./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Ackermann01-1.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- 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/termination-numeric/Ackermann01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 69d872c0500c15c11d149393bc821769e86dd3ec .................................................................................................................................................................................................................................................................................................................................................................................................. 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*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_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 01:24:01,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:01,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:01,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:01,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:01,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:01,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:01,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:01,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:01,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:01,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:01,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:01,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:01,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:01,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:01,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:01,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:01,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:01,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:01,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:01,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:01,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:01,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:01,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:01,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:01,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:01,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:01,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:01,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:01,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:01,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:01,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:01,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:01,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:01,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:01,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:01,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:01,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:01,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:01,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:01,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:01,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:24:01,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:01,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:01,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:01,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:01,174 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:01,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:01,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:01,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:01,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:01,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:01,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:01,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:01,176 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:01,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:01,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:01,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:01,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:01,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:01,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:01,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:01,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:01,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:01,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:01,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:01,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:01,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:01,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:01,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:01,180 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d872c0500c15c11d149393bc821769e86dd3ec [2020-07-29 01:24:01,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:01,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:01,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:01,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:01,510 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:01,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2020-07-29 01:24:01,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af767051/c35ba9c4144e436aa08b4c3d26c9bcb8/FLAGcd7936233 [2020-07-29 01:24:01,984 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:01,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2020-07-29 01:24:01,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af767051/c35ba9c4144e436aa08b4c3d26c9bcb8/FLAGcd7936233 [2020-07-29 01:24:02,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af767051/c35ba9c4144e436aa08b4c3d26c9bcb8 [2020-07-29 01:24:02,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:02,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:02,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:02,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:02,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:02,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1569f8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02, skipping insertion in model container [2020-07-29 01:24:02,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:02,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:02,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:02,588 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:02,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:02,622 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:02,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02 WrapperNode [2020-07-29 01:24:02,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:02,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:02,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:02,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:02,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:02,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:02,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:02,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:02,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (1/1) ... [2020-07-29 01:24:02,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:02,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:02,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:02,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:02,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (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 01:24:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-07-29 01:24:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-07-29 01:24:03,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:03,211 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:24:03,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:03 BoogieIcfgContainer [2020-07-29 01:24:03,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:03,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:03,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:03,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:03,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:02" (1/3) ... [2020-07-29 01:24:03,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:03, skipping insertion in model container [2020-07-29 01:24:03,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:02" (2/3) ... [2020-07-29 01:24:03,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:03, skipping insertion in model container [2020-07-29 01:24:03,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:03" (3/3) ... [2020-07-29 01:24:03,223 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-1.c [2020-07-29 01:24:03,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:03,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-07-29 01:24:03,256 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-07-29 01:24:03,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:03,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:03,286 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:03,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:03,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:03,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:03,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:03,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-29 01:24:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:24:03,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:03,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:03,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1481027418, now seen corresponding path program 1 times [2020-07-29 01:24:03,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:03,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278327347] [2020-07-29 01:24:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:03,533 INFO L280 TraceCheckUtils]: 0: Hoare triple {40#true} havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; {40#true} is VALID [2020-07-29 01:24:03,534 INFO L280 TraceCheckUtils]: 1: Hoare triple {40#true} assume !(main_~m~0 < 0 || main_~m~0 > 3);assume -2147483648 <= main_#t~nondet4 && main_#t~nondet4 <= 2147483647;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; {40#true} is VALID [2020-07-29 01:24:03,535 INFO L280 TraceCheckUtils]: 2: Hoare triple {40#true} assume !(main_~n~0 < 0 || main_~n~0 > 23); {42#(<= ULTIMATE.start_main_~n~0 23)} is VALID [2020-07-29 01:24:03,537 INFO L263 TraceCheckUtils]: 3: Hoare triple {42#(<= ULTIMATE.start_main_~n~0 23)} call main_#t~ret5 := ackermann(main_~m~0, main_~n~0); {43#(<= |ackermann_#in~n| 23)} is VALID [2020-07-29 01:24:03,539 INFO L280 TraceCheckUtils]: 4: Hoare triple {43#(<= |ackermann_#in~n| 23)} ~m := #in~m;~n := #in~n; {44#(<= ackermann_~n 23)} is VALID [2020-07-29 01:24:03,540 INFO L280 TraceCheckUtils]: 5: Hoare triple {44#(<= ackermann_~n 23)} assume 0 == ~m; {44#(<= ackermann_~n 23)} is VALID [2020-07-29 01:24:03,541 INFO L280 TraceCheckUtils]: 6: Hoare triple {44#(<= ackermann_~n 23)} assume !(1 + ~n <= 2147483647); {41#false} is VALID [2020-07-29 01:24:03,544 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 01:24:03,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278327347] [2020-07-29 01:24:03,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:03,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:24:03,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580077086] [2020-07-29 01:24:03,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-07-29 01:24:03,555 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:03,558 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:24:03,573 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:03,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:24:03,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:24:03,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:03,587 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2020-07-29 01:24:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,022 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-07-29 01:24:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-29 01:24:04,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-07-29 01:24:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2020-07-29 01:24:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2020-07-29 01:24:04,043 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 83 transitions. [2020-07-29 01:24:04,169 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:04,198 INFO L225 Difference]: With dead ends: 72 [2020-07-29 01:24:04,201 INFO L226 Difference]: Without dead ends: 58 [2020-07-29 01:24:04,210 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 01:24:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-29 01:24:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-07-29 01:24:04,282 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:04,283 INFO L82 GeneralOperation]: Start isEquivalent. First operand 58 states. Second operand 50 states. [2020-07-29 01:24:04,284 INFO L74 IsIncluded]: Start isIncluded. First operand 58 states. Second operand 50 states. [2020-07-29 01:24:04,285 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 50 states. [2020-07-29 01:24:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,303 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-07-29 01:24:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-07-29 01:24:04,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:04,308 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:04,309 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 58 states. [2020-07-29 01:24:04,309 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 58 states. [2020-07-29 01:24:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,327 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-07-29 01:24:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-07-29 01:24:04,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:04,336 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:04,337 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:04,337 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-29 01:24:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-07-29 01:24:04,344 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 7 [2020-07-29 01:24:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:04,344 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-07-29 01:24:04,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:24:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-07-29 01:24:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-29 01:24:04,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:04,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:04,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:04,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1332795356, now seen corresponding path program 1 times [2020-07-29 01:24:04,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:04,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525686593] [2020-07-29 01:24:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:04,402 INFO L280 TraceCheckUtils]: 0: Hoare triple {308#true} havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; {308#true} is VALID [2020-07-29 01:24:04,404 INFO L280 TraceCheckUtils]: 1: Hoare triple {308#true} assume !(main_~m~0 < 0 || main_~m~0 > 3);assume -2147483648 <= main_#t~nondet4 && main_#t~nondet4 <= 2147483647;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; {310#(<= ULTIMATE.start_main_~m~0 3)} is VALID [2020-07-29 01:24:04,404 INFO L280 TraceCheckUtils]: 2: Hoare triple {310#(<= ULTIMATE.start_main_~m~0 3)} assume !(main_~n~0 < 0 || main_~n~0 > 23); {310#(<= ULTIMATE.start_main_~m~0 3)} is VALID [2020-07-29 01:24:04,406 INFO L263 TraceCheckUtils]: 3: Hoare triple {310#(<= ULTIMATE.start_main_~m~0 3)} call main_#t~ret5 := ackermann(main_~m~0, main_~n~0); {311#(<= |ackermann_#in~m| 3)} is VALID [2020-07-29 01:24:04,407 INFO L280 TraceCheckUtils]: 4: Hoare triple {311#(<= |ackermann_#in~m| 3)} ~m := #in~m;~n := #in~n; {312#(<= ackermann_~m 3)} is VALID [2020-07-29 01:24:04,408 INFO L280 TraceCheckUtils]: 5: Hoare triple {312#(<= ackermann_~m 3)} assume !(0 == ~m); {312#(<= ackermann_~m 3)} is VALID [2020-07-29 01:24:04,409 INFO L280 TraceCheckUtils]: 6: Hoare triple {312#(<= ackermann_~m 3)} assume 0 == ~n; {312#(<= ackermann_~m 3)} is VALID [2020-07-29 01:24:04,410 INFO L280 TraceCheckUtils]: 7: Hoare triple {312#(<= ackermann_~m 3)} assume !(~m - 1 <= 2147483647); {309#false} is VALID [2020-07-29 01:24:04,411 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 01:24:04,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525686593] [2020-07-29 01:24:04,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:04,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:24:04,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918434124] [2020-07-29 01:24:04,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-07-29 01:24:04,414 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:04,414 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:24:04,427 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:04,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:24:04,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:24:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:04,428 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 5 states. [2020-07-29 01:24:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,639 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2020-07-29 01:24:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:24:04,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-07-29 01:24:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-29 01:24:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-29 01:24:04,644 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 35 transitions. [2020-07-29 01:24:04,695 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:04,699 INFO L225 Difference]: With dead ends: 50 [2020-07-29 01:24:04,699 INFO L226 Difference]: Without dead ends: 48 [2020-07-29 01:24:04,700 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 01:24:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-29 01:24:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-29 01:24:04,726 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:04,727 INFO L82 GeneralOperation]: Start isEquivalent. First operand 48 states. Second operand 48 states. [2020-07-29 01:24:04,727 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 48 states. [2020-07-29 01:24:04,727 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 48 states. [2020-07-29 01:24:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,732 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-07-29 01:24:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-07-29 01:24:04,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:04,735 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:04,735 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 48 states. [2020-07-29 01:24:04,736 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 48 states. [2020-07-29 01:24:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:04,740 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-07-29 01:24:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-07-29 01:24:04,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:04,742 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:04,742 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:04,742 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-29 01:24:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-07-29 01:24:04,746 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 8 [2020-07-29 01:24:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:04,747 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-07-29 01:24:04,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:24:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-07-29 01:24:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-29 01:24:04,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:04,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:04,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:24:04,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1332790359, now seen corresponding path program 1 times [2020-07-29 01:24:04,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:04,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894632187] [2020-07-29 01:24:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:04,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-29 01:24:04,763 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 01:24:04,770 INFO L168 Benchmark]: Toolchain (without parser) took 2434.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 961.6 MB in the beginning and 947.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 149.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,771 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:04,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.10 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,774 INFO L168 Benchmark]: Boogie Preprocessor took 19.69 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,775 INFO L168 Benchmark]: RCFGBuilder took 468.58 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,776 INFO L168 Benchmark]: TraceAbstraction took 1551.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.3 MB in the end (delta: 150.1 MB). Peak memory consumption was 150.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:04,780 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 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.10 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 102.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.69 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 468.58 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1551.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.3 MB in the end (delta: 150.1 MB). Peak memory consumption was 150.1 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...