./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i -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 ac1c2f023046690eb69a7c8f4224e12d57f24d83 ................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i -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 ac1c2f023046690eb69a7c8f4224e12d57f24d83 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:17:42,555 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:42,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:42,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:17:42,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:17:42,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:17:42,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:17:42,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:17:42,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:17:42,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:17:42,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:17:42,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:17:42,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:17:42,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:17:42,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:17:42,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:17:42,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:17:42,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:17:42,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:17:42,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:17:42,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:17:42,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:17:42,605 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:17:42,606 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:42,606 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:42,607 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:42,611 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:42,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:42,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:42,614 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:42,615 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:42,615 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:42,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:42,620 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:42,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:42,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:42,622 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:17:42,651 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:42,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:42,653 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:42,653 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:42,653 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:42,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:42,653 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:42,654 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:17:42,655 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:42,655 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:42,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:42,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:42,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:42,656 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:42,657 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:42,657 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:42,657 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:42,657 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:42,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:42,660 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:42,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:42,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:42,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:42,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:42,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:42,662 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:17:42,662 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:42,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:17:42,663 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac1c2f023046690eb69a7c8f4224e12d57f24d83 [2019-01-12 09:17:42,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:42,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:42,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:42,750 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:42,750 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:42,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2019-01-12 09:17:42,807 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14d56f59/6ed515e4228140aa91898112f2c13e36/FLAG4b7919c64 [2019-01-12 09:17:43,246 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:43,248 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2019-01-12 09:17:43,255 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14d56f59/6ed515e4228140aa91898112f2c13e36/FLAG4b7919c64 [2019-01-12 09:17:43,613 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14d56f59/6ed515e4228140aa91898112f2c13e36 [2019-01-12 09:17:43,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:43,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:43,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:43,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:43,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:43,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7730cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43, skipping insertion in model container [2019-01-12 09:17:43,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:43,652 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:43,822 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:43,827 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:43,852 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:43,864 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:43,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43 WrapperNode [2019-01-12 09:17:43,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:43,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:43,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:43,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:43,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:43,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:43,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:43,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:43,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (1/1) ... [2019-01-12 09:17:43,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:43,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:43,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:43,922 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:43,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (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 [2019-01-12 09:17:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:44,307 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:44,307 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 09:17:44,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:44 BoogieIcfgContainer [2019-01-12 09:17:44,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:44,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:44,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:44,316 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:44,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:43" (1/3) ... [2019-01-12 09:17:44,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24d8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:44, skipping insertion in model container [2019-01-12 09:17:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:43" (2/3) ... [2019-01-12 09:17:44,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24d8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:44, skipping insertion in model container [2019-01-12 09:17:44,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:44" (3/3) ... [2019-01-12 09:17:44,322 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2019-01-12 09:17:44,333 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:44,341 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:44,361 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:44,414 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:44,415 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:44,415 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:44,415 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:44,416 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:44,419 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:44,419 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:44,419 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:44,420 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-01-12 09:17:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 09:17:44,446 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:44,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 09:17:44,450 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-01-12 09:17:44,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:44,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:44,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:44,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:44,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:44,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:44,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:44,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:44,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:44,583 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-01-12 09:17:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:44,601 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-01-12 09:17:44,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:44,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-01-12 09:17:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:44,613 INFO L225 Difference]: With dead ends: 22 [2019-01-12 09:17:44,613 INFO L226 Difference]: Without dead ends: 10 [2019-01-12 09:17:44,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-12 09:17:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-12 09:17:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-12 09:17:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-01-12 09:17:44,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-01-12 09:17:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:44,645 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-01-12 09:17:44,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:44,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-01-12 09:17:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-12 09:17:44,646 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:44,646 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:44,647 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-01-12 09:17:44,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:44,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:44,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:44,709 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:44,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:44 BoogieIcfgContainer [2019-01-12 09:17:44,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:44,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:44,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:44,745 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:44,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:44" (3/4) ... [2019-01-12 09:17:44,751 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 09:17:44,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:44,752 INFO L168 Benchmark]: Toolchain (without parser) took 1134.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:44,755 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:44,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.63 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:44,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:44,758 INFO L168 Benchmark]: Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:44,761 INFO L168 Benchmark]: RCFGBuilder took 387.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:44,764 INFO L168 Benchmark]: TraceAbstraction took 433.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:44,765 INFO L168 Benchmark]: Witness Printer took 6.67 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. [2019-01-12 09:17:44,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.63 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 33.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 387.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 433.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.67 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: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=314159/100000] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:17:47,004 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:47,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:47,019 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:17:47,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:17:47,021 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:17:47,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:17:47,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:17:47,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:17:47,030 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:17:47,031 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:17:47,033 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:17:47,034 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:17:47,035 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:17:47,037 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:17:47,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:17:47,039 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:17:47,045 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:17:47,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:17:47,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:17:47,056 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:17:47,057 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:17:47,060 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:17:47,060 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:47,060 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:47,061 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:47,062 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:47,063 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:47,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:47,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:47,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:47,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:47,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:47,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:47,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:47,069 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:47,069 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 09:17:47,083 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:47,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:47,085 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:47,085 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:47,085 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:47,085 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:47,086 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:47,086 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:47,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:47,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:47,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:47,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:47,087 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 09:17:47,088 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 09:17:47,088 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:47,088 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:47,088 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:47,088 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:47,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:47,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:47,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:47,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:47,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:47,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:47,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:47,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:47,092 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 09:17:47,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:47,092 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 09:17:47,092 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 09:17:47,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac1c2f023046690eb69a7c8f4224e12d57f24d83 [2019-01-12 09:17:47,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:47,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:47,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:47,148 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:47,148 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:47,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2019-01-12 09:17:47,216 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf1e3d64/dbcaaca01b6e409b81c8141dd1f3eb03/FLAG26381660d [2019-01-12 09:17:47,650 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:47,652 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2019-01-12 09:17:47,659 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf1e3d64/dbcaaca01b6e409b81c8141dd1f3eb03/FLAG26381660d [2019-01-12 09:17:48,023 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf1e3d64/dbcaaca01b6e409b81c8141dd1f3eb03 [2019-01-12 09:17:48,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:48,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:48,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:48,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:48,034 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcbd4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48, skipping insertion in model container [2019-01-12 09:17:48,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:48,065 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:48,275 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:48,282 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:48,305 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:48,321 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:48,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48 WrapperNode [2019-01-12 09:17:48,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:48,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:48,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:48,324 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:48,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:48,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:48,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:48,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:48,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (1/1) ... [2019-01-12 09:17:48,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:48,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:48,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:48,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:48,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (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 [2019-01-12 09:17:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:52,959 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:52,959 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 09:17:52,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:52 BoogieIcfgContainer [2019-01-12 09:17:52,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:52,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:52,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:52,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:52,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:48" (1/3) ... [2019-01-12 09:17:52,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dbed0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:52, skipping insertion in model container [2019-01-12 09:17:52,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:48" (2/3) ... [2019-01-12 09:17:52,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dbed0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:52, skipping insertion in model container [2019-01-12 09:17:52,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:52" (3/3) ... [2019-01-12 09:17:52,970 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2019-01-12 09:17:52,980 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:52,988 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:53,005 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:53,035 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:53,036 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:53,036 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:53,036 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:53,036 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:53,036 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:53,037 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:53,037 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:53,037 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-01-12 09:17:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 09:17:53,059 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:53,060 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 09:17:53,063 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-01-12 09:17:53,074 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:53,075 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:53,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:53,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:53,195 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:53,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:53,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:53,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:53,227 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-01-12 09:17:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:53,239 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-01-12 09:17:53,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:53,241 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-01-12 09:17:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:53,249 INFO L225 Difference]: With dead ends: 22 [2019-01-12 09:17:53,250 INFO L226 Difference]: Without dead ends: 10 [2019-01-12 09:17:53,252 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-12 09:17:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-12 09:17:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-12 09:17:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-01-12 09:17:53,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-01-12 09:17:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:53,287 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-01-12 09:17:53,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-01-12 09:17:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-12 09:17:53,289 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:53,289 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:53,289 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-01-12 09:17:53,291 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:53,291 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:53,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:54,953 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:54,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:54 BoogieIcfgContainer [2019-01-12 09:17:54,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:54,992 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:54,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:54,992 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:54,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:52" (3/4) ... [2019-01-12 09:17:54,998 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 09:17:55,049 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:17:55,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:55,050 INFO L168 Benchmark]: Toolchain (without parser) took 7022.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -120.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,052 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:55,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.09 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:55,054 INFO L168 Benchmark]: Boogie Preprocessor took 42.80 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,054 INFO L168 Benchmark]: RCFGBuilder took 4552.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,056 INFO L168 Benchmark]: TraceAbstraction took 2029.99 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: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,056 INFO L168 Benchmark]: Witness Printer took 57.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:55,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 41.09 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.80 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4552.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2029.99 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: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...