./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 678e0110 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 0.1.24-678e011 [2019-11-19 22:18:12,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:18:12,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:18:12,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:18:12,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:18:12,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:18:12,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:18:12,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:18:12,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:18:12,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:18:12,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:18:12,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:18:12,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:18:12,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:18:12,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:18:12,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:18:12,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:18:12,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:18:12,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:18:12,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:18:12,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:18:12,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:18:12,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:18:12,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:18:12,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:18:12,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:18:12,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:18:12,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:18:12,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:18:12,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:18:12,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:18:12,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:18:12,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:18:12,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:18:12,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:18:12,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:18:12,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:18:12,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:18:12,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:18:12,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:18:12,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:18:12,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-19 22:18:12,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:18:12,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:18:12,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:18:12,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:18:12,908 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:18:12,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:18:12,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:18:12,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:18:12,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:18:12,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:18:12,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:18:12,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:18:12,910 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 22:18:12,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:18:12,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:18:12,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:18:12,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:18:12,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:18:12,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:18:12,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:18:12,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:18:12,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:18:12,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:18:12,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:18:12,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:18:12,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:18:12,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:18:12,915 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 [2019-11-19 22:18:13,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:18:13,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:18:13,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:18:13,247 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:18:13,248 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:18:13,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:18:13,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6481f020/e32d8c64f13d4f75bc5dea4a6762ef09/FLAG9da475aa5 [2019-11-19 22:18:13,756 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:18:13,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:18:13,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6481f020/e32d8c64f13d4f75bc5dea4a6762ef09/FLAG9da475aa5 [2019-11-19 22:18:14,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6481f020/e32d8c64f13d4f75bc5dea4a6762ef09 [2019-11-19 22:18:14,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:18:14,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:18:14,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:14,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:18:14,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:18:14,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67838e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:18:14,152 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:18:14,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:14,328 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:18:14,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:14,364 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:18:14,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14 WrapperNode [2019-11-19 22:18:14,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:14,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:14,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:18:14,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:18:14,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:14,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:18:14,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:18:14,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:18:14,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:18:14,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:18:14,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:18:14,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:18:14,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (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 [2019-11-19 22:18:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:18:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:18:14,704 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:18:14,704 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 22:18:14,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14 BoogieIcfgContainer [2019-11-19 22:18:14,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:18:14,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:18:14,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:18:14,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:18:14,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:18:14" (1/3) ... [2019-11-19 22:18:14,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4974fdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (2/3) ... [2019-11-19 22:18:14,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4974fdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14" (3/3) ... [2019-11-19 22:18:14,714 INFO L109 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:18:14,722 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:18:14,727 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-19 22:18:14,737 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-19 22:18:14,761 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:18:14,761 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:18:14,761 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:18:14,761 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:18:14,761 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:18:14,762 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:18:14,762 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:18:14,762 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:18:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-19 22:18:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 22:18:14,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:14,785 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 22:18:14,786 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-19 22:18:14,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:14,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334726044] [2019-11-19 22:18:14,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334726044] [2019-11-19 22:18:15,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:15,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:18:15,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158028840] [2019-11-19 22:18:15,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:18:15,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:18:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:18:15,112 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-11-19 22:18:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:15,278 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-19 22:18:15,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:18:15,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-19 22:18:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:15,293 INFO L225 Difference]: With dead ends: 23 [2019-11-19 22:18:15,294 INFO L226 Difference]: Without dead ends: 14 [2019-11-19 22:18:15,303 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 [2019-11-19 22:18:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-19 22:18:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-19 22:18:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 22:18:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-19 22:18:15,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-19 22:18:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:15,350 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-19 22:18:15,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:18:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 22:18:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 22:18:15,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:15,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 22:18:15,354 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-11-19 22:18:15,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:15,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775043670] [2019-11-19 22:18:15,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775043670] [2019-11-19 22:18:15,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:15,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 22:18:15,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298764861] [2019-11-19 22:18:15,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:18:15,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:15,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:18:15,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:15,402 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-19 22:18:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:15,448 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-19 22:18:15,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:18:15,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-19 22:18:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:15,450 INFO L225 Difference]: With dead ends: 20 [2019-11-19 22:18:15,450 INFO L226 Difference]: Without dead ends: 19 [2019-11-19 22:18:15,451 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 [2019-11-19 22:18:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-19 22:18:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-19 22:18:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 22:18:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-19 22:18:15,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2019-11-19 22:18:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:15,457 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-19 22:18:15,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:18:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-19 22:18:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 22:18:15,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:15,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 22:18:15,458 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-19 22:18:15,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:15,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808185957] [2019-11-19 22:18:15,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808185957] [2019-11-19 22:18:15,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:15,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 22:18:15,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083555788] [2019-11-19 22:18:15,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:18:15,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:18:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:15,489 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-11-19 22:18:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:15,522 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-19 22:18:15,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:18:15,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-19 22:18:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:15,524 INFO L225 Difference]: With dead ends: 18 [2019-11-19 22:18:15,524 INFO L226 Difference]: Without dead ends: 17 [2019-11-19 22:18:15,525 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 [2019-11-19 22:18:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-19 22:18:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-19 22:18:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 22:18:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-19 22:18:15,530 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2019-11-19 22:18:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:15,531 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-19 22:18:15,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:18:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-19 22:18:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 22:18:15,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:15,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 22:18:15,532 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-11-19 22:18:15,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:15,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379560268] [2019-11-19 22:18:15,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379560268] [2019-11-19 22:18:15,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:15,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:18:15,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170840557] [2019-11-19 22:18:15,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:18:15,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:15,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:18:15,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:18:15,589 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-19 22:18:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:15,638 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-19 22:18:15,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:18:15,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-19 22:18:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:15,639 INFO L225 Difference]: With dead ends: 17 [2019-11-19 22:18:15,640 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 22:18:15,640 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 [2019-11-19 22:18:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 22:18:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 22:18:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 22:18:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-19 22:18:15,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2019-11-19 22:18:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:15,646 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-19 22:18:15,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:18:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-19 22:18:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:18:15,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:15,648 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-19 22:18:15,648 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:15,648 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2019-11-19 22:18:15,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:15,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691937532] [2019-11-19 22:18:15,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691937532] [2019-11-19 22:18:15,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440939609] [2019-11-19 22:18:15,739 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 [2019-11-19 22:18:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:18:15,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:18:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:18:15,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:18:15,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2019-11-19 22:18:15,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751021168] [2019-11-19 22:18:15,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 22:18:15,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 22:18:15,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:18:15,854 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 7 states. [2019-11-19 22:18:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:15,920 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-19 22:18:15,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:18:15,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-19 22:18:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:15,924 INFO L225 Difference]: With dead ends: 16 [2019-11-19 22:18:15,924 INFO L226 Difference]: Without dead ends: 15 [2019-11-19 22:18:15,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:18:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-19 22:18:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-11-19 22:18:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 22:18:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-19 22:18:15,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-19 22:18:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:15,937 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-19 22:18:15,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 22:18:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-19 22:18:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:18:15,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:15,938 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:18:16,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:18:16,140 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2019-11-19 22:18:16,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:16,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515638776] [2019-11-19 22:18:16,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:16,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515638776] [2019-11-19 22:18:16,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:16,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:18:16,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363988693] [2019-11-19 22:18:16,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:18:16,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:16,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:18:16,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:18:16,175 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-19 22:18:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:16,208 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2019-11-19 22:18:16,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:18:16,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-19 22:18:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:16,209 INFO L225 Difference]: With dead ends: 21 [2019-11-19 22:18:16,209 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:18:16,210 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 [2019-11-19 22:18:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:18:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:18:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:18:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:18:16,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-19 22:18:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:16,211 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:18:16,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:18:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:18:16,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:18:16,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:18:16,318 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-19 22:18:16,318 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-19 22:18:16,319 INFO L444 ceAbstractionStarter]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2019-11-19 22:18:16,320 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-19 22:18:16,320 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-19 22:18:16,320 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:18:16,320 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:18:16,321 INFO L440 ceAbstractionStarter]: 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)) [2019-11-19 22:18:16,321 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2019-11-19 22:18:16,321 INFO L440 ceAbstractionStarter]: 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))) [2019-11-19 22:18:16,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:18:16 BoogieIcfgContainer [2019-11-19 22:18:16,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:18:16,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:18:16,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:18:16,339 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:18:16,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14" (3/4) ... [2019-11-19 22:18:16,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:18:16,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 22:18:16,357 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:18:16,398 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 22:18:16,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:18:16,401 INFO L168 Benchmark]: Toolchain (without parser) took 2284.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -41.6 MB). Peak memory consumption was 77.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:16,402 INFO L168 Benchmark]: CDTParser took 0.32 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. [2019-11-19 22:18:16,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:16,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:16,403 INFO L168 Benchmark]: Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:16,404 INFO L168 Benchmark]: RCFGBuilder took 230.16 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:16,405 INFO L168 Benchmark]: TraceAbstraction took 1632.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:16,405 INFO L168 Benchmark]: Witness Printer took 59.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:16,408 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 248.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 90.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.16 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1632.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. * Witness Printer took 59.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. 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: 1.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 15 SDtfs, 53 SDslu, 3 SDs, 0 SdLazy, 101 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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, 115 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...