./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/TwoWay.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dd635190a9aa277670265f46b90ecce0c321a2a9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:52:36,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:52:36,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:52:36,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:52:36,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:52:36,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:52:36,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:52:36,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:52:36,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:52:36,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:52:36,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:52:36,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:52:36,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:52:36,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:52:36,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:52:36,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:52:36,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:52:36,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:52:36,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:52:36,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:52:36,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:52:36,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:52:36,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:52:36,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:52:36,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:52:36,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:52:36,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:52:36,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:52:36,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:52:36,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:52:36,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:52:36,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:52:36,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:52:36,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:52:36,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:52:36,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:52:36,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:52:36,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:52:36,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:52:36,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:52:36,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:52:36,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:52:36,445 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:52:36,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:52:36,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:52:36,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:52:36,448 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:52:36,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:52:36,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:52:36,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:52:36,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:52:36,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:52:36,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:52:36,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:52:36,450 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:52:36,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:52:36,450 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:52:36,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:52:36,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:52:36,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:52:36,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:52:36,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:52:36,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:52:36,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:52:36,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:52:36,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:52:36,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:52:36,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:52:36,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:52:36,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2019-11-28 02:52:36,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:52:36,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:52:36,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:52:36,769 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:52:36,770 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:52:36,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-28 02:52:36,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d20842/57ff34b423e94940afcc44dd447e0621/FLAG9b149abf0 [2019-11-28 02:52:37,347 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:52:37,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-28 02:52:37,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d20842/57ff34b423e94940afcc44dd447e0621/FLAG9b149abf0 [2019-11-28 02:52:37,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d20842/57ff34b423e94940afcc44dd447e0621 [2019-11-28 02:52:37,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:52:37,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:52:37,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:37,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:52:37,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:52:37,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:37,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5323c1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37, skipping insertion in model container [2019-11-28 02:52:37,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:37,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:52:37,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:52:37,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:37,962 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:52:37,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:37,993 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:52:37,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37 WrapperNode [2019-11-28 02:52:37,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:37,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:37,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:52:37,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:52:38,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:38,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:52:38,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:52:38,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:52:38,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (1/1) ... [2019-11-28 02:52:38,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:52:38,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:52:38,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:52:38,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:52:38,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (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 02:52:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2019-11-28 02:52:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2019-11-28 02:52:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:52:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:52:38,408 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:52:38,408 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:52:38,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:38 BoogieIcfgContainer [2019-11-28 02:52:38,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:52:38,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:52:38,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:52:38,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:52:38,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:37" (1/3) ... [2019-11-28 02:52:38,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ccefb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:38, skipping insertion in model container [2019-11-28 02:52:38,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:37" (2/3) ... [2019-11-28 02:52:38,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ccefb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:38, skipping insertion in model container [2019-11-28 02:52:38,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:38" (3/3) ... [2019-11-28 02:52:38,428 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2019-11-28 02:52:38,439 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:52:38,446 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 02:52:38,471 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 02:52:38,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:52:38,504 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:52:38,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:52:38,504 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:52:38,504 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:52:38,505 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:52:38,505 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:52:38,505 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:52:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-28 02:52:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:52:38,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:38,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:38,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:38,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2019-11-28 02:52:38,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:38,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841759509] [2019-11-28 02:52:38,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:38,763 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 02:52:38,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841759509] [2019-11-28 02:52:38,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:38,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:52:38,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369921457] [2019-11-28 02:52:38,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:52:38,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:52:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:52:38,792 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2019-11-28 02:52:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:39,058 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-11-28 02:52:39,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:52:39,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-28 02:52:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:39,072 INFO L225 Difference]: With dead ends: 56 [2019-11-28 02:52:39,072 INFO L226 Difference]: Without dead ends: 51 [2019-11-28 02:52:39,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:52:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-28 02:52:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2019-11-28 02:52:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 02:52:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-28 02:52:39,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2019-11-28 02:52:39,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:39,128 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 02:52:39,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:52:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-11-28 02:52:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:52:39,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:39,130 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:39,130 INFO L410 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2019-11-28 02:52:39,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:39,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616323087] [2019-11-28 02:52:39,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:39,171 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 02:52:39,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616323087] [2019-11-28 02:52:39,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:39,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:52:39,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109621387] [2019-11-28 02:52:39,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:52:39,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:39,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:52:39,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:52:39,179 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-28 02:52:39,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:39,204 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-28 02:52:39,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:52:39,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 02:52:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:39,205 INFO L225 Difference]: With dead ends: 45 [2019-11-28 02:52:39,206 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 02:52:39,208 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:52:39,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 02:52:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 02:52:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:52:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-28 02:52:39,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2019-11-28 02:52:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:39,213 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-28 02:52:39,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:52:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-28 02:52:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:52:39,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:39,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:39,215 INFO L410 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2019-11-28 02:52:39,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:39,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249907397] [2019-11-28 02:52:39,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:39,315 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 02:52:39,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249907397] [2019-11-28 02:52:39,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:39,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:52:39,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10783886] [2019-11-28 02:52:39,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:52:39,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:39,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:52:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:52:39,321 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-28 02:52:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:39,444 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-11-28 02:52:39,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:52:39,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-28 02:52:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:39,446 INFO L225 Difference]: With dead ends: 35 [2019-11-28 02:52:39,446 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 02:52:39,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:52:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 02:52:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-11-28 02:52:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 02:52:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-28 02:52:39,455 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2019-11-28 02:52:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:39,457 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-28 02:52:39,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:52:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-28 02:52:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:52:39,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:39,458 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:39,459 INFO L410 AbstractCegarLoop]: === Iteration 4 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2019-11-28 02:52:39,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:39,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123668915] [2019-11-28 02:52:39,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:39,489 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:39,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206675043] [2019-11-28 02:52:39,489 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 02:52:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:39,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:52:39,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:39,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123668915] [2019-11-28 02:52:39,683 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:39,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206675043] [2019-11-28 02:52:39,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:39,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-28 02:52:39,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243772069] [2019-11-28 02:52:39,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:52:39,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:52:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:52:39,695 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2019-11-28 02:52:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:39,912 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-28 02:52:39,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:52:39,913 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-28 02:52:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:39,915 INFO L225 Difference]: With dead ends: 36 [2019-11-28 02:52:39,915 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:52:39,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:52:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:52:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-11-28 02:52:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 02:52:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-28 02:52:39,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2019-11-28 02:52:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:39,936 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-28 02:52:39,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:52:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-28 02:52:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:52:39,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:39,939 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:40,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:40,143 INFO L410 AbstractCegarLoop]: === Iteration 5 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:40,144 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2019-11-28 02:52:40,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:40,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242897417] [2019-11-28 02:52:40,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:40,156 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:40,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585580484] [2019-11-28 02:52:40,157 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 02:52:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:40,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:52:40,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:40,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242897417] [2019-11-28 02:52:40,308 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:40,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585580484] [2019-11-28 02:52:40,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:40,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-28 02:52:40,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342579275] [2019-11-28 02:52:40,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:52:40,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:52:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:52:40,311 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2019-11-28 02:52:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:40,539 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-28 02:52:40,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 02:52:40,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-28 02:52:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:40,542 INFO L225 Difference]: With dead ends: 37 [2019-11-28 02:52:40,542 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:52:40,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:52:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:52:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-28 02:52:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 02:52:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-28 02:52:40,553 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2019-11-28 02:52:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:40,553 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-28 02:52:40,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:52:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-28 02:52:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-28 02:52:40,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:40,555 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:40,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:40,760 INFO L410 AbstractCegarLoop]: === Iteration 6 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2019-11-28 02:52:40,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:40,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058735593] [2019-11-28 02:52:40,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:40,779 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:40,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276826489] [2019-11-28 02:52:40,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:40,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-28 02:52:40,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 02:52:40,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058735593] [2019-11-28 02:52:40,993 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:40,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276826489] [2019-11-28 02:52:40,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:40,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-28 02:52:40,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013251544] [2019-11-28 02:52:40,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:52:40,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:40,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:52:40,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:52:40,997 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 11 states. [2019-11-28 02:52:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:41,341 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-28 02:52:41,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:52:41,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2019-11-28 02:52:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:41,343 INFO L225 Difference]: With dead ends: 41 [2019-11-28 02:52:41,344 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 02:52:41,344 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:52:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 02:52:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-28 02:52:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 02:52:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-28 02:52:41,351 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2019-11-28 02:52:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:41,352 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-28 02:52:41,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:52:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-28 02:52:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 02:52:41,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:41,353 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:41,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:41,557 INFO L410 AbstractCegarLoop]: === Iteration 7 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1175573436, now seen corresponding path program 1 times [2019-11-28 02:52:41,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:41,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361726587] [2019-11-28 02:52:41,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:41,572 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:41,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524179134] [2019-11-28 02:52:41,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:52:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:41,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 02:52:41,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:52:41,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361726587] [2019-11-28 02:52:41,800 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:41,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524179134] [2019-11-28 02:52:41,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:41,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-28 02:52:41,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688363637] [2019-11-28 02:52:41,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 02:52:41,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 02:52:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:52:41,803 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2019-11-28 02:52:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:42,179 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-28 02:52:42,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:52:42,180 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-28 02:52:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:42,181 INFO L225 Difference]: With dead ends: 40 [2019-11-28 02:52:42,181 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 02:52:42,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2019-11-28 02:52:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 02:52:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 02:52:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:52:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-28 02:52:42,191 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2019-11-28 02:52:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:42,191 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-28 02:52:42,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 02:52:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-28 02:52:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 02:52:42,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:42,196 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:42,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:42,400 INFO L410 AbstractCegarLoop]: === Iteration 8 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1112227299, now seen corresponding path program 2 times [2019-11-28 02:52:42,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:42,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248899953] [2019-11-28 02:52:42,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:42,416 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:42,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496474450] [2019-11-28 02:52:42,417 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 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 02:52:42,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:52:42,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:52:42,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-28 02:52:42,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 02:52:42,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248899953] [2019-11-28 02:52:42,904 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:42,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496474450] [2019-11-28 02:52:42,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:42,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2019-11-28 02:52:42,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781503431] [2019-11-28 02:52:42,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-28 02:52:42,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:42,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-28 02:52:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2019-11-28 02:52:42,907 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 29 states. [2019-11-28 02:52:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:43,818 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2019-11-28 02:52:43,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-28 02:52:43,819 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2019-11-28 02:52:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:43,821 INFO L225 Difference]: With dead ends: 69 [2019-11-28 02:52:43,822 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 02:52:43,824 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2019-11-28 02:52:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 02:52:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2019-11-28 02:52:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 02:52:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2019-11-28 02:52:43,834 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 50 [2019-11-28 02:52:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:43,835 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2019-11-28 02:52:43,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-28 02:52:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2019-11-28 02:52:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-28 02:52:43,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:43,837 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:44,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:44,040 INFO L410 AbstractCegarLoop]: === Iteration 9 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2019-11-28 02:52:44,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:44,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767250846] [2019-11-28 02:52:44,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:44,054 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:44,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009439165] [2019-11-28 02:52:44,055 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 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 02:52:44,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:52:44,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:52:44,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 02:52:44,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 02:52:44,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767250846] [2019-11-28 02:52:44,237 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:44,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009439165] [2019-11-28 02:52:44,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:44,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-28 02:52:44,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673350737] [2019-11-28 02:52:44,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:52:44,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:44,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:52:44,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:52:44,240 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 15 states. [2019-11-28 02:52:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:44,537 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-11-28 02:52:44,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:52:44,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-28 02:52:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:44,541 INFO L225 Difference]: With dead ends: 58 [2019-11-28 02:52:44,541 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 02:52:44,542 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2019-11-28 02:52:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 02:52:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-28 02:52:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 02:52:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-28 02:52:44,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 39 [2019-11-28 02:52:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:44,552 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-28 02:52:44,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:52:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-28 02:52:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-28 02:52:44,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:44,554 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:44,756 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:44,757 INFO L410 AbstractCegarLoop]: === Iteration 10 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1459996636, now seen corresponding path program 3 times [2019-11-28 02:52:44,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:44,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749577536] [2019-11-28 02:52:44,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:44,778 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 02:52:44,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461963700] [2019-11-28 02:52:44,779 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 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 02:52:46,493 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:52:46,493 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:52:46,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-28 02:52:46,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-28 02:52:46,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749577536] [2019-11-28 02:52:46,741 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 02:52:46,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461963700] [2019-11-28 02:52:46,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:52:46,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-11-28 02:52:46,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393061885] [2019-11-28 02:52:46,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:52:46,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:46,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:52:46,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:52:46,746 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 13 states. [2019-11-28 02:52:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:47,033 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-28 02:52:47,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:52:47,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2019-11-28 02:52:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:47,035 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:52:47,035 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:52:47,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2019-11-28 02:52:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:52:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:52:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:52:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:52:47,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-28 02:52:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:47,037 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:52:47,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:52:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:52:47,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:52:47,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:47,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 02:52:47,415 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2019-11-28 02:52:47,419 INFO L246 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-11-28 02:52:47,419 INFO L242 CegarLoopResult]: At program point L31-2(lines 31 35) the Hoare annotation is: (let ((.cse0 (not (<= 1 |twoWay_#in~terminate|)))) (and (or (and (<= 0 twoWay_~n) (<= twoWay_~n |twoWay_#in~n|)) .cse0 (not (<= |twoWay_#in~n| 2147483646))) (or (not (<= |twoWay_#in~n| 2147483647)) (and (= |twoWay_#in~n| (+ twoWay_~m~0 1)) (<= |twoWay_#in~n| twoWay_~n) (<= 1 twoWay_~terminate) (<= twoWay_~n 2147483647)) .cse0))) [2019-11-28 02:52:47,419 INFO L246 CegarLoopResult]: For program point L27(lines 27 37) no Hoare annotation was computed. [2019-11-28 02:52:47,419 INFO L246 CegarLoopResult]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:52:47,419 INFO L246 CegarLoopResult]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2019-11-28 02:52:47,419 INFO L246 CegarLoopResult]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L246 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-28 02:52:47,420 INFO L249 CegarLoopResult]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L242 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2019-11-28 02:52:47,421 INFO L246 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-28 02:52:47,422 INFO L246 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2019-11-28 02:52:47,422 INFO L242 CegarLoopResult]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-28 02:52:47,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:52:47 BoogieIcfgContainer [2019-11-28 02:52:47,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:52:47,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:52:47,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:52:47,438 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:52:47,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:38" (3/4) ... [2019-11-28 02:52:47,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:52:47,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2019-11-28 02:52:47,453 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 02:52:47,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 02:52:47,497 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:52:47,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:52:47,499 INFO L168 Benchmark]: Toolchain (without parser) took 9813.57 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 266.3 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -239.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,499 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:47,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.87 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:47,501 INFO L168 Benchmark]: Boogie Preprocessor took 86.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,502 INFO L168 Benchmark]: RCFGBuilder took 299.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,503 INFO L168 Benchmark]: TraceAbstraction took 9025.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,504 INFO L168 Benchmark]: Witness Printer took 59.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:47,507 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.87 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 299.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9025.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 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: 36]: 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: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Result: SAFE, OverallTime: 8.7s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 124 SDtfs, 793 SDslu, 579 SDs, 0 SdLazy, 1326 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 14 PreInvPairs, 18 NumberOfFragments, 52 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 269 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 259 ConstructedInterpolants, 9 QuantifiedInterpolants, 52216 SizeOfPredicates, 46 NumberOfNonLiveVariables, 669 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 194/322 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...