./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/recursive/recHanoi02-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:24:21,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:21,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:21,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:21,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:21,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:21,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:21,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:21,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:21,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:21,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:21,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:21,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:21,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:21,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:21,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:21,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:21,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:21,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:21,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:21,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:21,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:21,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:21,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:21,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:21,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:21,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:21,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:21,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:21,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:21,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:21,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:21,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:21,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:21,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:21,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:21,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:21,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:21,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:21,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:21,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:21,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:24:21,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:21,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:21,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:21,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:21,897 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:21,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:21,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:24:21,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:21,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:21,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:24:21,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:21,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:21,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:21,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:21,899 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:21,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:24:21,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:21,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:21,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:21,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:21,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:21,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:21,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:21,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:21,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:21,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:21,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:21,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:21,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:21,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:21,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:21,903 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 ! overflow) ) 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 -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2020-07-29 01:24:22,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:22,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:22,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:22,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:22,229 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:22,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi02-2.c [2020-07-29 01:24:22,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eefdf107/4a0ff6ebe56240158d39beb8f6daf302/FLAGf70145e18 [2020-07-29 01:24:22,709 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:22,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi02-2.c [2020-07-29 01:24:22,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eefdf107/4a0ff6ebe56240158d39beb8f6daf302/FLAGf70145e18 [2020-07-29 01:24:23,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eefdf107/4a0ff6ebe56240158d39beb8f6daf302 [2020-07-29 01:24:23,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:23,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:23,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:23,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:23,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:23,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5b9704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23, skipping insertion in model container [2020-07-29 01:24:23,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:23,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:23,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:23,348 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:23,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:23,394 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:23,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23 WrapperNode [2020-07-29 01:24:23,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:23,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:23,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:23,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:23,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:23,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:23,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:23,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:23,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (1/1) ... [2020-07-29 01:24:23,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:23,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:23,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:23,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:23,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (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 [2020-07-29 01:24:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-29 01:24:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-29 01:24:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:24,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:24,091 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:24:24,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:24 BoogieIcfgContainer [2020-07-29 01:24:24,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:24,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:24,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:24,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:24,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:23" (1/3) ... [2020-07-29 01:24:24,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7968ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:24, skipping insertion in model container [2020-07-29 01:24:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:23" (2/3) ... [2020-07-29 01:24:24,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7968ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:24, skipping insertion in model container [2020-07-29 01:24:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:24" (3/3) ... [2020-07-29 01:24:24,107 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-07-29 01:24:24,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:24,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-29 01:24:24,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-29 01:24:24,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:24,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:24,175 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:24,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:24,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:24,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:24,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:24,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-29 01:24:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:24:24,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:24,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:24:24,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2020-07-29 01:24:24,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:24,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269581181] [2020-07-29 01:24:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:24,445 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} havoc main_#res;havoc main_#t~nondet1, main_#t~ret2, main_~n~0, main_~result~0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; {30#true} is VALID [2020-07-29 01:24:24,447 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} assume !(main_~n~0 < 1 || main_~n~0 > 31); {32#(<= ULTIMATE.start_main_~n~0 31)} is VALID [2020-07-29 01:24:24,448 INFO L263 TraceCheckUtils]: 2: Hoare triple {32#(<= ULTIMATE.start_main_~n~0 31)} call main_#t~ret2 := hanoi(main_~n~0); {33#(<= |hanoi_#in~n| 31)} is VALID [2020-07-29 01:24:24,450 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#(<= |hanoi_#in~n| 31)} ~n := #in~n; {34#(<= hanoi_~n 31)} is VALID [2020-07-29 01:24:24,451 INFO L280 TraceCheckUtils]: 4: Hoare triple {34#(<= hanoi_~n 31)} assume !(1 == ~n); {34#(<= hanoi_~n 31)} is VALID [2020-07-29 01:24:24,452 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#(<= hanoi_~n 31)} assume !(~n - 1 <= 2147483647); {31#false} is VALID [2020-07-29 01:24:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:24,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269581181] [2020-07-29 01:24:24,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:24,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:24:24,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8478032] [2020-07-29 01:24:24,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-29 01:24:24,465 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:24,470 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:24:24,485 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:24,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:24:24,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:24:24,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:24,498 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-07-29 01:24:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:24,800 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-29 01:24:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:24:24,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-29 01:24:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2020-07-29 01:24:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2020-07-29 01:24:24,815 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 34 transitions. [2020-07-29 01:24:24,886 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:24,898 INFO L225 Difference]: With dead ends: 33 [2020-07-29 01:24:24,898 INFO L226 Difference]: Without dead ends: 20 [2020-07-29 01:24:24,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-29 01:24:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-29 01:24:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-29 01:24:24,944 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:24,945 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-29 01:24:24,946 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-29 01:24:24,946 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-29 01:24:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:24,952 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-29 01:24:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-29 01:24:24,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:24,953 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:24,954 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-29 01:24:24,954 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-29 01:24:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:24,958 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-29 01:24:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-29 01:24:24,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:24,960 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:24,960 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:24,960 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-29 01:24:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-29 01:24:24,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2020-07-29 01:24:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:24,966 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-29 01:24:24,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:24:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-29 01:24:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:24:24,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:24,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:24,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:24,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2020-07-29 01:24:24,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:24,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605082451] [2020-07-29 01:24:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:24,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:24:24,981 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:24:24,988 INFO L168 Benchmark]: Toolchain (without parser) took 1859.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -114.8 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:24,989 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:24,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.14 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:24,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:24,992 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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. [2020-07-29 01:24:24,993 INFO L168 Benchmark]: RCFGBuilder took 528.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:24,994 INFO L168 Benchmark]: TraceAbstraction took 888.16 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: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:24,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.14 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 141.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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 528.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 888.16 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: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...