./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.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 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ....................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:22:51,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:22:51,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:22:51,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:22:51,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:22:51,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:22:51,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:22:51,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:22:51,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:22:51,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:22:51,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:22:51,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:22:51,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:22:51,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:22:51,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:22:51,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:22:51,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:22:51,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:22:51,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:22:51,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:22:51,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:22:51,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:22:51,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:22:51,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:22:51,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:22:51,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:22:51,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:22:51,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:22:51,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:22:51,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:22:51,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:22:51,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:22:51,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:22:51,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:22:51,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:22:51,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:22:51,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:22:51,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:22:51,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:22:51,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:22:51,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:22:51,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:22:51,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:22:51,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:22:51,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:22:51,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:22:51,148 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:22:51,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:22:51,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:22:51,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:22:51,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:22:51,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:22:51,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:22:51,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:22:51,151 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:22:51,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:22:51,152 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:22:51,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:22:51,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:22:51,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:22:51,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:22:51,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:22:51,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:22:51,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:22:51,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:22:51,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:22:51,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:22:51,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:22:51,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:22:51,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:22:51,157 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 -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2019-11-28 20:22:51,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:22:51,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:22:51,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:22:51,526 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:22:51,526 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:22:51,527 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2019-11-28 20:22:51,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad3fdbba/154605a95d2d4f9f86eeea61f2a74b78/FLAG796aa4c47 [2019-11-28 20:22:52,076 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:22:52,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2019-11-28 20:22:52,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad3fdbba/154605a95d2d4f9f86eeea61f2a74b78/FLAG796aa4c47 [2019-11-28 20:22:52,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad3fdbba/154605a95d2d4f9f86eeea61f2a74b78 [2019-11-28 20:22:52,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:22:52,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:22:52,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:52,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:22:52,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:22:52,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5562b866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52, skipping insertion in model container [2019-11-28 20:22:52,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:22:52,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:22:52,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:52,718 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:22:52,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:52,746 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:22:52,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52 WrapperNode [2019-11-28 20:22:52,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:52,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:52,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:22:52,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:22:52,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:52,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:22:52,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:22:52,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:22:52,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... [2019-11-28 20:22:52,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:22:52,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:22:52,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:22:52,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:22:52,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:22:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:22:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:22:53,105 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:22:53,106 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:22:53,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:53 BoogieIcfgContainer [2019-11-28 20:22:53,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:22:53,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:22:53,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:22:53,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:22:53,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:22:52" (1/3) ... [2019-11-28 20:22:53,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e9ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:53, skipping insertion in model container [2019-11-28 20:22:53,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:52" (2/3) ... [2019-11-28 20:22:53,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e9ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:53, skipping insertion in model container [2019-11-28 20:22:53,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:53" (3/3) ... [2019-11-28 20:22:53,117 INFO L109 eAbstractionObserver]: Analyzing ICFG Nyala-2lex-2.c [2019-11-28 20:22:53,127 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:22:53,135 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:22:53,148 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:22:53,183 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:22:53,184 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:22:53,184 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:22:53,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:22:53,185 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:22:53,185 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:22:53,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:22:53,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:22:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 20:22:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:22:53,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:22:53,225 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,237 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-28 20:22:53,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337622125] [2019-11-28 20:22:53,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337622125] [2019-11-28 20:22:53,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:53,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:53,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46511292] [2019-11-28 20:22:53,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:53,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:53,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,429 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-28 20:22:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,478 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-28 20:22:53,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:53,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-28 20:22:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,488 INFO L225 Difference]: With dead ends: 19 [2019-11-28 20:22:53,489 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 20:22:53,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 20:22:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 20:22:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:22:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 20:22:53,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 3 [2019-11-28 20:22:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,525 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 20:22:53,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 20:22:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:22:53,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,527 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:22:53,527 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-28 20:22:53,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848969147] [2019-11-28 20:22:53,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848969147] [2019-11-28 20:22:53,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:53,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:22:53,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47658978] [2019-11-28 20:22:53,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:53,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:53,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,555 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2019-11-28 20:22:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,592 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-28 20:22:53,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:53,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:22:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,593 INFO L225 Difference]: With dead ends: 11 [2019-11-28 20:22:53,593 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 20:22:53,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 20:22:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-28 20:22:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 20:22:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-28 20:22:53,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2019-11-28 20:22:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,598 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-28 20:22:53,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-28 20:22:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 20:22:53,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,598 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:22:53,599 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash 925739533, now seen corresponding path program 1 times [2019-11-28 20:22:53,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524440426] [2019-11-28 20:22:53,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524440426] [2019-11-28 20:22:53,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:53,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:53,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401071790] [2019-11-28 20:22:53,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:53,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,635 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-11-28 20:22:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,669 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-28 20:22:53,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:53,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 20:22:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,671 INFO L225 Difference]: With dead ends: 9 [2019-11-28 20:22:53,671 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 20:22:53,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 20:22:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 20:22:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 20:22:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 20:22:53,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-11-28 20:22:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,679 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 20:22:53,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-28 20:22:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:22:53,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,681 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:22:53,681 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1366845498, now seen corresponding path program 1 times [2019-11-28 20:22:53,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840789500] [2019-11-28 20:22:53,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840789500] [2019-11-28 20:22:53,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:53,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:22:53,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341567857] [2019-11-28 20:22:53,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:53,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:53,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,720 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-11-28 20:22:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,737 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-28 20:22:53,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:53,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 20:22:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,738 INFO L225 Difference]: With dead ends: 9 [2019-11-28 20:22:53,738 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:22:53,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:22:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:22:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:22:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:22:53,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-28 20:22:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,740 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:22:53,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:22:53,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:22:53,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:22:53,769 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:22:53,769 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:22:53,769 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:22:53,770 INFO L246 CegarLoopResult]: For program point L21(lines 21 24) no Hoare annotation was computed. [2019-11-28 20:22:53,770 INFO L242 CegarLoopResult]: At program point L21-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2019-11-28 20:22:53,770 INFO L246 CegarLoopResult]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-11-28 20:22:53,770 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:22:53,770 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:22:53,771 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:22:53,771 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:22:53,771 INFO L242 CegarLoopResult]: At program point L26(lines 15 27) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-11-28 20:22:53,771 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 20:22:53,771 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-28 20:22:53,771 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-28 20:22:53,772 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-28 20:22:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:22:53 BoogieIcfgContainer [2019-11-28 20:22:53,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:22:53,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:22:53,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:22:53,791 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:22:53,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:53" (3/4) ... [2019-11-28 20:22:53,795 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:22:53,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:22:53,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 20:22:53,853 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:22:53,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:22:53,856 INFO L168 Benchmark]: Toolchain (without parser) took 1352.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,857 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:53,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,859 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,859 INFO L168 Benchmark]: RCFGBuilder took 240.21 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,860 INFO L168 Benchmark]: TraceAbstraction took 681.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:53,860 INFO L168 Benchmark]: Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:53,864 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 240.21 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 681.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...