./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 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/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 0.1.24-91b1670 [2018-11-28 18:05:27,275 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:27,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:27,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:27,294 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:27,295 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:27,296 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:27,298 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:27,300 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:27,302 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:27,306 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:27,307 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:27,308 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:27,309 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:27,312 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:27,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:27,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:27,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:27,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:27,331 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:27,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:27,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:27,338 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:27,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:27,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:27,341 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:27,344 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:27,347 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:27,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:27,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:27,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:27,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:27,354 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:27,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:27,357 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:27,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:27,360 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:27,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:27,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:27,379 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:27,379 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:27,380 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:27,380 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:27,380 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:27,381 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:27,381 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:27,381 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:27,381 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:27,381 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:27,382 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:27,383 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:27,383 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:27,383 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:27,383 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:27,383 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:27,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:27,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:27,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:27,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:27,384 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:27,384 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:27,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:27,385 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 [2018-11-28 18:05:27,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:27,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:27,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:27,467 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:27,468 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:27,469 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-28 18:05:27,532 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba81196f8/1dfa3c1eb1154d42b931a7c9fbde0a62/FLAGaf5144805 [2018-11-28 18:05:28,006 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:28,008 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-28 18:05:28,016 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba81196f8/1dfa3c1eb1154d42b931a7c9fbde0a62/FLAGaf5144805 [2018-11-28 18:05:28,341 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba81196f8/1dfa3c1eb1154d42b931a7c9fbde0a62 [2018-11-28 18:05:28,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:28,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:28,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:28,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:28,355 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:28,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f6b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28, skipping insertion in model container [2018-11-28 18:05:28,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:28,385 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:28,603 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:28,613 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:28,641 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:28,664 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:28,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28 WrapperNode [2018-11-28 18:05:28,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:28,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:28,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:28,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:28,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:28,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:28,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:28,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:28,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:28,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:28,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:28,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:28,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:28,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:28,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:28,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:28,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:05:28,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:05:29,188 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:29,188 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:05:29,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29 BoogieIcfgContainer [2018-11-28 18:05:29,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:29,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:29,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:29,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:29,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:28" (1/3) ... [2018-11-28 18:05:29,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed53dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:29, skipping insertion in model container [2018-11-28 18:05:29,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (2/3) ... [2018-11-28 18:05:29,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed53dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:29, skipping insertion in model container [2018-11-28 18:05:29,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29" (3/3) ... [2018-11-28 18:05:29,199 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2018-11-28 18:05:29,219 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:29,234 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:29,253 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:29,285 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:29,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:29,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:29,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:29,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:29,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:29,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:29,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:29,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-28 18:05:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:05:29,314 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:29,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:29,318 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:29,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:29,324 INFO L82 PathProgramCache]: Analyzing trace with hash 23164375, now seen corresponding path program 1 times [2018-11-28 18:05:29,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:29,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:29,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:29,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:29,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:29,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:29,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:29,484 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-28 18:05:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:29,513 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-28 18:05:29,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:29,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-28 18:05:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:29,525 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:05:29,525 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:05:29,529 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:05:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:05:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:05:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-28 18:05:29,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-11-28 18:05:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:29,566 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-28 18:05:29,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-28 18:05:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:05:29,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:29,567 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:29,568 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:29,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:29,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2126491567, now seen corresponding path program 1 times [2018-11-28 18:05:29,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:29,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:29,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:29,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:05:29,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:05:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:05:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:29,738 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2018-11-28 18:05:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:29,782 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-28 18:05:29,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:05:29,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 18:05:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:29,784 INFO L225 Difference]: With dead ends: 27 [2018-11-28 18:05:29,784 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 18:05:29,785 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 18:05:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-28 18:05:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 18:05:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-28 18:05:29,790 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-11-28 18:05:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:29,791 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-28 18:05:29,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:05:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-28 18:05:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:05:29,792 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:29,792 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:29,792 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:29,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash -351484205, now seen corresponding path program 1 times [2018-11-28 18:05:29,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:29,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:29,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:29,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:29,846 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:29,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:29 BoogieIcfgContainer [2018-11-28 18:05:29,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:29,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:29,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:29,876 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:29,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29" (3/4) ... [2018-11-28 18:05:29,880 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:29,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:29,881 INFO L168 Benchmark]: Toolchain (without parser) took 1536.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,884 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.31 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,887 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,887 INFO L168 Benchmark]: RCFGBuilder took 463.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,888 INFO L168 Benchmark]: TraceAbstraction took 685.47 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,889 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 318.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.31 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 463.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 685.47 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.06 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 [\old(pi)=2, 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 [count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, term=3, x=3] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, x=3] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, x=3] [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 [count=4, multFactor=-1, pi=314159/100000, temp=0, x=3] [L44] CALL __VERIFIER_assert( oddExp >= evenExp ) VAL [\old(cond)=0, pi=314159/100000] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 1 SDslu, 12 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:05:32,413 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-28 18:05:32,494 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:32,494 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:32,495 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:32,496 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:32,497 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:32,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:32,499 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:32,499 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:32,500 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:32,500 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:32,500 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:32,502 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:32,503 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:32,503 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:32,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:32,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:32,519 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:32,519 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:32,520 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:32,520 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:32,520 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:32,521 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:32,522 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:32,523 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:32,523 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:32,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:32,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:32,524 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:32,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:32,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:32,525 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:32,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:32,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:32,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:32,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:32,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:32,527 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:32,527 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:32,527 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:32,527 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:32,528 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:32,528 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 [2018-11-28 18:05:32,565 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:32,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:32,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:32,583 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:32,584 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:32,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-28 18:05:32,650 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ef269ae/75395e10e79247479448ec43bfd2dcab/FLAGc7e9d56d8 [2018-11-28 18:05:33,091 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:33,092 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-28 18:05:33,099 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ef269ae/75395e10e79247479448ec43bfd2dcab/FLAGc7e9d56d8 [2018-11-28 18:05:33,473 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ef269ae/75395e10e79247479448ec43bfd2dcab [2018-11-28 18:05:33,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:33,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:33,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:33,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:33,485 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:33,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477d3d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33, skipping insertion in model container [2018-11-28 18:05:33,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:33,525 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:33,787 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:33,797 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:33,827 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:33,844 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:33,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33 WrapperNode [2018-11-28 18:05:33,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:33,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:33,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:33,845 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:33,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:33,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:33,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:33,877 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:33,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:33,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:33,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:33,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:33,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:05:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:05:38,916 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:38,916 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:05:38,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:38 BoogieIcfgContainer [2018-11-28 18:05:38,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:38,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:38,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:38,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:38,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:33" (1/3) ... [2018-11-28 18:05:38,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2811d4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:38, skipping insertion in model container [2018-11-28 18:05:38,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (2/3) ... [2018-11-28 18:05:38,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2811d4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:38, skipping insertion in model container [2018-11-28 18:05:38,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:38" (3/3) ... [2018-11-28 18:05:38,927 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2018-11-28 18:05:38,937 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:38,946 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:38,966 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:39,011 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:39,012 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:39,012 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:39,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:39,013 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:39,013 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:39,013 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:39,013 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:39,013 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-28 18:05:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:05:39,041 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:39,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:39,045 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:39,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 23164375, now seen corresponding path program 1 times [2018-11-28 18:05:39,055 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:39,055 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:39,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:39,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:39,170 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:39,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:39,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:39,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:39,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:39,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:39,209 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-28 18:05:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:39,231 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-28 18:05:39,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:39,233 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-28 18:05:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:39,247 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:05:39,247 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:05:39,252 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:05:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:05:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:05:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-28 18:05:39,290 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-11-28 18:05:39,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:39,291 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-28 18:05:39,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-28 18:05:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:05:39,292 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:39,292 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:39,293 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:39,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:39,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2126491567, now seen corresponding path program 1 times [2018-11-28 18:05:39,295 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:39,295 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:39,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:40,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:40,095 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:40,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:40,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:05:40,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:05:40,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:05:40,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:40,119 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2018-11-28 18:05:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:46,241 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-28 18:05:46,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:05:46,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 18:05:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:46,243 INFO L225 Difference]: With dead ends: 27 [2018-11-28 18:05:46,243 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 18:05:46,245 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 18:05:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-28 18:05:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 18:05:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-28 18:05:46,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-11-28 18:05:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:46,250 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-28 18:05:46,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:05:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-28 18:05:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:05:46,252 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:46,252 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:46,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:46,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash -351484205, now seen corresponding path program 1 times [2018-11-28 18:05:46,254 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:46,254 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:46,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:47,889 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:47,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:47 BoogieIcfgContainer [2018-11-28 18:05:47,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:47,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:47,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:47,928 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:47,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:38" (3/4) ... [2018-11-28 18:05:47,931 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:47,985 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:47,985 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:47,986 INFO L168 Benchmark]: Toolchain (without parser) took 14508.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -96.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,989 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:47,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.49 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.98 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:47,991 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,991 INFO L168 Benchmark]: RCFGBuilder took 5005.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,992 INFO L168 Benchmark]: TraceAbstraction took 9009.55 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,994 INFO L168 Benchmark]: Witness Printer took 57.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:47,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 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 364.49 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.98 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 5005.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9009.55 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 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 [\old(pi)=0.000000000000000000000000000000000000000000001401298464324817, 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 [count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, term=0.00000000000000000010842021724855044, x=0.00000000000000000010842021724855044] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, term=0.0000000000000000000000000000000000000058774717541114375, x=0.00000000000000000010842021724855044] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, term=0.0000000000000000000000000000000000000058774717541114375, x=0.00000000000000000010842021724855044] [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 [count=4, evenExp=1.0, multFactor=4294967295, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, temp=0, term=0.0, x=0.00000000000000000010842021724855044] [L44] CALL __VERIFIER_assert( oddExp >= evenExp ) VAL [\old(cond)=0, pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=3.141590118408203] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0, pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 8.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 6.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 373 SizeOfPredicates, 1 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...