./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash bec5669c6fe02e51518958076fea4487ada345cf ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:53:22,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:53:22,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:53:22,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:53:22,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:53:22,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:53:22,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:53:22,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:53:22,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:53:22,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:53:22,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:53:22,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:53:22,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:53:22,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:53:22,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:53:22,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:53:22,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:53:22,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:53:22,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:53:22,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:53:22,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:53:22,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:53:22,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:53:22,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:53:22,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:53:22,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:53:22,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:53:22,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:53:22,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:53:22,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:53:22,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:53:22,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:53:22,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:53:22,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:53:22,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:53:22,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:53:22,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:53:22,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:53:22,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:53:22,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:53:22,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:53:22,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 02:53:22,089 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:53:22,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:53:22,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:53:22,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:53:22,091 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:53:22,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:53:22,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:53:22,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:53:22,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:53:22,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:53:22,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:53:22,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:53:22,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:53:22,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:53:22,094 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:53:22,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:53:22,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:53:22,095 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:53:22,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:53:22,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:53:22,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:53:22,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:53:22,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:53:22,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:53:22,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:53:22,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:53:22,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:53:22,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:53:22,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:53:22,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:53:22,099 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bec5669c6fe02e51518958076fea4487ada345cf [2019-11-28 02:53:22,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:53:22,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:53:22,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:53:22,449 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:53:22,450 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:53:22,451 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2019-11-28 02:53:22,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e3036d1/f1f3b885ae244beeb52f44eaa4337255/FLAGd3ffc2777 [2019-11-28 02:53:22,979 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:53:22,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2019-11-28 02:53:22,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e3036d1/f1f3b885ae244beeb52f44eaa4337255/FLAGd3ffc2777 [2019-11-28 02:53:23,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e3036d1/f1f3b885ae244beeb52f44eaa4337255 [2019-11-28 02:53:23,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:53:23,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:53:23,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:53:23,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:53:23,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:53:23,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a27607f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23, skipping insertion in model container [2019-11-28 02:53:23,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:53:23,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:53:23,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:53:23,650 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:53:23,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:53:23,688 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:53:23,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23 WrapperNode [2019-11-28 02:53:23,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:53:23,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:53:23,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:53:23,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:53:23,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:53:23,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:53:23,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:53:23,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:53:23,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... [2019-11-28 02:53:23,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:53:23,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:53:23,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:53:23,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:53:23,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:53:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-11-28 02:53:23,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-11-28 02:53:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-11-28 02:53:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-11-28 02:53:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:53:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:53:24,126 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:53:24,131 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:53:24,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:24 BoogieIcfgContainer [2019-11-28 02:53:24,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:53:24,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:53:24,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:53:24,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:53:24,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:53:23" (1/3) ... [2019-11-28 02:53:24,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a59649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:24, skipping insertion in model container [2019-11-28 02:53:24,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:23" (2/3) ... [2019-11-28 02:53:24,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a59649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:24, skipping insertion in model container [2019-11-28 02:53:24,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:24" (3/3) ... [2019-11-28 02:53:24,153 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2019-11-28 02:53:24,174 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:53:24,181 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:53:24,195 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:53:24,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:53:24,225 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:53:24,225 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:53:24,225 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:53:24,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:53:24,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:53:24,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:53:24,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:53:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-28 02:53:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:53:24,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:24,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:24,248 INFO L410 AbstractCegarLoop]: === Iteration 1 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2104858774, now seen corresponding path program 1 times [2019-11-28 02:53:24,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:24,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220772437] [2019-11-28 02:53:24,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:24,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220772437] [2019-11-28 02:53:24,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:24,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:53:24,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250138886] [2019-11-28 02:53:24,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:53:24,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:24,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:53:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:53:24,503 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-11-28 02:53:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:24,644 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-28 02:53:24,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:53:24,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 02:53:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:24,656 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:53:24,657 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 02:53:24,661 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 [2019-11-28 02:53:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 02:53:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2019-11-28 02:53:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:53:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-28 02:53:24,710 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2019-11-28 02:53:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:24,710 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-28 02:53:24,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:53:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-28 02:53:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:53:24,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:24,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:24,712 INFO L410 AbstractCegarLoop]: === Iteration 2 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:24,713 INFO L82 PathProgramCache]: Analyzing trace with hash 826112612, now seen corresponding path program 1 times [2019-11-28 02:53:24,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:24,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306480282] [2019-11-28 02:53:24,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:24,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306480282] [2019-11-28 02:53:24,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:24,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:53:24,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210365001] [2019-11-28 02:53:24,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:53:24,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:53:24,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:53:24,754 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2019-11-28 02:53:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:24,795 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-28 02:53:24,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:53:24,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 02:53:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:24,797 INFO L225 Difference]: With dead ends: 26 [2019-11-28 02:53:24,797 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 02:53:24,798 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 [2019-11-28 02:53:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 02:53:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-28 02:53:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:53:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-28 02:53:24,805 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2019-11-28 02:53:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:24,805 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-28 02:53:24,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:53:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-28 02:53:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:53:24,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:24,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:24,807 INFO L410 AbstractCegarLoop]: === Iteration 3 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash -345822603, now seen corresponding path program 1 times [2019-11-28 02:53:24,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:24,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831534110] [2019-11-28 02:53:24,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:24,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831534110] [2019-11-28 02:53:24,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:24,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:53:24,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063852753] [2019-11-28 02:53:24,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:53:24,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:24,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:53:24,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:53:24,873 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2019-11-28 02:53:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:24,953 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-28 02:53:24,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:53:24,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 02:53:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:24,955 INFO L225 Difference]: With dead ends: 24 [2019-11-28 02:53:24,955 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 02:53:24,956 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 [2019-11-28 02:53:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 02:53:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 02:53:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 02:53:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 02:53:24,962 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-28 02:53:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:24,963 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 02:53:24,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:53:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 02:53:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 02:53:24,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:24,964 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:24,965 INFO L410 AbstractCegarLoop]: === Iteration 4 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:24,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2130566059, now seen corresponding path program 1 times [2019-11-28 02:53:24,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:24,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721867900] [2019-11-28 02:53:24,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721867900] [2019-11-28 02:53:25,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:53:25,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:53:25,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025854121] [2019-11-28 02:53:25,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:53:25,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:25,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:53:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:53:25,036 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-11-28 02:53:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:25,131 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-28 02:53:25,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:53:25,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-28 02:53:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:25,132 INFO L225 Difference]: With dead ends: 30 [2019-11-28 02:53:25,133 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:53:25,134 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 [2019-11-28 02:53:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:53:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-28 02:53:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:53:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-28 02:53:25,141 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 14 [2019-11-28 02:53:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:25,141 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-28 02:53:25,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:53:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-28 02:53:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:53:25,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:25,143 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:25,144 INFO L410 AbstractCegarLoop]: === Iteration 5 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:25,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1256120232, now seen corresponding path program 1 times [2019-11-28 02:53:25,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:25,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214434398] [2019-11-28 02:53:25,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214434398] [2019-11-28 02:53:25,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085934421] [2019-11-28 02:53:25,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:53:25,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:25,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 02:53:25,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505056712] [2019-11-28 02:53:25,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:53:25,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:25,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:53:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:53:25,360 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-11-28 02:53:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:25,511 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2019-11-28 02:53:25,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:53:25,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-28 02:53:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:25,512 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:53:25,513 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:53:25,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:53:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:53:25,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-28 02:53:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 02:53:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2019-11-28 02:53:25,521 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 20 [2019-11-28 02:53:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:25,521 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2019-11-28 02:53:25,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:53:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2019-11-28 02:53:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-28 02:53:25,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:25,523 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:53:25,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:25,727 INFO L410 AbstractCegarLoop]: === Iteration 6 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 507937609, now seen corresponding path program 1 times [2019-11-28 02:53:25,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:25,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632078800] [2019-11-28 02:53:25,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632078800] [2019-11-28 02:53:25,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31213045] [2019-11-28 02:53:25,845 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) [2019-11-28 02:53:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:25,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:25,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:25,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 02:53:25,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527174325] [2019-11-28 02:53:25,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:53:25,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:53:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:53:25,909 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2019-11-28 02:53:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:26,074 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-28 02:53:26,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:53:26,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-28 02:53:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:26,076 INFO L225 Difference]: With dead ends: 42 [2019-11-28 02:53:26,076 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 02:53:26,076 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 [2019-11-28 02:53:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 02:53:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-28 02:53:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 02:53:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-28 02:53:26,084 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2019-11-28 02:53:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,085 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-28 02:53:26,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:53:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-28 02:53:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-28 02:53:26,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,087 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-28 02:53:26,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:26,289 INFO L410 AbstractCegarLoop]: === Iteration 7 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:26,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1150777420, now seen corresponding path program 2 times [2019-11-28 02:53:26,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:26,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237040781] [2019-11-28 02:53:26,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237040781] [2019-11-28 02:53:26,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599873048] [2019-11-28 02:53:26,459 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) [2019-11-28 02:53:26,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:53:26,489 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:26,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:53:26,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:26,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:26,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 02:53:26,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509087649] [2019-11-28 02:53:26,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:53:26,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:53:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:53:26,525 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2019-11-28 02:53:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:26,710 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-28 02:53:26,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:53:26,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-28 02:53:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:26,712 INFO L225 Difference]: With dead ends: 48 [2019-11-28 02:53:26,712 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 02:53:26,712 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 [2019-11-28 02:53:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 02:53:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-28 02:53:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 02:53:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-28 02:53:26,719 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2019-11-28 02:53:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:26,719 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-28 02:53:26,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:53:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-28 02:53:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 02:53:26,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:26,721 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-28 02:53:26,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:26,925 INFO L410 AbstractCegarLoop]: === Iteration 8 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1724912701, now seen corresponding path program 2 times [2019-11-28 02:53:26,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:26,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352787694] [2019-11-28 02:53:26,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352787694] [2019-11-28 02:53:27,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197137878] [2019-11-28 02:53:27,154 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 [2019-11-28 02:53:27,182 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:53:27,183 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:27,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:53:27,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:27,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 02:53:27,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917261972] [2019-11-28 02:53:27,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:53:27,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:27,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:53:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:53:27,224 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 15 states. [2019-11-28 02:53:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:27,468 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-28 02:53:27,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 02:53:27,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2019-11-28 02:53:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:27,471 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:53:27,471 INFO L226 Difference]: Without dead ends: 53 [2019-11-28 02:53:27,472 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 [2019-11-28 02:53:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-28 02:53:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-28 02:53:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:53:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-28 02:53:27,483 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 38 [2019-11-28 02:53:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:27,483 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-28 02:53:27,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:53:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-28 02:53:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-28 02:53:27,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:27,485 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-11-28 02:53:27,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:27,694 INFO L410 AbstractCegarLoop]: === Iteration 9 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 790987328, now seen corresponding path program 3 times [2019-11-28 02:53:27,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:27,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055351387] [2019-11-28 02:53:27,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:27,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055351387] [2019-11-28 02:53:27,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747517296] [2019-11-28 02:53:27,958 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 [2019-11-28 02:53:28,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:53:28,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:28,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 02:53:28,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:28,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:28,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 02:53:28,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098748995] [2019-11-28 02:53:28,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 02:53:28,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:28,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 02:53:28,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:53:28,031 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 17 states. [2019-11-28 02:53:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:28,279 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2019-11-28 02:53:28,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 02:53:28,279 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2019-11-28 02:53:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:28,280 INFO L225 Difference]: With dead ends: 60 [2019-11-28 02:53:28,281 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 02:53:28,281 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 [2019-11-28 02:53:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 02:53:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-28 02:53:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 02:53:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2019-11-28 02:53:28,289 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 44 [2019-11-28 02:53:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:28,289 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2019-11-28 02:53:28,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 02:53:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2019-11-28 02:53:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 02:53:28,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:28,291 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-28 02:53:28,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:28,496 INFO L410 AbstractCegarLoop]: === Iteration 10 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:28,496 INFO L82 PathProgramCache]: Analyzing trace with hash 845403953, now seen corresponding path program 3 times [2019-11-28 02:53:28,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:28,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563086702] [2019-11-28 02:53:28,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:28,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563086702] [2019-11-28 02:53:28,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657220006] [2019-11-28 02:53:28,710 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 [2019-11-28 02:53:28,746 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:53:28,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:28,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 02:53:28,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:28,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:28,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 02:53:28,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746804978] [2019-11-28 02:53:28,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 02:53:28,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 02:53:28,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:53:28,767 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 19 states. [2019-11-28 02:53:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:29,071 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2019-11-28 02:53:29,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 02:53:29,071 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2019-11-28 02:53:29,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:29,073 INFO L225 Difference]: With dead ends: 66 [2019-11-28 02:53:29,073 INFO L226 Difference]: Without dead ends: 65 [2019-11-28 02:53:29,074 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 [2019-11-28 02:53:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-28 02:53:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-28 02:53:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-28 02:53:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-28 02:53:29,084 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2019-11-28 02:53:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:29,084 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-28 02:53:29,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 02:53:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-28 02:53:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-28 02:53:29,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:53:29,086 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2019-11-28 02:53:29,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:29,289 INFO L410 AbstractCegarLoop]: === Iteration 11 === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:53:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:53:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1529856460, now seen corresponding path program 4 times [2019-11-28 02:53:29,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:53:29,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443384256] [2019-11-28 02:53:29,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:53:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:53:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:53:29,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443384256] [2019-11-28 02:53:29,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764760196] [2019-11-28 02:53:29,561 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 [2019-11-28 02:53:29,610 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:53:29,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:53:29,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-28 02:53:29,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:53:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-28 02:53:29,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:53:29,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 24 [2019-11-28 02:53:29,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257549655] [2019-11-28 02:53:29,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 02:53:29,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:53:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 02:53:29,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2019-11-28 02:53:29,757 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 25 states. [2019-11-28 02:53:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:53:29,899 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-28 02:53:29,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:53:29,899 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2019-11-28 02:53:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:53:29,900 INFO L225 Difference]: With dead ends: 64 [2019-11-28 02:53:29,900 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:53:29,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2019-11-28 02:53:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:53:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:53:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:53:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:53:29,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-28 02:53:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:53:29,902 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:53:29,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 02:53:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:53:29,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:53:30,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:53:30,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 02:53:30,310 INFO L246 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-28 02:53:30,310 INFO L246 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-28 02:53:30,310 INFO L242 CegarLoopResult]: 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))) [2019-11-28 02:53:30,310 INFO L246 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2019-11-28 02:53:30,310 INFO L246 CegarLoopResult]: For program point L32-3(line 32) no Hoare annotation was computed. [2019-11-28 02:53:30,310 INFO L246 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L249 CegarLoopResult]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 02:53:30,311 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L242 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (and (not (= isOdd_~n 0)) (<= isOdd_~n 2147483647) (<= 0 isOdd_~n) (not (= isOdd_~n 1))) (not (<= |isOdd_#in~n| 2147483647)) (not (<= 0 |isOdd_#in~n|))) [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L246 CegarLoopResult]: For program point isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 02:53:30,312 INFO L249 CegarLoopResult]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point L44(lines 44 48) no Hoare annotation was computed. [2019-11-28 02:53:30,313 INFO L242 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~n~0)) [2019-11-28 02:53:30,313 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-28 02:53:30,314 INFO L246 CegarLoopResult]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-11-28 02:53:30,314 INFO L242 CegarLoopResult]: At program point L37(lines 37 49) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2019-11-28 02:53:30,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:53:30 BoogieIcfgContainer [2019-11-28 02:53:30,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:53:30,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:53:30,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:53:30,330 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:53:30,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:24" (3/4) ... [2019-11-28 02:53:30,335 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:53:30,340 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isEven [2019-11-28 02:53:30,340 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isOdd [2019-11-28 02:53:30,345 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 02:53:30,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 02:53:30,393 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:53:30,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:53:30,396 INFO L168 Benchmark]: Toolchain (without parser) took 7026.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 961.7 MB in the beginning and 908.7 MB in the end (delta: 53.0 MB). Peak memory consumption was 244.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,396 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:53:30,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,398 INFO L168 Benchmark]: Boogie Preprocessor took 20.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,398 INFO L168 Benchmark]: RCFGBuilder took 334.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,399 INFO L168 Benchmark]: TraceAbstraction took 6195.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 176.7 MB). Peak memory consumption was 245.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,400 INFO L168 Benchmark]: Witness Printer took 63.64 ms. Allocated memory is still 1.2 GB. Free memory was 916.2 MB in the beginning and 908.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:53:30,404 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 319.54 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 87.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 334.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6195.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 176.7 MB). Peak memory consumption was 245.3 MB. Max. memory is 11.5 GB. * Witness Printer took 63.64 ms. Allocated memory is still 1.2 GB. Free memory was 916.2 MB in the beginning and 908.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. 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: 5.8s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 97 SDtfs, 273 SDslu, 681 SDs, 0 SdLazy, 1065 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, 1.7s 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 22 PreInvPairs, 23 NumberOfFragments, 52 HoareAnnotationTreeSize, 22 FomulaSimplifications, 1033 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.0s 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...