./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c 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/Urban-WST2013-Fig2-modified1000.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 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:48,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:48,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:48,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:48,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:48,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:48,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:48,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:48,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:48,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:48,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:48,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:48,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:48,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:48,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:48,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:48,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:48,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:48,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:48,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:48,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:48,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:48,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:48,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:48,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:48,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:48,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:48,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:48,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:48,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:48,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:48,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:48,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:48,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:48,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:48,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:48,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:48,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:48,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:48,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:48,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:48,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:48,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:48,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:48,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:48,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:48,650 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:48,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:48,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:48,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:48,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:48,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:48,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:48,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:48,653 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:48,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:48,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:48,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:48,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:48,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:48,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:48,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:48,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:48,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:48,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:48,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:48,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:48,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:48,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:48,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:48,658 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 -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2019-11-28 20:24:49,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:49,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:49,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:49,043 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:49,044 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:49,045 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2019-11-28 20:24:49,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81eddba30/ba20b5423407426c831240a25dd2d954/FLAG15d03bb5e [2019-11-28 20:24:49,516 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:49,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2019-11-28 20:24:49,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81eddba30/ba20b5423407426c831240a25dd2d954/FLAG15d03bb5e [2019-11-28 20:24:49,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81eddba30/ba20b5423407426c831240a25dd2d954 [2019-11-28 20:24:49,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:49,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:49,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:49,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:49,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:49,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:49" (1/1) ... [2019-11-28 20:24:49,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286e58b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:49, skipping insertion in model container [2019-11-28 20:24:49,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:49" (1/1) ... [2019-11-28 20:24:49,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:49,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:50,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:50,195 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:50,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:50,221 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:50,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50 WrapperNode [2019-11-28 20:24:50,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:50,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:50,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:50,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:50,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:50,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:50,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:50,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:50,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (1/1) ... [2019-11-28 20:24:50,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:50,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:50,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:50,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:50,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (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 20:24:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:50,577 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:50,577 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:24:50,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:50 BoogieIcfgContainer [2019-11-28 20:24:50,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:50,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:50,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:50,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:50,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:49" (1/3) ... [2019-11-28 20:24:50,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9ce966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:50, skipping insertion in model container [2019-11-28 20:24:50,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:50" (2/3) ... [2019-11-28 20:24:50,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9ce966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:50, skipping insertion in model container [2019-11-28 20:24:50,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:50" (3/3) ... [2019-11-28 20:24:50,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000.c [2019-11-28 20:24:50,599 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:50,606 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:24:50,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:24:50,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:50,653 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:50,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:50,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:50,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:50,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:50,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:50,655 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 20:24:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:50,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:50,688 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:50,688 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:50,697 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2019-11-28 20:24:50,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:50,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674098109] [2019-11-28 20:24:50,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:50,854 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 20:24:50,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674098109] [2019-11-28 20:24:50,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:50,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:50,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66208550] [2019-11-28 20:24:50,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:50,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:50,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:50,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:50,874 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-28 20:24:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:50,936 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-11-28 20:24:50,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:50,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:50,948 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:24:50,948 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:24:50,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:24:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:24:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:24:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:24:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 20:24:50,979 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-28 20:24:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:50,979 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 20:24:50,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 20:24:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:24:50,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:50,980 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:24:50,981 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-28 20:24:50,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:50,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239655267] [2019-11-28 20:24:50,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,002 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 20:24:51,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239655267] [2019-11-28 20:24:51,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:51,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:51,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544171972] [2019-11-28 20:24:51,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:51,006 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-28 20:24:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,030 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 20:24:51,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:24:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,031 INFO L225 Difference]: With dead ends: 15 [2019-11-28 20:24:51,031 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:24:51,032 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 20:24:51,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:24:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 20:24:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:24:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 20:24:51,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-28 20:24:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,036 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 20:24:51,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 20:24:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:51,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,037 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:51,037 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2019-11-28 20:24:51,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11055109] [2019-11-28 20:24:51,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11055109] [2019-11-28 20:24:51,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627501778] [2019-11-28 20:24:51,089 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 20:24:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,120 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:24:51,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:51,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:51,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2019-11-28 20:24:51,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903360400] [2019-11-28 20:24:51,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,156 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-11-28 20:24:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,169 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-28 20:24:51,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 20:24:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,172 INFO L225 Difference]: With dead ends: 13 [2019-11-28 20:24:51,172 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 20:24:51,173 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 20:24:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 20:24:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:24:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-28 20:24:51,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2019-11-28 20:24:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,182 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-28 20:24:51,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-28 20:24:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:51,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:51,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:51,385 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash 784508327, now seen corresponding path program 1 times [2019-11-28 20:24:51,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925360609] [2019-11-28 20:24:51,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:51,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925360609] [2019-11-28 20:24:51,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135780798] [2019-11-28 20:24:51,426 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 20:24:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,452 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:24:51,453 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:51,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:51,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2019-11-28 20:24:51,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605719700] [2019-11-28 20:24:51,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,488 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2019-11-28 20:24:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,499 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-28 20:24:51,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 20:24:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,501 INFO L225 Difference]: With dead ends: 12 [2019-11-28 20:24:51,501 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 20:24:51,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 20:24:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:24:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:24:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-28 20:24:51,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-11-28 20:24:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,506 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-28 20:24:51,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-28 20:24:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:51,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,507 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-28 20:24:51,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:51,711 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash 784510025, now seen corresponding path program 1 times [2019-11-28 20:24:51,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460073094] [2019-11-28 20:24:51,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:24:51,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460073094] [2019-11-28 20:24:51,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:51,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:24:51,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778471760] [2019-11-28 20:24:51,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:24:51,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:51,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:24:51,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:24:51,748 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-11-28 20:24:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,776 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-28 20:24:51,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:24:51,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 20:24:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,778 INFO L225 Difference]: With dead ends: 11 [2019-11-28 20:24:51,778 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:24:51,779 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 20:24:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:24:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:24:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:24:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:24:51,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 20:24:51,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,780 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:24:51,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:24:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:24:51,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:24:51,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:24:51,836 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:51,837 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:24:51,837 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-28 20:24:51,837 INFO L242 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x1~0 10) (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) (<= ULTIMATE.start_main_~x2~0 1000)) [2019-11-28 20:24:51,837 INFO L246 CegarLoopResult]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2019-11-28 20:24:51,838 INFO L242 CegarLoopResult]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) [2019-11-28 20:24:51,839 INFO L246 CegarLoopResult]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L249 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: true [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-28 20:24:51,840 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 20:24:51,841 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-28 20:24:51,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:51 BoogieIcfgContainer [2019-11-28 20:24:51,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:51,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:51,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:51,865 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:51,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:50" (3/4) ... [2019-11-28 20:24:51,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:24:51,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:24:51,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 20:24:51,966 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:51,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:51,969 INFO L168 Benchmark]: Toolchain (without parser) took 2021.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 959.0 MB in the beginning and 969.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,969 INFO L168 Benchmark]: CDTParser took 0.28 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 20:24:51,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.24 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -112.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,971 INFO L168 Benchmark]: Boogie Preprocessor took 20.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,972 INFO L168 Benchmark]: RCFGBuilder took 233.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,973 INFO L168 Benchmark]: TraceAbstraction took 1284.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 976.5 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,973 INFO L168 Benchmark]: Witness Printer took 101.08 ms. Allocated memory is still 1.1 GB. Free memory was 976.5 MB in the beginning and 969.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:51,977 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 272.24 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 65.0 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -112.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 233.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1284.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 976.5 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 11.5 GB. * Witness Printer took 101.08 ms. Allocated memory is still 1.1 GB. Free memory was 976.5 MB in the beginning and 969.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 1000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 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...