./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f6fb2bb1 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-numeric/EvenOdd01-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c954ac4f2e7268a034de9541f0b035f7b20976b7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 19:53:15,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:53:15,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:53:15,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:53:15,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:53:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:53:15,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:53:15,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:53:15,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:53:15,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:53:15,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:53:15,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:53:15,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:53:15,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:53:15,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:53:15,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:53:15,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:53:15,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:53:15,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:53:15,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:53:15,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:53:15,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:53:15,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:53:15,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:53:15,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:53:15,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:53:15,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:53:15,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:53:15,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:53:15,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:53:15,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:53:15,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:53:15,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:53:15,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:53:15,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:53:15,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:53:15,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:53:15,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:53:15,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:53:15,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:53:15,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:53:15,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-19 19:53:16,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:53:16,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:53:16,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:53:16,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:53:16,022 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:53:16,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:53:16,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:53:16,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:53:16,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:53:16,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 19:53:16,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:53:16,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 19:53:16,025 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 19:53:16,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:53:16,026 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:53:16,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 19:53:16,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:53:16,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:53:16,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:53:16,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:53:16,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:53:16,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:53:16,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:53:16,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 19:53:16,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:53:16,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 19:53:16,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 19:53:16,030 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 -> c954ac4f2e7268a034de9541f0b035f7b20976b7 [2019-11-19 19:53:16,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:53:16,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:53:16,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:53:16,386 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:53:16,387 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:53:16,388 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2019-11-19 19:53:16,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b9f1d538/4cf5ad342e444ca9833d69b8923f0b38/FLAG074c3ee7f [2019-11-19 19:53:16,908 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:53:16,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2019-11-19 19:53:16,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b9f1d538/4cf5ad342e444ca9833d69b8923f0b38/FLAG074c3ee7f [2019-11-19 19:53:17,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b9f1d538/4cf5ad342e444ca9833d69b8923f0b38 [2019-11-19 19:53:17,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:53:17,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:53:17,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:53:17,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:53:17,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:53:17,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a79c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17, skipping insertion in model container [2019-11-19 19:53:17,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,357 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:53:17,380 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:53:17,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:53:17,592 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:53:17,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:53:17,631 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:53:17,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17 WrapperNode [2019-11-19 19:53:17,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:53:17,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:53:17,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:53:17,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:53:17,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:53:17,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:53:17,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:53:17,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:53:17,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (1/1) ... [2019-11-19 19:53:17,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:53:17,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:53:17,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:53:17,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:53:17,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (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 19:53:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-11-19 19:53:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-11-19 19:53:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-11-19 19:53:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-11-19 19:53:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:53:17,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:53:18,000 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:53:18,000 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 19:53:18,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:18 BoogieIcfgContainer [2019-11-19 19:53:18,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:53:18,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:53:18,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:53:18,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:53:18,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:17" (1/3) ... [2019-11-19 19:53:18,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd5fdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:18, skipping insertion in model container [2019-11-19 19:53:18,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:17" (2/3) ... [2019-11-19 19:53:18,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd5fdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:18, skipping insertion in model container [2019-11-19 19:53:18,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:18" (3/3) ... [2019-11-19 19:53:18,014 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-2.c [2019-11-19 19:53:18,028 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:53:18,057 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-19 19:53:18,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-19 19:53:18,117 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:53:18,117 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 19:53:18,117 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:53:18,117 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:53:18,117 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:53:18,118 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:53:18,118 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:53:18,118 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:53:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-19 19:53:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 19:53:18,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:18,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:18,140 INFO L410 AbstractCegarLoop]: === Iteration 1 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2104858774, now seen corresponding path program 1 times [2019-11-19 19:53:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:18,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795619331] [2019-11-19 19:53:18,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:18,338 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 19:53:18,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795619331] [2019-11-19 19:53:18,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:53:18,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 19:53:18,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406150200] [2019-11-19 19:53:18,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:53:18,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:53:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:53:18,361 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-11-19 19:53:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:18,501 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-19 19:53:18,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:53:18,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-19 19:53:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:18,512 INFO L225 Difference]: With dead ends: 47 [2019-11-19 19:53:18,512 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 19:53:18,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:53:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 19:53:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-11-19 19:53:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 19:53:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-19 19:53:18,551 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2019-11-19 19:53:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:18,552 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-19 19:53:18,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:53:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-19 19:53:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 19:53:18,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:18,553 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:18,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash 826112612, now seen corresponding path program 1 times [2019-11-19 19:53:18,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:18,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194210828] [2019-11-19 19:53:18,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:18,598 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 19:53:18,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194210828] [2019-11-19 19:53:18,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:53:18,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 19:53:18,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145535767] [2019-11-19 19:53:18,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 19:53:18,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 19:53:18,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:53:18,603 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2019-11-19 19:53:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:18,652 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-19 19:53:18,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:53:18,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-19 19:53:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:18,654 INFO L225 Difference]: With dead ends: 26 [2019-11-19 19:53:18,654 INFO L226 Difference]: Without dead ends: 25 [2019-11-19 19:53:18,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:53:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-19 19:53:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-19 19:53:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 19:53:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-19 19:53:18,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2019-11-19 19:53:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:18,661 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-19 19:53:18,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 19:53:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-19 19:53:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:53:18,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:18,662 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:18,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash -345822603, now seen corresponding path program 1 times [2019-11-19 19:53:18,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:18,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568589455] [2019-11-19 19:53:18,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:18,744 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 19:53:18,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568589455] [2019-11-19 19:53:18,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:53:18,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 19:53:18,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026491450] [2019-11-19 19:53:18,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 19:53:18,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:18,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 19:53:18,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 19:53:18,748 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2019-11-19 19:53:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:18,826 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-19 19:53:18,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 19:53:18,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-19 19:53:18,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:18,828 INFO L225 Difference]: With dead ends: 24 [2019-11-19 19:53:18,828 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 19:53:18,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-19 19:53:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 19:53:18,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-19 19:53:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-19 19:53:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-19 19:53:18,834 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-19 19:53:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:18,834 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-19 19:53:18,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 19:53:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-19 19:53:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 19:53:18,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:18,837 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:18,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2130566059, now seen corresponding path program 1 times [2019-11-19 19:53:18,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:18,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042842639] [2019-11-19 19:53:18,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:18,946 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 19:53:18,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042842639] [2019-11-19 19:53:18,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:53:18,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 19:53:18,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729061690] [2019-11-19 19:53:18,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 19:53:18,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 19:53:18,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 19:53:18,955 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-11-19 19:53:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:19,066 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-19 19:53:19,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 19:53:19,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-19 19:53:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:19,068 INFO L225 Difference]: With dead ends: 30 [2019-11-19 19:53:19,068 INFO L226 Difference]: Without dead ends: 29 [2019-11-19 19:53:19,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-19 19:53:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-19 19:53:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-19 19:53:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 19:53:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-19 19:53:19,077 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 14 [2019-11-19 19:53:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:19,077 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-19 19:53:19,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 19:53:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-19 19:53:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-19 19:53:19,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:19,079 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:19,080 INFO L410 AbstractCegarLoop]: === Iteration 5 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1256120232, now seen corresponding path program 1 times [2019-11-19 19:53:19,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:19,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297605569] [2019-11-19 19:53:19,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:19,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297605569] [2019-11-19 19:53:19,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934849742] [2019-11-19 19:53:19,182 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 19:53:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:19,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 19:53:19,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:19,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:19,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-19 19:53:19,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167488971] [2019-11-19 19:53:19,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 19:53:19,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 19:53:19,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-19 19:53:19,283 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-11-19 19:53:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:19,431 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2019-11-19 19:53:19,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 19:53:19,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-19 19:53:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:19,435 INFO L225 Difference]: With dead ends: 36 [2019-11-19 19:53:19,435 INFO L226 Difference]: Without dead ends: 35 [2019-11-19 19:53:19,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-19 19:53:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-19 19:53:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-19 19:53:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 19:53:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2019-11-19 19:53:19,444 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 20 [2019-11-19 19:53:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:19,444 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2019-11-19 19:53:19,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 19:53:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2019-11-19 19:53:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 19:53:19,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:19,446 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 19:53:19,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:19,651 INFO L410 AbstractCegarLoop]: === Iteration 6 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:19,652 INFO L82 PathProgramCache]: Analyzing trace with hash 507937609, now seen corresponding path program 1 times [2019-11-19 19:53:19,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:19,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436320731] [2019-11-19 19:53:19,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:19,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436320731] [2019-11-19 19:53:19,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288461647] [2019-11-19 19:53:19,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:19,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 19:53:19,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:19,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:19,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-19 19:53:19,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407195136] [2019-11-19 19:53:19,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 19:53:19,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 19:53:19,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-19 19:53:19,858 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2019-11-19 19:53:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:20,033 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-19 19:53:20,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 19:53:20,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-19 19:53:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:20,036 INFO L225 Difference]: With dead ends: 42 [2019-11-19 19:53:20,036 INFO L226 Difference]: Without dead ends: 41 [2019-11-19 19:53:20,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-19 19:53:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-19 19:53:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-19 19:53:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 19:53:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-19 19:53:20,051 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2019-11-19 19:53:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:20,052 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-19 19:53:20,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 19:53:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-19 19:53:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-19 19:53:20,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:20,061 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-19 19:53:20,264 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:20,265 INFO L410 AbstractCegarLoop]: === Iteration 7 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1150777420, now seen corresponding path program 2 times [2019-11-19 19:53:20,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:20,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552850095] [2019-11-19 19:53:20,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:20,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552850095] [2019-11-19 19:53:20,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713625146] [2019-11-19 19:53:20,436 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:20,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:53:20,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:53:20,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 19:53:20,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:20,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:20,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-19 19:53:20,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349667171] [2019-11-19 19:53:20,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 19:53:20,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:20,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 19:53:20,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-19 19:53:20,515 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2019-11-19 19:53:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:20,692 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-19 19:53:20,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 19:53:20,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-19 19:53:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:20,694 INFO L225 Difference]: With dead ends: 48 [2019-11-19 19:53:20,694 INFO L226 Difference]: Without dead ends: 47 [2019-11-19 19:53:20,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-11-19 19:53:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-19 19:53:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-19 19:53:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-19 19:53:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-19 19:53:20,703 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2019-11-19 19:53:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:20,704 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-19 19:53:20,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 19:53:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-19 19:53:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 19:53:20,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:20,706 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-19 19:53:20,906 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:20,907 INFO L410 AbstractCegarLoop]: === Iteration 8 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1724912701, now seen corresponding path program 2 times [2019-11-19 19:53:20,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:20,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50869887] [2019-11-19 19:53:20,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:21,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50869887] [2019-11-19 19:53:21,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812319743] [2019-11-19 19:53:21,094 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:21,130 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:53:21,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:53:21,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 19:53:21,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:21,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:21,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-19 19:53:21,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811637318] [2019-11-19 19:53:21,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-19 19:53:21,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:21,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-19 19:53:21,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-19 19:53:21,151 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 15 states. [2019-11-19 19:53:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:21,425 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-19 19:53:21,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 19:53:21,428 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2019-11-19 19:53:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:21,430 INFO L225 Difference]: With dead ends: 54 [2019-11-19 19:53:21,430 INFO L226 Difference]: Without dead ends: 53 [2019-11-19 19:53:21,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2019-11-19 19:53:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-19 19:53:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-19 19:53:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-19 19:53:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-19 19:53:21,446 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 38 [2019-11-19 19:53:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:21,448 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-19 19:53:21,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-19 19:53:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-19 19:53:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-19 19:53:21,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:21,449 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-11-19 19:53:21,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:21,651 INFO L410 AbstractCegarLoop]: === Iteration 9 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash 790987328, now seen corresponding path program 3 times [2019-11-19 19:53:21,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:21,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388066006] [2019-11-19 19:53:21,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:21,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388066006] [2019-11-19 19:53:21,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372206618] [2019-11-19 19:53:21,890 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:21,936 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-19 19:53:21,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:53:21,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 19:53:21,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:21,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:21,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-19 19:53:21,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564168064] [2019-11-19 19:53:21,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-19 19:53:21,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-19 19:53:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-19 19:53:21,969 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 17 states. [2019-11-19 19:53:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:22,192 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2019-11-19 19:53:22,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 19:53:22,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2019-11-19 19:53:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:22,193 INFO L225 Difference]: With dead ends: 60 [2019-11-19 19:53:22,194 INFO L226 Difference]: Without dead ends: 59 [2019-11-19 19:53:22,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2019-11-19 19:53:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-19 19:53:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-19 19:53:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-19 19:53:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2019-11-19 19:53:22,203 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 44 [2019-11-19 19:53:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:22,203 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2019-11-19 19:53:22,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-19 19:53:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2019-11-19 19:53:22,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-19 19:53:22,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:22,205 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-19 19:53:22,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:22,409 INFO L410 AbstractCegarLoop]: === Iteration 10 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash 845403953, now seen corresponding path program 3 times [2019-11-19 19:53:22,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:22,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100886930] [2019-11-19 19:53:22,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:22,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100886930] [2019-11-19 19:53:22,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691052066] [2019-11-19 19:53:22,622 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:22,663 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-19 19:53:22,663 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:53:22,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-19 19:53:22,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:22,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:22,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-19 19:53:22,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473307489] [2019-11-19 19:53:22,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-19 19:53:22,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-19 19:53:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-19 19:53:22,703 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 19 states. [2019-11-19 19:53:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:22,997 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2019-11-19 19:53:22,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-19 19:53:22,998 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2019-11-19 19:53:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:22,999 INFO L225 Difference]: With dead ends: 66 [2019-11-19 19:53:22,999 INFO L226 Difference]: Without dead ends: 65 [2019-11-19 19:53:23,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2019-11-19 19:53:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-19 19:53:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-19 19:53:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-19 19:53:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-19 19:53:23,008 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2019-11-19 19:53:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:23,009 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-19 19:53:23,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-19 19:53:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-19 19:53:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-19 19:53:23,010 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:53:23,010 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2019-11-19 19:53:23,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:23,214 INFO L410 AbstractCegarLoop]: === Iteration 11 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 19:53:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:53:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1529856460, now seen corresponding path program 4 times [2019-11-19 19:53:23,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:53:23,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87514094] [2019-11-19 19:53:23,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:53:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:53:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:53:23,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87514094] [2019-11-19 19:53:23,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510749919] [2019-11-19 19:53:23,450 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:23,477 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 19:53:23,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:53:23,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-19 19:53:23,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:53:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-19 19:53:23,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:53:23,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 24 [2019-11-19 19:53:23,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582114816] [2019-11-19 19:53:23,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-19 19:53:23,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:53:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-19 19:53:23,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2019-11-19 19:53:23,602 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 25 states. [2019-11-19 19:53:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:53:23,727 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-19 19:53:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 19:53:23,728 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2019-11-19 19:53:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:53:23,729 INFO L225 Difference]: With dead ends: 64 [2019-11-19 19:53:23,729 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 19:53:23,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2019-11-19 19:53:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 19:53:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 19:53:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 19:53:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 19:53:23,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-19 19:53:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:53:23,732 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:53:23,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-19 19:53:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 19:53:23,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 19:53:23,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:53:23,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 19:53:24,140 INFO L444 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-19 19:53:24,140 INFO L444 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-19 19:53:24,140 INFO L440 ceAbstractionStarter]: At program point L32-2(line 32) the Hoare annotation is: (or (not (<= 1 |isEven_#in~n|)) (not (<= |isEven_#in~n| 2147483646)) (and (<= 1 isEven_~n) (<= isEven_~n 2147483646))) [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point L32-3(line 32) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 33) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L447 ceAbstractionStarter]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2019-11-19 19:53:24,141 INFO L444 ceAbstractionStarter]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L440 ceAbstractionStarter]: At program point L22-2(line 22) the Hoare annotation is: (or (and (<= isOdd_~n 2147483647) (not (= isOdd_~n 0)) (<= 0 isOdd_~n) (not (= isOdd_~n 1))) (not (<= |isOdd_#in~n| 2147483647)) (not (<= 0 |isOdd_#in~n|))) [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 23) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2019-11-19 19:53:24,142 INFO L444 ceAbstractionStarter]: For program point isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L447 ceAbstractionStarter]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 47) no Hoare annotation was computed. [2019-11-19 19:53:24,143 INFO L440 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~n~0)) [2019-11-19 19:53:24,143 INFO L444 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-19 19:53:24,144 INFO L444 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-11-19 19:53:24,144 INFO L440 ceAbstractionStarter]: At program point L37(lines 37 48) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2019-11-19 19:53:24,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:24 BoogieIcfgContainer [2019-11-19 19:53:24,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:53:24,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:53:24,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:53:24,157 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:53:24,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:18" (3/4) ... [2019-11-19 19:53:24,161 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 19:53:24,167 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isEven [2019-11-19 19:53:24,167 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isOdd [2019-11-19 19:53:24,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 19:53:24,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 19:53:24,221 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:53:24,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:53:24,224 INFO L168 Benchmark]: Toolchain (without parser) took 6883.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 963.1 MB in the beginning and 905.3 MB in the end (delta: 57.7 MB). Peak memory consumption was 255.9 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,224 INFO L168 Benchmark]: CDTParser took 0.54 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 19:53:24,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.62 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,226 INFO L168 Benchmark]: Boogie Preprocessor took 15.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,227 INFO L168 Benchmark]: RCFGBuilder took 270.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,228 INFO L168 Benchmark]: TraceAbstraction took 6151.77 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 905.3 MB in the end (delta: 195.0 MB). Peak memory consumption was 258.4 MB. Max. memory is 11.5 GB. [2019-11-19 19:53:24,228 INFO L168 Benchmark]: Witness Printer took 64.42 ms. Allocated memory is still 1.2 GB. Free memory is still 905.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:53:24,234 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 291.62 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 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 82.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 270.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6151.77 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 905.3 MB in the end (delta: 195.0 MB). Peak memory consumption was 258.4 MB. Max. memory is 11.5 GB. * Witness Printer took 64.42 ms. Allocated memory is still 1.2 GB. Free memory is still 905.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 37]: Loop Invariant Derived loop invariant: n <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 4 error locations. Result: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 98 SDtfs, 273 SDslu, 683 SDs, 0 SdLazy, 1062 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 22 PreInvPairs, 23 NumberOfFragments, 52 HoareAnnotationTreeSize, 22 FomulaSimplifications, 988 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 99740 SizeOfPredicates, 42 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 80/568 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...