./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab 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-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:51:46,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:51:46,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:51:46,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:51:46,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:51:46,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:51:46,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:51:46,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:51:46,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:51:46,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:51:46,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:51:46,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:51:46,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:51:46,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:51:47,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:51:47,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:51:47,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:51:47,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:51:47,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:51:47,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:51:47,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:51:47,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:51:47,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:51:47,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:51:47,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:51:47,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:51:47,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:51:47,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:51:47,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:51:47,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:51:47,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:51:47,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:51:47,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:51:47,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:51:47,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:51:47,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:51:47,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:51:47,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:51:47,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:51:47,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:51:47,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:51:47,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:51:47,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:51:47,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:51:47,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:51:47,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:51:47,099 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:51:47,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:51:47,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:51:47,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:51:47,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:51:47,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:51:47,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:51:47,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:51:47,101 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:51:47,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:51:47,104 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:51:47,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:51:47,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:51:47,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:51:47,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:51:47,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:51:47,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:51:47,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:51:47,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:51:47,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:51:47,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:51:47,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:51:47,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:51:47,109 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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2019-11-28 02:51:47,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:51:47,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:51:47,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:51:47,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:51:47,512 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:51:47,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-28 02:51:47,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695ac4780/d4d730301c4f4d8185891cdf3b597c23/FLAG7dab689e6 [2019-11-28 02:51:48,036 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:51:48,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-28 02:51:48,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695ac4780/d4d730301c4f4d8185891cdf3b597c23/FLAG7dab689e6 [2019-11-28 02:51:48,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695ac4780/d4d730301c4f4d8185891cdf3b597c23 [2019-11-28 02:51:48,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:51:48,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:51:48,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:51:48,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:51:48,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:51:48,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c493f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48, skipping insertion in model container [2019-11-28 02:51:48,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:51:48,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:51:48,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:51:48,702 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:51:48,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:51:48,739 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:51:48,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48 WrapperNode [2019-11-28 02:51:48,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:51:48,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:51:48,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:51:48,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:51:48,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:51:48,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:51:48,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:51:48,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:51:48,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (1/1) ... [2019-11-28 02:51:48,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:51:48,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:51:48,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:51:48,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:51:48,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (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 02:51:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:51:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:51:49,134 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:51:49,135 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:51:49,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:49 BoogieIcfgContainer [2019-11-28 02:51:49,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:51:49,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:51:49,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:51:49,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:51:49,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:51:48" (1/3) ... [2019-11-28 02:51:49,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49978108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:49, skipping insertion in model container [2019-11-28 02:51:49,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:48" (2/3) ... [2019-11-28 02:51:49,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49978108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:49, skipping insertion in model container [2019-11-28 02:51:49,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:49" (3/3) ... [2019-11-28 02:51:49,144 INFO L109 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-28 02:51:49,153 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:51:49,159 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:51:49,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:51:49,193 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:51:49,194 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:51:49,194 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:51:49,194 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:51:49,194 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:51:49,194 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:51:49,195 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:51:49,195 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:51:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 02:51:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:51:49,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:49,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:51:49,217 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-28 02:51:49,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:49,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839976887] [2019-11-28 02:51:49,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:49,507 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 02:51:49,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839976887] [2019-11-28 02:51:49,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:49,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:51:49,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903903628] [2019-11-28 02:51:49,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:51:49,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:49,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:51:49,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:51:49,534 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-11-28 02:51:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:49,624 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-28 02:51:49,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:51:49,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-28 02:51:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:49,634 INFO L225 Difference]: With dead ends: 23 [2019-11-28 02:51:49,634 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 02:51:49,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:51:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 02:51:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 02:51:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 02:51:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 02:51:49,673 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-28 02:51:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:49,673 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 02:51:49,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:51:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 02:51:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:51:49,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:49,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:51:49,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-11-28 02:51:49,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:49,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786993746] [2019-11-28 02:51:49,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:49,705 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 02:51:49,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786993746] [2019-11-28 02:51:49,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:49,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:51:49,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103147457] [2019-11-28 02:51:49,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:51:49,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:49,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:51:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:51:49,712 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-28 02:51:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:49,761 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-28 02:51:49,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:51:49,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 02:51:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:49,763 INFO L225 Difference]: With dead ends: 20 [2019-11-28 02:51:49,763 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 02:51:49,764 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 02:51:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 02:51:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-28 02:51:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:51:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 02:51:49,770 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2019-11-28 02:51:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:49,770 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 02:51:49,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:51:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-28 02:51:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:51:49,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:49,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:51:49,772 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:49,772 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-28 02:51:49,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:49,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129041192] [2019-11-28 02:51:49,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:49,812 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 02:51:49,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129041192] [2019-11-28 02:51:49,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:49,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:51:49,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114380476] [2019-11-28 02:51:49,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:51:49,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:51:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:51:49,814 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-11-28 02:51:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:49,852 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-28 02:51:49,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:51:49,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 02:51:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:49,855 INFO L225 Difference]: With dead ends: 18 [2019-11-28 02:51:49,855 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 02:51:49,856 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 02:51:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 02:51:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 02:51:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 02:51:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-28 02:51:49,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2019-11-28 02:51:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:49,868 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-28 02:51:49,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:51:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-28 02:51:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:51:49,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:49,876 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:51:49,877 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-11-28 02:51:49,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:49,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472495532] [2019-11-28 02:51:49,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:49,932 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 02:51:49,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472495532] [2019-11-28 02:51:49,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:49,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:51:49,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26875313] [2019-11-28 02:51:49,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:51:49,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:49,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:51:49,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:51:49,937 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-28 02:51:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:49,990 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-28 02:51:49,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:51:49,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 02:51:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:49,992 INFO L225 Difference]: With dead ends: 17 [2019-11-28 02:51:49,992 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:51:49,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:51:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:51:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:51:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:51:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-28 02:51:50,004 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2019-11-28 02:51:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:50,005 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 02:51:50,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:51:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-28 02:51:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:51:50,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:50,007 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-28 02:51:50,007 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2019-11-28 02:51:50,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:50,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063620610] [2019-11-28 02:51:50,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:51:50,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063620610] [2019-11-28 02:51:50,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101901847] [2019-11-28 02:51:50,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:51:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:50,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:51:50,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:51:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:51:50,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:51:50,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2019-11-28 02:51:50,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151283163] [2019-11-28 02:51:50,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:51:50,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:50,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:51:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:51:50,207 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 7 states. [2019-11-28 02:51:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:50,262 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-28 02:51:50,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:51:50,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-28 02:51:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:50,264 INFO L225 Difference]: With dead ends: 16 [2019-11-28 02:51:50,265 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 02:51:50,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:51:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 02:51:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-11-28 02:51:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:51:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 02:51:50,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-28 02:51:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:50,274 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 02:51:50,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:51:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-28 02:51:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:51:50,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:51:50,275 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:51:50,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:51:50,477 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:51:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:51:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2019-11-28 02:51:50,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:51:50,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093510991] [2019-11-28 02:51:50,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:51:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:51:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:51:50,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093510991] [2019-11-28 02:51:50,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:51:50,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:51:50,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74727748] [2019-11-28 02:51:50,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:51:50,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:51:50,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:51:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:51:50,549 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-28 02:51:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:51:50,583 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2019-11-28 02:51:50,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:51:50,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 02:51:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:51:50,584 INFO L225 Difference]: With dead ends: 21 [2019-11-28 02:51:50,584 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:51:50,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:51:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:51:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:51:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:51:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:51:50,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 02:51:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:51:50,587 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:51:50,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:51:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:51:50,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:51:50,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 02:51:50,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-28 02:51:50,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 02:51:50,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-28 02:51:50,689 INFO L246 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-28 02:51:50,689 INFO L246 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-28 02:51:50,690 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-28 02:51:50,690 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-28 02:51:50,690 INFO L246 CegarLoopResult]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2019-11-28 02:51:50,690 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-28 02:51:50,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-28 02:51:50,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 02:51:50,692 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 02:51:50,694 INFO L242 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~K~0 1) ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~K~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2147483646)) [2019-11-28 02:51:50,694 INFO L246 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2019-11-28 02:51:50,695 INFO L242 CegarLoopResult]: At program point L18-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~K~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~K~0 2147483648))) [2019-11-28 02:51:50,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:51:50 BoogieIcfgContainer [2019-11-28 02:51:50,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:51:50,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:51:50,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:51:50,726 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:51:50,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:49" (3/4) ... [2019-11-28 02:51:50,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:51:50,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 02:51:50,751 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 02:51:50,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:51:50,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:51:50,825 INFO L168 Benchmark]: Toolchain (without parser) took 2393.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 957.7 MB in the beginning and 983.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,826 INFO L168 Benchmark]: CDTParser took 1.13 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 02:51:50,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.14 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,828 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,829 INFO L168 Benchmark]: RCFGBuilder took 233.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,830 INFO L168 Benchmark]: TraceAbstraction took 1587.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.6 MB in the end (delta: 83.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,831 INFO L168 Benchmark]: Witness Printer took 97.82 ms. Allocated memory is still 1.1 GB. Free memory was 990.6 MB in the beginning and 983.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:51:50,835 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 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 309.14 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 130.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 233.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1587.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.6 MB in the end (delta: 83.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. * Witness Printer took 97.82 ms. Allocated memory is still 1.1 GB. Free memory was 990.6 MB in the beginning and 983.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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: 17]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= x + 2147483648) && K <= 2147483647) && 0 <= K + 2147483648 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (K + 1 <= x || K == x) || x <= 2147483646 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 15 SDtfs, 53 SDslu, 3 SDs, 0 SdLazy, 101 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 29 HoareAnnotationTreeSize, 2 FomulaSimplifications, 117 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 SizeOfPredicates, 1 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/8 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...