./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/ludcmp.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/ludcmp.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 32bec6c4f79c2e7c076e1f90ef84b3b02cfe5535 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/ludcmp.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 32bec6c4f79c2e7c076e1f90ef84b3b02cfe5535 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-11-28 17:03:24,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:24,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:24,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:03:24,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:03:24,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:03:24,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:03:24,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:03:24,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:03:24,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:03:24,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:03:24,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:03:24,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:03:24,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:03:24,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:03:24,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:03:24,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:03:24,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:03:24,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:03:24,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:03:24,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:03:24,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:03:24,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:03:24,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:03:24,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:03:24,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:03:24,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:03:24,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:03:24,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:03:24,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:03:24,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:24,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:24,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:24,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:24,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:24,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:24,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:24,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:24,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:24,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:24,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:24,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:03:24,499 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:24,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:24,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:24,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:24,502 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:24,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:24,502 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:24,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:03:24,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:24,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:24,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:24,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:24,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:24,505 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:24,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:24,506 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:24,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:24,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:24,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:24,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:24,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:24,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:24,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:24,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:24,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:24,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:03:24,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:03:24,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:24,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:24,509 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 -> 32bec6c4f79c2e7c076e1f90ef84b3b02cfe5535 [2019-11-28 17:03:24,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:24,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:24,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:24,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:24,800 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:24,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/ludcmp.c [2019-11-28 17:03:24,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76eebfac6/6f1713731a2e475484adc47e6c171404/FLAG908c25526 [2019-11-28 17:03:25,265 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:25,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/ludcmp.c [2019-11-28 17:03:25,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76eebfac6/6f1713731a2e475484adc47e6c171404/FLAG908c25526 [2019-11-28 17:03:25,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76eebfac6/6f1713731a2e475484adc47e6c171404 [2019-11-28 17:03:25,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:25,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:25,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:25,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:25,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:25,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:25" (1/1) ... [2019-11-28 17:03:25,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee01756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:25, skipping insertion in model container [2019-11-28 17:03:25,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:25" (1/1) ... [2019-11-28 17:03:25,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:25,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:25,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:25,946 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:26,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:26,079 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:26,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26 WrapperNode [2019-11-28 17:03:26,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:26,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:26,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:26,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:26,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:26,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:26,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:26,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:26,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (1/1) ... [2019-11-28 17:03:26,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:26,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:26,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:26,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:26,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (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 17:03:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 17:03:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 17:03:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:03:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:03:26,839 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:26,839 INFO L287 CfgBuilder]: Removed 21 assume(true) statements. [2019-11-28 17:03:26,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:26 BoogieIcfgContainer [2019-11-28 17:03:26,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:26,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:26,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:26,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:26,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:25" (1/3) ... [2019-11-28 17:03:26,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e267b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:26, skipping insertion in model container [2019-11-28 17:03:26,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:26" (2/3) ... [2019-11-28 17:03:26,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e267b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:26, skipping insertion in model container [2019-11-28 17:03:26,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:26" (3/3) ... [2019-11-28 17:03:26,848 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2019-11-28 17:03:26,858 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:26,866 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:26,877 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:26,897 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:26,898 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:26,898 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:26,898 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:26,898 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:26,898 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:26,898 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:26,898 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-28 17:03:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:03:26,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:26,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:26,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:26,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2019-11-28 17:03:26,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:26,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241181789] [2019-11-28 17:03:26,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:27,103 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 17:03:27,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241181789] [2019-11-28 17:03:27,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:27,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:03:27,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207904592] [2019-11-28 17:03:27,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:03:27,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:03:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:27,127 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2019-11-28 17:03:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:27,193 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2019-11-28 17:03:27,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:03:27,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 17:03:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:27,205 INFO L225 Difference]: With dead ends: 102 [2019-11-28 17:03:27,205 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 17:03:27,212 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:03:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 17:03:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-11-28 17:03:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 17:03:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 17:03:27,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2019-11-28 17:03:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:27,251 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 17:03:27,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:03:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 17:03:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:03:27,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:27,252 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:27,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2019-11-28 17:03:27,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:27,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539193491] [2019-11-28 17:03:27,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:27,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539193491] [2019-11-28 17:03:27,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639605572] [2019-11-28 17:03:27,353 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 [2019-11-28 17:03:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:27,435 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:03:27,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:27,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:27,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-28 17:03:27,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092418887] [2019-11-28 17:03:27,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:03:27,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:27,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:03:27,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:03:27,502 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2019-11-28 17:03:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:27,660 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2019-11-28 17:03:27,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 17:03:27,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-28 17:03:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:27,664 INFO L225 Difference]: With dead ends: 52 [2019-11-28 17:03:27,664 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 17:03:27,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:03:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 17:03:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2019-11-28 17:03:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 17:03:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-28 17:03:27,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2019-11-28 17:03:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:27,676 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 17:03:27,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:03:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-28 17:03:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 17:03:27,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:27,679 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:27,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:27,883 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1891735812, now seen corresponding path program 1 times [2019-11-28 17:03:27,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:27,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122070300] [2019-11-28 17:03:27,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:28,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122070300] [2019-11-28 17:03:28,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893717274] [2019-11-28 17:03:28,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:28,120 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 17:03:28,122 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:28,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:28,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-28 17:03:28,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939007062] [2019-11-28 17:03:28,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 17:03:28,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:28,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 17:03:28,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:03:28,271 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 10 states. [2019-11-28 17:03:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:28,448 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2019-11-28 17:03:28,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 17:03:28,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-28 17:03:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:28,449 INFO L225 Difference]: With dead ends: 64 [2019-11-28 17:03:28,449 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 17:03:28,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:03:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 17:03:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2019-11-28 17:03:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 17:03:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-11-28 17:03:28,458 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 15 [2019-11-28 17:03:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:28,458 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-28 17:03:28,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 17:03:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-11-28 17:03:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 17:03:28,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:28,460 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:28,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:28,663 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1388100565, now seen corresponding path program 2 times [2019-11-28 17:03:28,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:28,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291163548] [2019-11-28 17:03:28,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:28,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291163548] [2019-11-28 17:03:28,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476773074] [2019-11-28 17:03:28,807 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:28,863 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:03:28,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:03:28,864 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 17:03:28,866 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:28,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:28,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-28 17:03:28,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244653318] [2019-11-28 17:03:28,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 17:03:28,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:28,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 17:03:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-28 17:03:28,958 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 12 states. [2019-11-28 17:03:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:29,163 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-11-28 17:03:29,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 17:03:29,164 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-28 17:03:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:29,165 INFO L225 Difference]: With dead ends: 76 [2019-11-28 17:03:29,165 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 17:03:29,166 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-11-28 17:03:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 17:03:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2019-11-28 17:03:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 17:03:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2019-11-28 17:03:29,174 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 19 [2019-11-28 17:03:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:29,175 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2019-11-28 17:03:29,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 17:03:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2019-11-28 17:03:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 17:03:29,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:29,176 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:29,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:29,381 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 756876242, now seen corresponding path program 3 times [2019-11-28 17:03:29,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:29,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467138583] [2019-11-28 17:03:29,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:29,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467138583] [2019-11-28 17:03:29,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617053546] [2019-11-28 17:03:29,726 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:29,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 17:03:29,786 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:03:29,787 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 17:03:29,789 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:29,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:29,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2019-11-28 17:03:29,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590129736] [2019-11-28 17:03:29,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 17:03:29,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:29,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 17:03:29,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:03:29,922 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 17 states. [2019-11-28 17:03:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:33,120 INFO L93 Difference]: Finished difference Result 249 states and 311 transitions. [2019-11-28 17:03:33,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-11-28 17:03:33,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2019-11-28 17:03:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:33,123 INFO L225 Difference]: With dead ends: 249 [2019-11-28 17:03:33,123 INFO L226 Difference]: Without dead ends: 225 [2019-11-28 17:03:33,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1280, Invalid=4572, Unknown=0, NotChecked=0, Total=5852 [2019-11-28 17:03:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2019-11-28 17:03:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 126. [2019-11-28 17:03:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-28 17:03:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 160 transitions. [2019-11-28 17:03:33,143 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 160 transitions. Word has length 23 [2019-11-28 17:03:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:33,144 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 160 transitions. [2019-11-28 17:03:33,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 17:03:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 160 transitions. [2019-11-28 17:03:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-28 17:03:33,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:33,145 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:33,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:33,357 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1523542023, now seen corresponding path program 4 times [2019-11-28 17:03:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:33,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414869076] [2019-11-28 17:03:33,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:33,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414869076] [2019-11-28 17:03:33,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144528402] [2019-11-28 17:03:33,505 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 17:03:33,553 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 17:03:33,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:03:33,554 INFO L264 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 17:03:33,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:33,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:33,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-28 17:03:33,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981159071] [2019-11-28 17:03:33,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 17:03:33,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:33,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 17:03:33,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2019-11-28 17:03:33,646 INFO L87 Difference]: Start difference. First operand 126 states and 160 transitions. Second operand 16 states. [2019-11-28 17:03:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:33,927 INFO L93 Difference]: Finished difference Result 279 states and 356 transitions. [2019-11-28 17:03:33,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 17:03:33,927 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2019-11-28 17:03:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:33,929 INFO L225 Difference]: With dead ends: 279 [2019-11-28 17:03:33,929 INFO L226 Difference]: Without dead ends: 192 [2019-11-28 17:03:33,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2019-11-28 17:03:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-11-28 17:03:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 138. [2019-11-28 17:03:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-28 17:03:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 174 transitions. [2019-11-28 17:03:33,945 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 174 transitions. Word has length 27 [2019-11-28 17:03:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:33,945 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 174 transitions. [2019-11-28 17:03:33,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 17:03:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 174 transitions. [2019-11-28 17:03:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-28 17:03:33,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:33,946 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:34,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:34,155 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:34,155 INFO L82 PathProgramCache]: Analyzing trace with hash 58704032, now seen corresponding path program 5 times [2019-11-28 17:03:34,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:34,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340197504] [2019-11-28 17:03:34,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:03:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:03:34,242 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:03:34,242 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:03:34,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:03:34 BoogieIcfgContainer [2019-11-28 17:03:34,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:03:34,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:03:34,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:03:34,331 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:03:34,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:26" (3/4) ... [2019-11-28 17:03:34,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 17:03:34,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:03:34,346 INFO L168 Benchmark]: Toolchain (without parser) took 8656.42 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 126.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:34,346 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:03:34,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:34,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.80 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 17:03:34,351 INFO L168 Benchmark]: Boogie Preprocessor took 77.13 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. [2019-11-28 17:03:34,353 INFO L168 Benchmark]: RCFGBuilder took 603.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:34,354 INFO L168 Benchmark]: TraceAbstraction took 7488.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 122.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.6 MB). Peak memory consumption was 127.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:03:34,356 INFO L168 Benchmark]: Witness Printer took 10.45 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:03:34,360 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 386.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.13 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 603.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7488.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 122.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.6 MB). Peak memory consumption was 127.3 MB. Max. memory is 11.5 GB. * Witness Printer took 10.45 ms. Allocated memory is still 1.3 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: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 96, overapproximation of someBinaryArithmeticDOUBLEoperation at line 98. Possible FailurePath: [L69] double a[50][50], b[50], x[50]; VAL [a={3:0}, b={2:0}, x={4:0}] [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 VAL [a={3:0}, b={2:0}, x={4:0}] [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND FALSE !(i == j) VAL [a={3:0}, b={2:0}, x={4:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND FALSE !(i == j) VAL [a={3:0}, b={2:0}, x={4:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND FALSE !(i == j) VAL [a={3:0}, b={2:0}, x={4:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND FALSE !(i == j) VAL [a={3:0}, b={2:0}, x={4:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={3:0}, b={2:0}, x={4:0}] [L97] COND FALSE !(i == j) VAL [a={3:0}, b={2:0}, x={4:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={3:0}, b={2:0}, x={4:0}] [L94] COND FALSE !(j <= n) VAL [a={3:0}, b={2:0}, x={4:0}] [L4] COND TRUE !(cond) VAL [a={3:0}, b={2:0}, x={4:0}] [L5] __VERIFIER_error() VAL [a={3:0}, b={2:0}, x={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.3s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 899 SDslu, 318 SDs, 0 SdLazy, 639 SolverSat, 288 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=6, 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, 6 MinimizatonAttempts, 192 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 28854 SizeOfPredicates, 10 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/190 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 0.1.25-f470102 [2019-11-28 17:03:36,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:36,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:36,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-28 17:03:36,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:36,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:36,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:36,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:36,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:36,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:36,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:36,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:36,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:36,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:36,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:36,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 17:03:36,413 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:36,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:36,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:36,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:36,415 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:36,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:36,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:36,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:36,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:36,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:36,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:36,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:36,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 17:03:36,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 17:03:36,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:36,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:36,418 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:36,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:36,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:36,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:36,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:36,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:36,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:36,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:36,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:36,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:36,420 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 17:03:36,420 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 17:03:36,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:36,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:36,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 17:03:36,421 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 -> 32bec6c4f79c2e7c076e1f90ef84b3b02cfe5535 [2019-11-28 17:03:36,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:36,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:36,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:36,766 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:36,767 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:36,767 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/ludcmp.c [2019-11-28 17:03:36,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d252bc315/bcd44aa85d3e4288a90a5d8ff28b37a4/FLAGf2134990b [2019-11-28 17:03:37,218 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:37,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/ludcmp.c [2019-11-28 17:03:37,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d252bc315/bcd44aa85d3e4288a90a5d8ff28b37a4/FLAGf2134990b [2019-11-28 17:03:37,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d252bc315/bcd44aa85d3e4288a90a5d8ff28b37a4 [2019-11-28 17:03:37,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:37,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:37,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:37,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:37,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:37,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:37" (1/1) ... [2019-11-28 17:03:37,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bf092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:37, skipping insertion in model container [2019-11-28 17:03:37,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:37" (1/1) ... [2019-11-28 17:03:37,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:37,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:37,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:37,959 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:38,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:38,096 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:38,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38 WrapperNode [2019-11-28 17:03:38,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:38,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:38,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:38,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:38,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:38,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:38,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:38,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:38,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (1/1) ... [2019-11-28 17:03:38,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:38,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:38,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:38,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:38,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (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 17:03:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 17:03:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 17:03:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:03:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:03:50,626 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:50,626 INFO L287 CfgBuilder]: Removed 21 assume(true) statements. [2019-11-28 17:03:50,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:50 BoogieIcfgContainer [2019-11-28 17:03:50,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:50,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:50,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:50,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:50,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:37" (1/3) ... [2019-11-28 17:03:50,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42039d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:50, skipping insertion in model container [2019-11-28 17:03:50,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:38" (2/3) ... [2019-11-28 17:03:50,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42039d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:50, skipping insertion in model container [2019-11-28 17:03:50,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:50" (3/3) ... [2019-11-28 17:03:50,636 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2019-11-28 17:03:50,646 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:50,653 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:50,666 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:50,689 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:50,689 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:50,689 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:50,689 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:50,690 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:50,690 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:50,690 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:50,690 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-28 17:03:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:03:50,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:50,707 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:50,708 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2019-11-28 17:03:50,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:50,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272388176] [2019-11-28 17:03:50,726 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 17:03:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:50,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 17:03:50,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:50,854 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 17:03:50,855 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:50,876 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 17:03:50,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272388176] [2019-11-28 17:03:50,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:50,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 17:03:50,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735858747] [2019-11-28 17:03:50,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:03:50,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:03:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:03:50,900 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2019-11-28 17:03:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:51,400 INFO L93 Difference]: Finished difference Result 103 states and 162 transitions. [2019-11-28 17:03:51,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:03:51,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-28 17:03:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:51,423 INFO L225 Difference]: With dead ends: 103 [2019-11-28 17:03:51,423 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 17:03:51,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:03:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 17:03:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 17:03:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 17:03:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-28 17:03:51,463 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2019-11-28 17:03:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:51,464 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-28 17:03:51,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:03:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-28 17:03:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 17:03:51,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:51,466 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:51,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 17:03:51,674 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash 116728450, now seen corresponding path program 1 times [2019-11-28 17:03:51,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:51,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185806470] [2019-11-28 17:03:51,677 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 17:03:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:52,073 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:03:52,075 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:52,121 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:52,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185806470] [2019-11-28 17:03:52,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:52,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-28 17:03:52,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886216764] [2019-11-28 17:03:52,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:03:52,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:52,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:03:52,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:03:52,171 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 8 states. [2019-11-28 17:03:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:54,183 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2019-11-28 17:03:54,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:03:54,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-28 17:03:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:54,187 INFO L225 Difference]: With dead ends: 94 [2019-11-28 17:03:54,188 INFO L226 Difference]: Without dead ends: 78 [2019-11-28 17:03:54,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:03:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-28 17:03:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 47. [2019-11-28 17:03:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 17:03:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2019-11-28 17:03:54,223 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2019-11-28 17:03:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:54,225 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2019-11-28 17:03:54,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:03:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2019-11-28 17:03:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 17:03:54,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:54,227 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:54,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 17:03:54,443 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:54,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1891735812, now seen corresponding path program 1 times [2019-11-28 17:03:54,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:54,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915705979] [2019-11-28 17:03:54,445 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 17:03:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:54,752 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 17:03:54,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:54,798 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:54,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915705979] [2019-11-28 17:03:54,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:54,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-28 17:03:54,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929272293] [2019-11-28 17:03:54,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 17:03:54,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 17:03:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:03:54,873 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 10 states. [2019-11-28 17:03:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:56,362 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2019-11-28 17:03:56,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 17:03:56,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-28 17:03:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:56,373 INFO L225 Difference]: With dead ends: 121 [2019-11-28 17:03:56,373 INFO L226 Difference]: Without dead ends: 98 [2019-11-28 17:03:56,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:03:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-28 17:03:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-11-28 17:03:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-28 17:03:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2019-11-28 17:03:56,389 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 15 [2019-11-28 17:03:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:56,390 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2019-11-28 17:03:56,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 17:03:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2019-11-28 17:03:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-28 17:03:56,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:56,391 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:56,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 17:03:56,604 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -642360546, now seen corresponding path program 2 times [2019-11-28 17:03:56,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:03:56,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030733994] [2019-11-28 17:03:56,606 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 17:03:57,282 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:03:57,282 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:03:57,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 17:03:57,366 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 17:03:57,452 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 17:03:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 17:03:57,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030733994] [2019-11-28 17:03:57,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:57,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-28 17:03:57,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142032977] [2019-11-28 17:03:57,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 17:03:57,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 17:03:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 17:03:57,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-11-28 17:03:57,564 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 14 states. [2019-11-28 17:04:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:03,089 INFO L93 Difference]: Finished difference Result 448 states and 518 transitions. [2019-11-28 17:04:03,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-28 17:04:03,090 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2019-11-28 17:04:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:03,094 INFO L225 Difference]: With dead ends: 448 [2019-11-28 17:04:03,095 INFO L226 Difference]: Without dead ends: 374 [2019-11-28 17:04:03,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=460, Invalid=1100, Unknown=0, NotChecked=0, Total=1560 [2019-11-28 17:04:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2019-11-28 17:04:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 183. [2019-11-28 17:04:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-11-28 17:04:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2019-11-28 17:04:03,137 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 31 [2019-11-28 17:04:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:03,139 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2019-11-28 17:04:03,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 17:04:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2019-11-28 17:04:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-28 17:04:03,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:03,143 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:03,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 17:04:03,353 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 58704032, now seen corresponding path program 3 times [2019-11-28 17:04:03,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 17:04:03,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890893096] [2019-11-28 17:04:03,355 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 17:04:04,577 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-28 17:04:04,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-28 17:04:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:05,666 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 17:04:05,666 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:04:05,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 17:04:05,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:04:05 BoogieIcfgContainer [2019-11-28 17:04:05,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:04:05,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:04:05,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:04:05,933 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:04:05,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:50" (3/4) ... [2019-11-28 17:04:05,936 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:04:06,027 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:04:06,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:04:06,030 INFO L168 Benchmark]: Toolchain (without parser) took 28448.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,030 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:06,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.41 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 17:04:06,034 INFO L168 Benchmark]: Boogie Preprocessor took 48.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,035 INFO L168 Benchmark]: RCFGBuilder took 12428.64 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: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,035 INFO L168 Benchmark]: TraceAbstraction took 15303.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:06,036 INFO L168 Benchmark]: Witness Printer took 94.95 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 17:04:06,039 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 514.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 12428.64 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: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15303.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 94.95 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: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] double a[50][50], b[50], x[50]; VAL [a={2:0}, b={7:0}, x={3:0}] [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 VAL [a={2:0}, b={7:0}, x={3:0}] [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND FALSE !(i == j) VAL [a={2:0}, b={7:0}, x={3:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND FALSE !(i == j) VAL [a={2:0}, b={7:0}, x={3:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND FALSE !(i == j) VAL [a={2:0}, b={7:0}, x={3:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND FALSE !(i == j) VAL [a={2:0}, b={7:0}, x={3:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={2:0}, b={7:0}, x={3:0}] [L97] COND FALSE !(i == j) VAL [a={2:0}, b={7:0}, x={3:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={2:0}, b={7:0}, x={3:0}] [L94] COND FALSE !(j <= n) VAL [a={2:0}, b={7:0}, x={3:0}] [L4] COND TRUE !(cond) VAL [a={2:0}, b={7:0}, x={3:0}] [L5] __VERIFIER_error() VAL [a={2:0}, b={7:0}, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Result: UNSAFE, OverallTime: 15.1s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 612 SDslu, 243 SDs, 0 SdLazy, 476 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 11720 SizeOfPredicates, 8 NumberOfNonLiveVariables, 202 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 76/156 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...