./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/n.c40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/loops/n.c40.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 e954357898f010ea28e7deb5d5a1ae907cf090e4 .......................................................................................................................................................................................................................................................................................................................... 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/loops/n.c40.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 e954357898f010ea28e7deb5d5a1ae907cf090e4 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:03:41,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:41,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:41,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:03:41,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:03:41,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:03:41,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:03:41,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:03:41,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:03:41,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:03:41,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:03:41,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:03:41,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:03:41,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:03:41,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:03:41,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:03:41,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:03:41,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:03:41,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:03:41,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:03:41,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:03:41,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:03:41,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:03:41,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:03:41,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:03:41,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:03:41,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:03:41,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:03:41,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:03:41,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:03:41,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:41,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:41,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:41,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:41,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:41,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:41,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:41,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:41,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:41,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:41,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:41,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:03:41,482 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:41,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:41,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:41,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:41,489 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:41,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:41,490 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:41,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:03:41,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:41,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:41,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:41,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:41,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:41,493 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:41,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:41,494 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:41,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:41,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:41,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:41,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:41,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:41,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:41,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:41,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:41,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:41,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:03:41,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:03:41,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:41,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:41,502 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 -> e954357898f010ea28e7deb5d5a1ae907cf090e4 [2019-11-28 17:03:41,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:41,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:41,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:41,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:41,828 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:41,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c40.c [2019-11-28 17:03:41,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9a33a0e/139f6512f3bb4d1486a9dbc3caa5c502/FLAG359fd0d93 [2019-11-28 17:03:42,415 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:42,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c40.c [2019-11-28 17:03:42,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9a33a0e/139f6512f3bb4d1486a9dbc3caa5c502/FLAG359fd0d93 [2019-11-28 17:03:42,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9a33a0e/139f6512f3bb4d1486a9dbc3caa5c502 [2019-11-28 17:03:42,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:42,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:42,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:42,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:42,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:42,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:42" (1/1) ... [2019-11-28 17:03:42,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da74d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:42, skipping insertion in model container [2019-11-28 17:03:42,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:42" (1/1) ... [2019-11-28 17:03:42,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:42,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:43,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:43,063 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:43,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:43,105 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43 WrapperNode [2019-11-28 17:03:43,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:43,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:43,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:43,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:43,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:43,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:43,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:43,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:43,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... [2019-11-28 17:03:43,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:43,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:43,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:43,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:43,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:03:43,526 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:43,526 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 17:03:43,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:43 BoogieIcfgContainer [2019-11-28 17:03:43,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:43,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:43,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:43,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:43,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:42" (1/3) ... [2019-11-28 17:03:43,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497af90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:43, skipping insertion in model container [2019-11-28 17:03:43,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:43" (2/3) ... [2019-11-28 17:03:43,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497af90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:43, skipping insertion in model container [2019-11-28 17:03:43,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:43" (3/3) ... [2019-11-28 17:03:43,538 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-11-28 17:03:43,550 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:43,559 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:43,592 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:43,624 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:43,625 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:43,625 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:43,625 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:43,625 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:43,626 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:43,626 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:43,626 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 17:03:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:03:43,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:43,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:43,651 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2019-11-28 17:03:43,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:43,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074360645] [2019-11-28 17:03:43,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:43,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074360645] [2019-11-28 17:03:43,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:43,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:03:43,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666749122] [2019-11-28 17:03:43,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:03:43,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:03:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:43,858 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-28 17:03:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:43,872 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-28 17:03:43,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:03:43,874 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-28 17:03:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:43,882 INFO L225 Difference]: With dead ends: 22 [2019-11-28 17:03:43,883 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:03:43,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:03:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:03:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:03:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:03:43,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:03:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:43,918 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:03:43,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:03:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:03:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:03:43,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:43,919 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:43,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2019-11-28 17:03:43,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:43,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045194651] [2019-11-28 17:03:43,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:43,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045194651] [2019-11-28 17:03:43,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:43,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:03:43,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947814607] [2019-11-28 17:03:43,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:03:43,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:43,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:03:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:03:43,997 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2019-11-28 17:03:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:44,037 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-28 17:03:44,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:03:44,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 17:03:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:44,039 INFO L225 Difference]: With dead ends: 16 [2019-11-28 17:03:44,039 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:03:44,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:03:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:03:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 17:03:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:03:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 17:03:44,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-28 17:03:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:44,045 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 17:03:44,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:03:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 17:03:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:03:44,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:44,046 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:44,046 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2019-11-28 17:03:44,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:44,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117476286] [2019-11-28 17:03:44,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:44,106 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1315) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1196) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:573) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:300) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:202) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-28 17:03:44,114 INFO L168 Benchmark]: Toolchain (without parser) took 1358.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -95.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:44,115 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. [2019-11-28 17:03:44,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.45 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. [2019-11-28 17:03:44,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:44,118 INFO L168 Benchmark]: Boogie Preprocessor took 37.54 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:44,119 INFO L168 Benchmark]: RCFGBuilder took 283.93 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:44,120 INFO L168 Benchmark]: TraceAbstraction took 581.59 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:44,125 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 348.45 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 98.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.54 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 283.93 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 581.59 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 17:03:46,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:46,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:46,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:03:46,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:03:46,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:03:46,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:03:46,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:03:46,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:03:46,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:03:46,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:03:46,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:03:46,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:03:46,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:03:46,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:03:46,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:03:46,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:03:46,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:03:46,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:03:46,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:03:46,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:03:46,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:03:46,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:03:46,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:03:46,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:03:46,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:03:46,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:03:46,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:03:46,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:03:46,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:03:46,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:46,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:46,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:46,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:46,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:46,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:46,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:46,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:46,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:46,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:46,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:46,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 17:03:46,194 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:46,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:46,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:46,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:46,201 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:46,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:46,201 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:46,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:46,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:46,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:46,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:46,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:46,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 17:03:46,205 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 17:03:46,205 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:46,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:46,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:46,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:46,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:46,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:46,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:46,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:46,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:46,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:46,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:46,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:46,211 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 17:03:46,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 17:03:46,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:46,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:46,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 17:03:46,213 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 -> e954357898f010ea28e7deb5d5a1ae907cf090e4 [2019-11-28 17:03:46,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:46,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:46,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:46,548 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:46,549 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:46,550 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c40.c [2019-11-28 17:03:46,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c72ba9/f1df9f21170a4895a8de61013e550873/FLAG94cbe011b [2019-11-28 17:03:47,036 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:47,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c40.c [2019-11-28 17:03:47,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c72ba9/f1df9f21170a4895a8de61013e550873/FLAG94cbe011b [2019-11-28 17:03:47,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62c72ba9/f1df9f21170a4895a8de61013e550873 [2019-11-28 17:03:47,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:47,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:47,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:47,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:47,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:47,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550650fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47, skipping insertion in model container [2019-11-28 17:03:47,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:47,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:47,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:47,692 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:47,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:47,734 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:47,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47 WrapperNode [2019-11-28 17:03:47,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:47,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:47,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:47,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:47,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:47,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:47,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:47,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:47,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (1/1) ... [2019-11-28 17:03:47,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:47,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:47,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:47,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:47,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (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 [2019-11-28 17:03:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-28 17:03:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-28 17:03:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:03:48,133 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:48,134 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 17:03:48,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:48 BoogieIcfgContainer [2019-11-28 17:03:48,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:48,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:48,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:48,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:48,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:47" (1/3) ... [2019-11-28 17:03:48,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433c92fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:48, skipping insertion in model container [2019-11-28 17:03:48,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:47" (2/3) ... [2019-11-28 17:03:48,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433c92fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:48, skipping insertion in model container [2019-11-28 17:03:48,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:48" (3/3) ... [2019-11-28 17:03:48,143 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-11-28 17:03:48,152 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:48,159 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:48,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:48,188 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:48,189 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:48,189 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:48,189 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:48,189 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:48,189 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:48,189 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:48,190 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 17:03:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:03:48,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:48,208 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:48,208 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493552, now seen corresponding path program 1 times [2019-11-28 17:03:48,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:48,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761096347] [2019-11-28 17:03:48,228 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 [2019-11-28 17:03:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:48,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 17:03:48,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:48,320 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:48,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761096347] [2019-11-28 17:03:48,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 17:03:48,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847167582] [2019-11-28 17:03:48,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:03:48,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:03:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:48,359 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-28 17:03:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:48,380 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-28 17:03:48,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:03:48,381 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-28 17:03:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:48,391 INFO L225 Difference]: With dead ends: 22 [2019-11-28 17:03:48,391 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:03:48,395 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:03:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:03:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:03:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:03:48,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:03:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:48,430 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:03:48,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:03:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:03:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:03:48,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:48,431 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:48,642 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 17:03:48,642 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:48,643 INFO L82 PathProgramCache]: Analyzing trace with hash 177687787, now seen corresponding path program 1 times [2019-11-28 17:03:48,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:48,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679853645] [2019-11-28 17:03:48,646 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 [2019-11-28 17:03:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:48,691 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 17:03:48,693 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:48,721 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:48,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679853645] [2019-11-28 17:03:48,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:48,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-28 17:03:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566019711] [2019-11-28 17:03:48,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:03:48,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:03:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:48,759 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-11-28 17:03:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:48,800 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-28 17:03:48,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:03:48,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 17:03:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:48,802 INFO L225 Difference]: With dead ends: 16 [2019-11-28 17:03:48,802 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:03:48,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:03:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 17:03:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:03:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 17:03:48,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-28 17:03:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:48,808 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 17:03:48,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:03:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 17:03:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:03:48,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:48,809 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:49,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 17:03:49,020 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 468121936, now seen corresponding path program 1 times [2019-11-28 17:03:49,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:49,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205238651] [2019-11-28 17:03:49,023 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 [2019-11-28 17:03:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:49,077 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 17:03:49,080 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:49,245 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 17:03:49,246 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 41 [2019-11-28 17:03:49,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,273 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 17:03:49,338 INFO L614 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2019-11-28 17:03:49,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,350 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 17:03:49,351 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:35 [2019-11-28 17:03:49,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 17:03:49,503 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-11-28 17:03:49,504 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 17:03:49,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 17:03:49,531 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 17:03:49,532 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 44 [2019-11-28 17:03:49,534 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 17:03:49,657 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2019-11-28 17:03:49,658 INFO L614 ElimStorePlain]: treesize reduction 16, result has 82.8 percent of original size [2019-11-28 17:03:49,660 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-28 17:03:49,660 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:77 [2019-11-28 17:03:49,773 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-28 17:03:49,808 INFO L343 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2019-11-28 17:03:49,809 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 31 [2019-11-28 17:03:49,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,815 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 17:03:49,842 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 17:03:49,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:49,848 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-28 17:03:49,848 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:32 [2019-11-28 17:03:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:49,917 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:50,306 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 17:03:50,307 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-11-28 17:03:50,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:50,313 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-11-28 17:03:50,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205238651] [2019-11-28 17:03:50,320 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@63ecdac6 [2019-11-28 17:03:50,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [844282883] [2019-11-28 17:03:50,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-28 17:03:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:50,414 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 17:03:50,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:50,419 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@63ecdac6 [2019-11-28 17:03:50,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629927256] [2019-11-28 17:03:50,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:50,477 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 17:03:50,479 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:50,479 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@63ecdac6 [2019-11-28 17:03:50,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:50,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-11-28 17:03:50,480 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-11-28 17:03:50,480 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:03:51,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:51,119 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-11-28 17:03:51,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:03:51 BoogieIcfgContainer [2019-11-28 17:03:51,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:03:51,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:03:51,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:03:51,121 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:03:51,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:48" (3/4) ... [2019-11-28 17:03:51,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 17:03:51,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:03:51,130 INFO L168 Benchmark]: Toolchain (without parser) took 3684.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 957.7 MB in the beginning and 984.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 117.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:51,131 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. [2019-11-28 17:03:51,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:51,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:51,138 INFO L168 Benchmark]: Boogie Preprocessor took 28.11 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. [2019-11-28 17:03:51,139 INFO L168 Benchmark]: RCFGBuilder took 270.02 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:51,140 INFO L168 Benchmark]: TraceAbstraction took 2984.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.0 MB in the end (delta: 130.9 MB). Peak memory consumption was 130.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:51,140 INFO L168 Benchmark]: Witness Printer took 5.93 ms. Allocated memory is still 1.2 GB. Free memory is still 984.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:03:51,144 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 287.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 270.02 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2984.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.0 MB in the end (delta: 130.9 MB). Peak memory consumption was 130.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.93 ms. Allocated memory is still 1.2 GB. Free memory is still 984.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L5] char x[100], y[100]; [L6] int i,j,k; [L9] k = __VERIFIER_nondet_int() [L11] i = 0 [L12] EXPR x[i] [L12] COND TRUE x[i] != 0 [L13] EXPR x[i] [L13] y[i] = x[i] [L14] i++ [L12] EXPR x[i] [L12] COND FALSE !(x[i] != 0) [L16] y[i] = 0 [L18] COND TRUE k >= 0 && k < i [L19] EXPR y[k] [L19] COND TRUE y[k] == 0 [L20] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNKNOWN, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 4 QuantifiedInterpolants, 478 SizeOfPredicates, 3 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 4 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...