./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.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 554582d6fc3de8e87f5dd30e5019302b6e1b96be .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:52:02,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:52:02,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:52:02,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:52:02,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:52:02,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:52:02,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:52:02,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:52:02,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:52:02,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:52:02,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:52:02,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:52:02,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:52:02,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:52:02,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:52:02,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:52:02,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:52:02,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:52:02,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:52:02,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:52:02,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:52:02,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:52:02,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:52:02,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:52:02,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:52:02,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:52:02,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:52:02,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:52:02,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:52:02,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:52:02,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:52:02,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:52:02,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:52:02,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:52:02,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:52:02,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:52:02,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:52:02,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:52:02,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:52:02,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:52:02,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:52:02,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:52:02,706 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:52:02,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:52:02,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:52:02,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:52:02,710 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:52:02,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:52:02,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:52:02,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:52:02,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:52:02,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:52:02,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:52:02,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:52:02,713 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:52:02,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:52:02,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:52:02,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:52:02,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:52:02,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:52:02,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:52:02,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:52:02,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:52:02,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:52:02,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:52:02,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:52:02,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:52:02,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:52:02,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:52:02,718 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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-11-28 02:52:03,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:52:03,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:52:03,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:52:03,079 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:52:03,079 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:52:03,080 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:52:03,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5906f059c/728ef5d8e353493e8aa06d8e618f0d56/FLAG81074280f [2019-11-28 02:52:03,584 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:52:03,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:52:03,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5906f059c/728ef5d8e353493e8aa06d8e618f0d56/FLAG81074280f [2019-11-28 02:52:03,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5906f059c/728ef5d8e353493e8aa06d8e618f0d56 [2019-11-28 02:52:03,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:52:03,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:52:03,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:03,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:52:03,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:52:03,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:03" (1/1) ... [2019-11-28 02:52:03,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c50309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:03, skipping insertion in model container [2019-11-28 02:52:03,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:03" (1/1) ... [2019-11-28 02:52:03,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:52:04,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:52:04,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:04,246 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:52:04,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:52:04,284 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:52:04,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04 WrapperNode [2019-11-28 02:52:04,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:52:04,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:04,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:52:04,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:52:04,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:52:04,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:52:04,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:52:04,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:52:04,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (1/1) ... [2019-11-28 02:52:04,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:52:04,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:52:04,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:52:04,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:52:04,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (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 02:52:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-11-28 02:52:04,465 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-11-28 02:52:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:52:04,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:52:04,673 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:52:04,673 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:52:04,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:04 BoogieIcfgContainer [2019-11-28 02:52:04,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:52:04,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:52:04,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:52:04,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:52:04,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:03" (1/3) ... [2019-11-28 02:52:04,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b89d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:04, skipping insertion in model container [2019-11-28 02:52:04,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:04" (2/3) ... [2019-11-28 02:52:04,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b89d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:04, skipping insertion in model container [2019-11-28 02:52:04,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:04" (3/3) ... [2019-11-28 02:52:04,683 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:52:04,695 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:52:04,702 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:52:04,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:52:04,771 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:52:04,771 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:52:04,772 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:52:04,772 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:52:04,772 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:52:04,772 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:52:04,772 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:52:04,773 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:52:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-28 02:52:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:52:04,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:04,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:52:04,807 INFO L410 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:04,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2019-11-28 02:52:04,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:04,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656697811] [2019-11-28 02:52:04,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,034 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 02:52:05,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656697811] [2019-11-28 02:52:05,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:05,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:52:05,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837033643] [2019-11-28 02:52:05,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:52:05,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:05,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:52:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:52:05,062 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-11-28 02:52:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:05,208 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2019-11-28 02:52:05,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:52:05,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-28 02:52:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:05,220 INFO L225 Difference]: With dead ends: 44 [2019-11-28 02:52:05,220 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 02:52:05,224 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 02:52:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 02:52:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2019-11-28 02:52:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 02:52:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-28 02:52:05,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2019-11-28 02:52:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:05,257 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-28 02:52:05,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:52:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-28 02:52:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:52:05,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:05,258 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:05,259 INFO L410 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2019-11-28 02:52:05,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:05,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784158984] [2019-11-28 02:52:05,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,313 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 02:52:05,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784158984] [2019-11-28 02:52:05,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:05,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:52:05,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187948616] [2019-11-28 02:52:05,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:52:05,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:52:05,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:05,317 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-11-28 02:52:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:05,330 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-28 02:52:05,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:52:05,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 02:52:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:05,332 INFO L225 Difference]: With dead ends: 19 [2019-11-28 02:52:05,333 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 02:52:05,334 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 02:52:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 02:52:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:52:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 02:52:05,340 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2019-11-28 02:52:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:05,340 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 02:52:05,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:52:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-28 02:52:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:52:05,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:05,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:05,342 INFO L410 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2019-11-28 02:52:05,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:05,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194425582] [2019-11-28 02:52:05,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,388 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 02:52:05,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194425582] [2019-11-28 02:52:05,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:05,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:52:05,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948613097] [2019-11-28 02:52:05,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:52:05,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:05,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:52:05,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:52:05,392 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-28 02:52:05,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:05,495 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-11-28 02:52:05,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:52:05,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 02:52:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:05,499 INFO L225 Difference]: With dead ends: 30 [2019-11-28 02:52:05,499 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:52:05,501 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 02:52:05,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:52:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-11-28 02:52:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:52:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-28 02:52:05,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-11-28 02:52:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:05,516 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 02:52:05,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:52:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-28 02:52:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:52:05,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:05,520 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:05,520 INFO L410 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2019-11-28 02:52:05,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:05,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043462246] [2019-11-28 02:52:05,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,580 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 02:52:05,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043462246] [2019-11-28 02:52:05,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:52:05,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:52:05,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447930228] [2019-11-28 02:52:05,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:52:05,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:05,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:52:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:05,584 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-11-28 02:52:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:05,602 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-28 02:52:05,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:52:05,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 02:52:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:05,604 INFO L225 Difference]: With dead ends: 24 [2019-11-28 02:52:05,604 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 02:52:05,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:52:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 02:52:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 02:52:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:52:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-28 02:52:05,617 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2019-11-28 02:52:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:05,617 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-28 02:52:05,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:52:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-28 02:52:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:52:05,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:05,618 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:05,619 INFO L410 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2019-11-28 02:52:05,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:05,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62059405] [2019-11-28 02:52:05,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:05,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62059405] [2019-11-28 02:52:05,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67382528] [2019-11-28 02:52:05,692 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 02:52:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:05,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:52:05,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:52:05,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:52:05,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657221235] [2019-11-28 02:52:05,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:52:05,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:52:05,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:52:05,780 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2019-11-28 02:52:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:05,911 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-28 02:52:05,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:52:05,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-28 02:52:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:05,913 INFO L225 Difference]: With dead ends: 45 [2019-11-28 02:52:05,914 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 02:52:05,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:52:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 02:52:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2019-11-28 02:52:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 02:52:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-28 02:52:05,924 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2019-11-28 02:52:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:05,925 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-28 02:52:05,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:52:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-28 02:52:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:52:05,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:05,926 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:06,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:06,137 INFO L410 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2019-11-28 02:52:06,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:06,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335687588] [2019-11-28 02:52:06,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:06,236 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 02:52:06,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335687588] [2019-11-28 02:52:06,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667599540] [2019-11-28 02:52:06,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:06,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:52:06,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:06,284 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 02:52:06,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:52:06,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:52:06,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704486790] [2019-11-28 02:52:06,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:52:06,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:52:06,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:52:06,287 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2019-11-28 02:52:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:06,419 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2019-11-28 02:52:06,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:52:06,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-28 02:52:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:06,421 INFO L225 Difference]: With dead ends: 67 [2019-11-28 02:52:06,422 INFO L226 Difference]: Without dead ends: 65 [2019-11-28 02:52:06,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:52:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-28 02:52:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2019-11-28 02:52:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 02:52:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-11-28 02:52:06,432 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2019-11-28 02:52:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:06,433 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-11-28 02:52:06,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:52:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-11-28 02:52:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:52:06,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:06,435 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:06,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:06,639 INFO L410 AbstractCegarLoop]: === Iteration 7 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2019-11-28 02:52:06,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:06,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443957242] [2019-11-28 02:52:06,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:06,730 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 02:52:06,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443957242] [2019-11-28 02:52:06,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166630818] [2019-11-28 02:52:06,731 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 02:52:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:06,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:52:06,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:06,773 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 02:52:06,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:52:06,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:52:06,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052312005] [2019-11-28 02:52:06,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:52:06,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:06,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:52:06,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:52:06,777 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2019-11-28 02:52:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:06,880 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-11-28 02:52:06,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:52:06,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-28 02:52:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:06,883 INFO L225 Difference]: With dead ends: 53 [2019-11-28 02:52:06,884 INFO L226 Difference]: Without dead ends: 52 [2019-11-28 02:52:06,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:52:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-28 02:52:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2019-11-28 02:52:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 02:52:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-11-28 02:52:06,905 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2019-11-28 02:52:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:06,906 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-11-28 02:52:06,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:52:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-11-28 02:52:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:52:06,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:52:06,909 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:52:07,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:07,115 INFO L410 AbstractCegarLoop]: === Iteration 8 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:52:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:52:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2019-11-28 02:52:07,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:52:07,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912376873] [2019-11-28 02:52:07,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:52:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:07,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912376873] [2019-11-28 02:52:07,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496358577] [2019-11-28 02:52:07,235 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 02:52:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:52:07,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:52:07,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:52:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:52:07,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:52:07,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 02:52:07,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065587788] [2019-11-28 02:52:07,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:52:07,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:52:07,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:52:07,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:52:07,284 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2019-11-28 02:52:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:52:07,563 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-28 02:52:07,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:52:07,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-28 02:52:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:52:07,565 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:52:07,565 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:52:07,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:52:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:52:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:52:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:52:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:52:07,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-28 02:52:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:52:07,568 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:52:07,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:52:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:52:07,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:52:07,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:52:07,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 02:52:08,090 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2019-11-28 02:52:08,175 INFO L246 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2019-11-28 02:52:08,175 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-28 02:52:08,175 INFO L246 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-28 02:52:08,175 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-28 02:52:08,175 INFO L249 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2019-11-28 02:52:08,176 INFO L242 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483646)) .cse0 (<= p_~n 2147483646) .cse1) (or (and (<= p_~n 2147483647) (<= p_~m 2147483647) (<= p_~r 2147483647) (<= 1 p_~n)) (not (<= |p_#in~n| 2147483647)) .cse0 .cse1))) [2019-11-28 02:52:08,176 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 02:52:08,176 INFO L246 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-11-28 02:52:08,176 INFO L246 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2019-11-28 02:52:08,176 INFO L246 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-28 02:52:08,176 INFO L246 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 02:52:08,176 INFO L242 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483646)) .cse0 (<= p_~n 2147483646) .cse1) (or (not (<= |p_#in~n| 2147483647)) (and (<= p_~n 2147483647) (<= 1 p_~r) (<= p_~m 2147483647) (<= p_~r 2147483647)) .cse0 .cse1))) [2019-11-28 02:52:08,177 INFO L246 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-11-28 02:52:08,178 INFO L246 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-28 02:52:08,178 INFO L246 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-28 02:52:08,178 INFO L246 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-28 02:52:08,178 INFO L246 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2019-11-28 02:52:08,179 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 02:52:08,179 INFO L242 CegarLoopResult]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2019-11-28 02:52:08,179 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 02:52:08,179 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647)) [2019-11-28 02:52:08,179 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 02:52:08,180 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-11-28 02:52:08,180 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-11-28 02:52:08,180 INFO L246 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2019-11-28 02:52:08,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:52:08 BoogieIcfgContainer [2019-11-28 02:52:08,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:52:08,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:52:08,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:52:08,199 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:52:08,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:04" (3/4) ... [2019-11-28 02:52:08,204 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:52:08,211 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2019-11-28 02:52:08,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 02:52:08,218 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 02:52:08,284 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:52:08,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:52:08,287 INFO L168 Benchmark]: Toolchain (without parser) took 4313.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 953.7 MB in the beginning and 844.6 MB in the end (delta: 109.1 MB). Peak memory consumption was 232.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:08,288 INFO L168 Benchmark]: CDTParser took 0.21 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 02:52:08,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.39 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:08,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:08,298 INFO L168 Benchmark]: Boogie Preprocessor took 81.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:08,300 INFO L168 Benchmark]: RCFGBuilder took 266.33 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: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:08,302 INFO L168 Benchmark]: TraceAbstraction took 3522.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 844.6 MB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:52:08,304 INFO L168 Benchmark]: Witness Printer took 85.72 ms. Allocated memory is still 1.2 GB. Free memory is still 844.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:52:08,311 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 312.39 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 266.33 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: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3522.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 844.6 MB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 11.5 GB. * Witness Printer took 85.72 ms. Allocated memory is still 1.2 GB. Free memory is still 844.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, 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, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2246 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 271 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4106 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 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...