./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d056a1f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-3d056a1 [2019-11-22 13:43:30,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 13:43:30,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 13:43:30,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 13:43:30,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 13:43:30,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 13:43:30,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 13:43:30,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 13:43:30,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 13:43:30,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 13:43:30,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 13:43:30,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 13:43:30,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 13:43:30,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 13:43:30,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 13:43:30,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 13:43:30,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 13:43:30,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 13:43:30,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 13:43:30,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 13:43:30,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 13:43:30,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 13:43:30,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 13:43:30,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 13:43:30,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 13:43:30,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 13:43:30,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 13:43:30,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 13:43:30,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 13:43:30,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 13:43:30,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 13:43:30,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 13:43:30,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 13:43:30,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 13:43:30,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 13:43:30,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 13:43:30,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 13:43:30,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 13:43:30,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 13:43:30,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 13:43:30,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 13:43:30,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-22 13:43:30,378 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 13:43:30,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 13:43:30,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 13:43:30,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 13:43:30,383 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 13:43:30,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 13:43:30,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 13:43:30,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 13:43:30,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 13:43:30,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 13:43:30,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 13:43:30,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 13:43:30,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 13:43:30,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 13:43:30,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 13:43:30,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 13:43:30,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 13:43:30,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 13:43:30,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 13:43:30,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 13:43:30,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 13:43:30,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 13:43:30,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 13:43:30,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 13:43:30,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 13:43:30,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 13:43:30,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 13:43:30,393 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 13:43:30,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 13:43:30,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 13:43:30,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 13:43:30,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 13:43:30,743 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 13:43:30,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 13:43:30,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d118902d8/40568a207f1c4dff9aca31277a638a59/FLAG9d1aeb90e [2019-11-22 13:43:31,277 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 13:43:31,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 13:43:31,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d118902d8/40568a207f1c4dff9aca31277a638a59/FLAG9d1aeb90e [2019-11-22 13:43:31,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d118902d8/40568a207f1c4dff9aca31277a638a59 [2019-11-22 13:43:31,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 13:43:31,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 13:43:31,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 13:43:31,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 13:43:31,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 13:43:31,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:31" (1/1) ... [2019-11-22 13:43:31,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f65d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:31, skipping insertion in model container [2019-11-22 13:43:31,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:31" (1/1) ... [2019-11-22 13:43:31,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 13:43:31,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 13:43:32,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 13:43:32,005 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 13:43:32,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 13:43:32,112 INFO L208 MainTranslator]: Completed translation [2019-11-22 13:43:32,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32 WrapperNode [2019-11-22 13:43:32,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 13:43:32,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 13:43:32,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 13:43:32,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 13:43:32,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 13:43:32,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 13:43:32,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 13:43:32,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 13:43:32,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... [2019-11-22 13:43:32,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 13:43:32,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 13:43:32,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 13:43:32,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 13:43:32,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 13:43:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 13:43:32,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 13:43:32,464 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 13:43:32,465 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 13:43:32,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:32 BoogieIcfgContainer [2019-11-22 13:43:32,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 13:43:32,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 13:43:32,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 13:43:32,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 13:43:32,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:31" (1/3) ... [2019-11-22 13:43:32,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf85f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:32, skipping insertion in model container [2019-11-22 13:43:32,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:32" (2/3) ... [2019-11-22 13:43:32,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf85f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:32, skipping insertion in model container [2019-11-22 13:43:32,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:32" (3/3) ... [2019-11-22 13:43:32,480 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 13:43:32,509 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 13:43:32,521 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 13:43:32,542 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 13:43:32,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 13:43:32,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 13:43:32,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 13:43:32,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 13:43:32,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 13:43:32,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 13:43:32,569 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 13:43:32,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 13:43:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-22 13:43:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-22 13:43:32,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 13:43:32,589 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-22 13:43:32,590 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 13:43:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 13:43:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-22 13:43:32,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 13:43:32,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780543520] [2019-11-22 13:43:32,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 13:43:32,688 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-22 13:43:32,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092446294] [2019-11-22 13:43:32,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 13:43:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 13:43:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 13:43:32,759 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-22 13:43:32,760 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 13:43:32,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 13:43:32,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:43:32 BoogieIcfgContainer [2019-11-22 13:43:32,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 13:43:32,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 13:43:32,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 13:43:32,981 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 13:43:32,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:32" (3/4) ... [2019-11-22 13:43:32,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-22 13:43:32,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 13:43:32,993 INFO L168 Benchmark]: Toolchain (without parser) took 1279.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -125.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-22 13:43:32,994 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:43:32,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-22 13:43:32,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:43:33,000 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-22 13:43:33,001 INFO L168 Benchmark]: RCFGBuilder took 285.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-22 13:43:33,002 INFO L168 Benchmark]: TraceAbstraction took 510.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-22 13:43:33,003 INFO L168 Benchmark]: Witness Printer took 8.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:43:33,016 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 400.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.43 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. * Boogie Preprocessor took 25.24 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 285.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 510.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 8.57 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: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-3d056a1 [2019-11-22 13:43:34,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 13:43:34,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 13:43:34,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 13:43:34,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 13:43:34,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 13:43:34,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 13:43:34,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 13:43:34,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 13:43:34,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 13:43:34,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 13:43:34,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 13:43:34,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 13:43:34,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 13:43:34,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 13:43:34,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 13:43:34,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 13:43:34,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 13:43:34,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 13:43:34,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 13:43:34,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 13:43:34,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 13:43:34,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 13:43:34,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 13:43:35,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 13:43:35,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 13:43:35,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 13:43:35,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 13:43:35,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 13:43:35,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 13:43:35,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 13:43:35,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 13:43:35,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 13:43:35,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 13:43:35,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 13:43:35,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 13:43:35,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 13:43:35,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 13:43:35,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 13:43:35,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 13:43:35,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 13:43:35,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-22 13:43:35,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 13:43:35,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 13:43:35,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 13:43:35,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 13:43:35,055 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 13:43:35,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 13:43:35,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 13:43:35,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 13:43:35,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 13:43:35,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 13:43:35,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 13:43:35,058 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-22 13:43:35,059 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-22 13:43:35,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 13:43:35,060 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 13:43:35,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 13:43:35,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 13:43:35,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 13:43:35,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 13:43:35,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 13:43:35,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 13:43:35,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 13:43:35,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 13:43:35,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 13:43:35,063 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-22 13:43:35,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-22 13:43:35,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 13:43:35,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 13:43:35,064 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-22 13:43:35,064 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 13:43:35,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 13:43:35,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 13:43:35,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 13:43:35,423 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 13:43:35,424 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 13:43:35,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 13:43:35,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f304518/db170c616039488fb16ae7c8cd464d13/FLAG2b76f0dab [2019-11-22 13:43:35,960 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 13:43:35,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 13:43:35,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f304518/db170c616039488fb16ae7c8cd464d13/FLAG2b76f0dab [2019-11-22 13:43:36,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f304518/db170c616039488fb16ae7c8cd464d13 [2019-11-22 13:43:36,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 13:43:36,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 13:43:36,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 13:43:36,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 13:43:36,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 13:43:36,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785470ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36, skipping insertion in model container [2019-11-22 13:43:36,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 13:43:36,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 13:43:36,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 13:43:36,680 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 13:43:36,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 13:43:36,804 INFO L208 MainTranslator]: Completed translation [2019-11-22 13:43:36,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36 WrapperNode [2019-11-22 13:43:36,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 13:43:36,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 13:43:36,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 13:43:36,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 13:43:36,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 13:43:36,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 13:43:36,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 13:43:36,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 13:43:36,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... [2019-11-22 13:43:36,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 13:43:36,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 13:43:36,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 13:43:36,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 13:43:36,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 13:43:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 13:43:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 13:43:45,605 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 13:43:45,606 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 13:43:45,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:45 BoogieIcfgContainer [2019-11-22 13:43:45,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 13:43:45,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 13:43:45,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 13:43:45,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 13:43:45,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:36" (1/3) ... [2019-11-22 13:43:45,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787a201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:45, skipping insertion in model container [2019-11-22 13:43:45,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:36" (2/3) ... [2019-11-22 13:43:45,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787a201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:45, skipping insertion in model container [2019-11-22 13:43:45,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:45" (3/3) ... [2019-11-22 13:43:45,615 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 13:43:45,625 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 13:43:45,632 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 13:43:45,641 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 13:43:45,662 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 13:43:45,663 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 13:43:45,663 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 13:43:45,663 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 13:43:45,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 13:43:45,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 13:43:45,664 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 13:43:45,664 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 13:43:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-22 13:43:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-22 13:43:45,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 13:43:45,685 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-22 13:43:45,686 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 13:43:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 13:43:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-22 13:43:45,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 13:43:45,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206757798] [2019-11-22 13:43:45,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-22 13:43:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 13:43:45,834 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 13:43:45,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 13:43:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 13:43:45,954 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 13:43:49,700 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-22 13:43:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 13:43:49,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206757798] [2019-11-22 13:43:49,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 13:43:49,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-22 13:43:49,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088361465] [2019-11-22 13:43:49,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-22 13:43:49,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 13:43:49,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-22 13:43:49,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-22 13:43:49,740 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-22 13:44:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 13:44:08,329 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-22 13:44:08,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 13:44:08,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-22 13:44:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 13:44:08,342 INFO L225 Difference]: With dead ends: 67 [2019-11-22 13:44:08,343 INFO L226 Difference]: Without dead ends: 34 [2019-11-22 13:44:08,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-22 13:44:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-22 13:44:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-22 13:44:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-22 13:44:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-22 13:44:08,384 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-22 13:44:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 13:44:08,384 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-22 13:44:08,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-22 13:44:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-22 13:44:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-22 13:44:08,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 13:44:08,386 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-22 13:44:08,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-22 13:44:08,603 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 13:44:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 13:44:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-22 13:44:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 13:44:08,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080127128] [2019-11-22 13:44:08,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-22 13:44:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 13:44:09,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 13:44:09,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 13:44:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 13:44:11,307 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 13:44:15,171 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from true [2019-11-22 13:44:15,828 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))))) is different from false [2019-11-22 13:44:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 13:44:16,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080127128] [2019-11-22 13:44:16,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 13:44:16,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-22 13:44:16,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800878066] [2019-11-22 13:44:16,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-22 13:44:16,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 13:44:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-22 13:44:16,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-11-22 13:44:16,392 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-22 13:44:21,288 WARN L192 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-22 13:44:34,190 WARN L192 SmtUtils]: Spent 4.61 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-22 13:44:38,019 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-11-22 13:44:40,964 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2019-11-22 13:44:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 13:44:53,927 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-22 13:44:53,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-22 13:44:53,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-22 13:44:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 13:44:53,930 INFO L225 Difference]: With dead ends: 33 [2019-11-22 13:44:53,930 INFO L226 Difference]: Without dead ends: 30 [2019-11-22 13:44:53,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=34, Invalid=64, Unknown=4, NotChecked=54, Total=156 [2019-11-22 13:44:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-22 13:44:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-22 13:44:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-22 13:44:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-22 13:44:53,940 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-22 13:44:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 13:44:53,941 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-22 13:44:53,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-22 13:44:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-22 13:44:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-22 13:44:53,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 13:44:53,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 13:44:54,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-22 13:44:54,145 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 13:44:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 13:44:54,146 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-22 13:44:54,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 13:44:54,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160684416] [2019-11-22 13:44:54,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-22 13:44:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 13:44:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 13:44:57,053 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-22 13:44:57,053 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 13:44:57,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-22 13:44:57,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:44:57 BoogieIcfgContainer [2019-11-22 13:44:57,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 13:44:57,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 13:44:57,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 13:44:57,274 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 13:44:57,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:45" (3/4) ... [2019-11-22 13:44:57,277 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-22 13:44:57,313 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 13:44:57,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 13:44:57,315 INFO L168 Benchmark]: Toolchain (without parser) took 80916.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 960.4 MB in the beginning and 988.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2019-11-22 13:44:57,315 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:44:57,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -137.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-22 13:44:57,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:44:57,318 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:44:57,319 INFO L168 Benchmark]: RCFGBuilder took 8721.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-22 13:44:57,319 INFO L168 Benchmark]: TraceAbstraction took 71665.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.0 MB in the end (delta: 87.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 11.5 GB. [2019-11-22 13:44:57,320 INFO L168 Benchmark]: Witness Printer took 39.25 ms. Allocated memory is still 1.1 GB. Free memory is still 988.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 13:44:57,324 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 401.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -137.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8721.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 71665.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.0 MB in the end (delta: 87.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 11.5 GB. * Witness Printer took 39.25 ms. Allocated memory is still 1.1 GB. Free memory is still 988.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Result: UNSAFE, OverallTime: 71.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 56.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 41 SDslu, 72 SDs, 0 SdLazy, 72 SolverSat, 21 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 34.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1208 SizeOfPredicates, 11 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...