundingMode roundNearestTiesToEven) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg .cse0)))) [2019-11-27 23:37:05,070 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,073 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,074 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,074 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,077 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,078 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,078 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,078 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,079 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,081 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,081 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,082 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,082 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:37:05 BoogieIcfgContainer [2019-11-27 23:37:05,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:37:05,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:37:05,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:37:05,086 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:37:05,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:02" (3/4) ... [2019-11-27 23:37:05,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:37:05,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-27 23:37:05,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-27 23:37:05,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:37:05,151 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:37:05,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:37:05,155 INFO L168 Benchmark]: Toolchain (without parser) took 3686.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -96.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:05,156 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:05,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:05,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:05,158 INFO L168 Benchmark]: Boogie Preprocessor took 23.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:05,159 INFO L168 Benchmark]: RCFGBuilder took 760.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:05,160 INFO L168 Benchmark]: TraceAbstraction took 2482.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:05,161 INFO L168 Benchmark]: Witness Printer took 66.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:05,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 91.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 760.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2482.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Witness Printer took 66.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 8]: Loop Invariant [2019-11-27 23:37:05,178 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,180 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~bvadd64(cond, 4294967295bv32) == 0bv32 && ~fp.leq~FLOAT(x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.geq~FLOAT(x, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) - InvariantResult [Line: 10]: Loop Invariant [2019-11-27 23:37:05,182 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,183 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,183 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:37:05,183 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,184 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:37:05,184 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.leq~FLOAT(x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.geq~FLOAT(x, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 25 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 35 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 5 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...