./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5a079682 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-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 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-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 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 0.1.24-5a07968 [2019-11-22 11:18:46,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 11:18:46,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 11:18:46,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 11:18:46,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 11:18:46,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 11:18:46,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 11:18:46,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 11:18:46,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 11:18:46,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 11:18:46,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 11:18:46,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 11:18:46,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 11:18:46,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 11:18:46,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 11:18:46,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 11:18:46,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 11:18:46,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 11:18:46,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 11:18:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 11:18:46,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 11:18:46,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 11:18:46,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 11:18:46,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 11:18:46,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 11:18:46,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 11:18:46,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 11:18:46,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 11:18:46,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 11:18:46,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 11:18:46,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 11:18:46,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 11:18:46,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 11:18:46,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 11:18:46,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 11:18:46,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 11:18:46,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 11:18:46,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 11:18:46,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 11:18:46,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 11:18:46,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 11:18:46,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-22 11:18:46,344 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 11:18:46,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 11:18:46,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 11:18:46,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 11:18:46,347 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 11:18:46,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 11:18:46,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-22 11:18:46,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 11:18:46,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-22 11:18:46,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 11:18:46,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 11:18:46,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 11:18:46,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 11:18:46,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 11:18:46,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-22 11:18:46,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 11:18:46,350 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 11:18:46,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 11:18:46,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 11:18:46,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 11:18:46,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 11:18:46,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 11:18:46,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 11:18:46,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 11:18:46,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 11:18:46,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 11:18:46,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 11:18:46,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 11:18:46,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 11:18:46,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 11:18:46,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 11:18:46,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 11:18:46,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 11:18:46,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 11:18:46,680 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 11:18:46,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:18:46,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8175b2056/780d4f74c9ec4297a2514812dd5efa6f/FLAG765ed3392 [2019-11-22 11:18:47,208 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 11:18:47,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:18:47,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8175b2056/780d4f74c9ec4297a2514812dd5efa6f/FLAG765ed3392 [2019-11-22 11:18:47,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8175b2056/780d4f74c9ec4297a2514812dd5efa6f [2019-11-22 11:18:47,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 11:18:47,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 11:18:47,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 11:18:47,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 11:18:47,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 11:18:47,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:47,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598286fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47, skipping insertion in model container [2019-11-22 11:18:47,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:47,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 11:18:47,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 11:18:47,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:18:47,871 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 11:18:47,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:18:47,918 INFO L208 MainTranslator]: Completed translation [2019-11-22 11:18:47,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47 WrapperNode [2019-11-22 11:18:47,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 11:18:47,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 11:18:47,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 11:18:47,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 11:18:47,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:47,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 11:18:48,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 11:18:48,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 11:18:48,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 11:18:48,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (1/1) ... [2019-11-22 11:18:48,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 11:18:48,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 11:18:48,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 11:18:48,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 11:18:48,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (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 11:18:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 11:18:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 11:18:48,328 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 11:18:48,328 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 11:18:48,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:48 BoogieIcfgContainer [2019-11-22 11:18:48,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 11:18:48,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 11:18:48,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 11:18:48,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 11:18:48,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:47" (1/3) ... [2019-11-22 11:18:48,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bf680e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:48, skipping insertion in model container [2019-11-22 11:18:48,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:47" (2/3) ... [2019-11-22 11:18:48,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bf680e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:48, skipping insertion in model container [2019-11-22 11:18:48,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:48" (3/3) ... [2019-11-22 11:18:48,338 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 11:18:48,361 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 11:18:48,374 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 11:18:48,399 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 11:18:48,459 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 11:18:48,460 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 11:18:48,460 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 11:18:48,460 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 11:18:48,460 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 11:18:48,460 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 11:18:48,461 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 11:18:48,461 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 11:18:48,478 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-22 11:18:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-22 11:18:48,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:18:48,483 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-22 11:18:48,483 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 11:18:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:18:48,488 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-22 11:18:48,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 11:18:48,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829899770] [2019-11-22 11:18:48,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 11:18:48,574 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-22 11:18:48,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686334967] [2019-11-22 11:18:48,575 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 11:18:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:18:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:18:48,628 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-22 11:18:48,629 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 11:18:48,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 11:18:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:18:48 BoogieIcfgContainer [2019-11-22 11:18:48,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 11:18:48,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 11:18:48,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 11:18:48,857 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 11:18:48,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:48" (3/4) ... [2019-11-22 11:18:48,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-22 11:18:48,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 11:18:48,865 INFO L168 Benchmark]: Toolchain (without parser) took 1259.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-22 11:18:48,866 INFO L168 Benchmark]: CDTParser took 0.76 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 11:18:48,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.20 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-22 11:18:48,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-22 11:18:48,869 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-22 11:18:48,870 INFO L168 Benchmark]: RCFGBuilder took 288.75 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 11:18:48,871 INFO L168 Benchmark]: TraceAbstraction took 524.91 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-22 11:18:48,871 INFO L168 Benchmark]: Witness Printer took 5.53 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 11:18:48,876 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 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 314.20 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 89.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.41 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 288.75 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. * TraceAbstraction took 524.91 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.53 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: 0.3s, 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 0.1.24-5a07968 [2019-11-22 11:18:50,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 11:18:50,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 11:18:50,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 11:18:50,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 11:18:50,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 11:18:50,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 11:18:50,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 11:18:50,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 11:18:50,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 11:18:50,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 11:18:50,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 11:18:50,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 11:18:50,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 11:18:50,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 11:18:50,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 11:18:50,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 11:18:50,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 11:18:50,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 11:18:50,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 11:18:50,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 11:18:50,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 11:18:50,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 11:18:50,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 11:18:50,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 11:18:50,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 11:18:50,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 11:18:50,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 11:18:50,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 11:18:50,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 11:18:50,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 11:18:50,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 11:18:50,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 11:18:50,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 11:18:50,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 11:18:50,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 11:18:50,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 11:18:50,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 11:18:50,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 11:18:50,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 11:18:50,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 11:18:50,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-22 11:18:50,860 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 11:18:50,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 11:18:50,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 11:18:50,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 11:18:50,862 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 11:18:50,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 11:18:50,863 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-22 11:18:50,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-22 11:18:50,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 11:18:50,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 11:18:50,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 11:18:50,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 11:18:50,865 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-22 11:18:50,866 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-22 11:18:50,866 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-22 11:18:50,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-22 11:18:50,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 11:18:50,867 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 11:18:50,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 11:18:50,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 11:18:50,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 11:18:50,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 11:18:50,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 11:18:50,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 11:18:50,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 11:18:50,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 11:18:50,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 11:18:50,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-22 11:18:50,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-22 11:18:50,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 11:18:50,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 11:18:50,871 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-22 11:18:51,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 11:18:51,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 11:18:51,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 11:18:51,236 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 11:18:51,237 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 11:18:51,238 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:18:51,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2cf00fe3/dfaa0da94d564d9bb8bc98672e13d876/FLAGe1708c7ba [2019-11-22 11:18:51,769 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 11:18:51,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-22 11:18:51,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2cf00fe3/dfaa0da94d564d9bb8bc98672e13d876/FLAGe1708c7ba [2019-11-22 11:18:52,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2cf00fe3/dfaa0da94d564d9bb8bc98672e13d876 [2019-11-22 11:18:52,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 11:18:52,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 11:18:52,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 11:18:52,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 11:18:52,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 11:18:52,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cab9646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52, skipping insertion in model container [2019-11-22 11:18:52,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 11:18:52,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-22 11:18:52,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:18:52,371 INFO L203 MainTranslator]: Completed pre-run [2019-11-22 11:18:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 11:18:52,415 INFO L208 MainTranslator]: Completed translation [2019-11-22 11:18:52,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52 WrapperNode [2019-11-22 11:18:52,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 11:18:52,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 11:18:52,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 11:18:52,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 11:18:52,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 11:18:52,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 11:18:52,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 11:18:52,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 11:18:52,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (1/1) ... [2019-11-22 11:18:52,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 11:18:52,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 11:18:52,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 11:18:52,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 11:18:52,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (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 11:18:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 11:18:52,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 11:19:02,748 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 11:19:02,749 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-22 11:19:02,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:19:02 BoogieIcfgContainer [2019-11-22 11:19:02,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 11:19:02,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 11:19:02,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 11:19:02,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 11:19:02,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:52" (1/3) ... [2019-11-22 11:19:02,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf12c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:19:02, skipping insertion in model container [2019-11-22 11:19:02,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:52" (2/3) ... [2019-11-22 11:19:02,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf12c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:19:02, skipping insertion in model container [2019-11-22 11:19:02,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:19:02" (3/3) ... [2019-11-22 11:19:02,760 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-22 11:19:02,770 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 11:19:02,779 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-22 11:19:02,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-22 11:19:02,821 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 11:19:02,821 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 11:19:02,821 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 11:19:02,821 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 11:19:02,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 11:19:02,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 11:19:02,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 11:19:02,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 11:19:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-22 11:19:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-22 11:19:02,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:19:02,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-22 11:19:02,844 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 11:19:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:19:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-22 11:19:02,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:19:02,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810176387] [2019-11-22 11:19:02,863 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 11:19:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 11:19:02,993 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 11:19:02,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 11:19:03,117 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 11:19:03,117 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 11:19:06,174 WARN L192 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-22 11:19:06,202 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 11:19:06,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810176387] [2019-11-22 11:19:06,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 11:19:06,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-22 11:19:06,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057614433] [2019-11-22 11:19:06,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-22 11:19:06,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 11:19:06,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-22 11:19:06,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-22 11:19:06,221 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-22 11:19:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 11:19:24,683 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-22 11:19:24,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 11:19:24,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-22 11:19:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 11:19:24,694 INFO L225 Difference]: With dead ends: 67 [2019-11-22 11:19:24,694 INFO L226 Difference]: Without dead ends: 34 [2019-11-22 11:19:24,698 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-22 11:19:24,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-22 11:19:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-22 11:19:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-22 11:19:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-22 11:19:24,735 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-22 11:19:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 11:19:24,735 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-22 11:19:24,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-22 11:19:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-22 11:19:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-22 11:19:24,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:19:24,737 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-22 11:19:24,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-22 11:19:24,954 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 11:19:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:19:24,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-22 11:19:24,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:19:24,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488016836] [2019-11-22 11:19:24,957 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 11:19:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 11:19:26,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-22 11:19:26,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 11:19:26,836 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 11:19:26,837 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-22 11:19:42,635 WARN L192 SmtUtils]: Spent 3.25 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-22 11:19:43,223 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 11:19:43,769 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 11:19:43,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488016836] [2019-11-22 11:19:43,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-22 11:19:43,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-22 11:19:43,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372860506] [2019-11-22 11:19:43,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-22 11:19:43,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-22 11:19:43,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-22 11:19:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2019-11-22 11:19:43,773 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-22 11:19:50,694 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-22 11:20:03,575 WARN L192 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-22 11:20:14,208 WARN L192 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-22 11:20:31,674 WARN L192 SmtUtils]: Spent 13.82 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-22 11:21:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 11:21:09,473 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-22 11:21:09,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-22 11:21:09,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-22 11:21:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 11:21:09,475 INFO L225 Difference]: With dead ends: 33 [2019-11-22 11:21:09,475 INFO L226 Difference]: Without dead ends: 30 [2019-11-22 11:21:09,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 62.4s TimeCoverageRelationStatistics Valid=43, Invalid=88, Unknown=5, NotChecked=20, Total=156 [2019-11-22 11:21:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-22 11:21:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-22 11:21:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-22 11:21:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-22 11:21:09,485 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-22 11:21:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 11:21:09,485 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-22 11:21:09,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-22 11:21:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-22 11:21:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-22 11:21:09,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 11:21:09,486 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 11:21:09,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-22 11:21:09,694 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 11:21:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 11:21:09,695 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-22 11:21:09,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-22 11:21:09,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091684413] [2019-11-22 11:21:09,697 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 11:21:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:21:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-22 11:21:12,466 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-22 11:21:12,467 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-22 11:21:12,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-22 11:21:12,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:21:12 BoogieIcfgContainer [2019-11-22 11:21:12,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 11:21:12,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 11:21:12,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 11:21:12,689 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 11:21:12,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:19:02" (3/4) ... [2019-11-22 11:21:12,692 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-22 11:21:12,730 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 11:21:12,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 11:21:12,732 INFO L168 Benchmark]: Toolchain (without parser) took 140581.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 960.4 MB in the beginning and 999.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 89.1 MB. Max. memory is 11.5 GB. [2019-11-22 11:21:12,733 INFO L168 Benchmark]: CDTParser took 0.24 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 11:21:12,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-22 11:21:12,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-22 11:21:12,735 INFO L168 Benchmark]: Boogie Preprocessor took 32.32 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 11:21:12,736 INFO L168 Benchmark]: RCFGBuilder took 10198.18 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-11-22 11:21:12,737 INFO L168 Benchmark]: TraceAbstraction took 129936.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.2 MB in the end (delta: 96.7 MB). Peak memory consumption was 96.7 MB. Max. memory is 11.5 GB. [2019-11-22 11:21:12,738 INFO L168 Benchmark]: Witness Printer took 42.37 ms. Allocated memory is still 1.2 GB. Free memory is still 999.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 11:21:12,742 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 263.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 102.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.32 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 10198.18 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 129936.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.2 MB in the end (delta: 96.7 MB). Peak memory consumption was 96.7 MB. Max. memory is 11.5 GB. * Witness Printer took 42.37 ms. Allocated memory is still 1.2 GB. Free memory is still 999.2 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: 129.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 104.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 42 SDslu, 79 SDs, 0 SdLazy, 84 SolverSat, 25 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 56.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 65.7s 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, 2.3s SatisfiabilityAnalysisTime, 21.0s 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...