./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loop-lit/gsv2008.c.i.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 ............................................................................................................................................................................................................................................................................................................... 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 17:06:44,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:44,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:44,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:44,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:44,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:44,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:44,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:44,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:44,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:44,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:44,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:44,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:44,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:44,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:44,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:44,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:44,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:44,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:44,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:44,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:44,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:44,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:44,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:44,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:44,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:44,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:44,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:44,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:44,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:44,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:44,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:44,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:44,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:44,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:44,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:44,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:44,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:44,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:44,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:44,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:44,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:44,468 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:44,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:44,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:44,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:44,470 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:44,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:44,471 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:44,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:44,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:44,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:44,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:44,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:44,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:44,473 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:44,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:44,473 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:44,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:44,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:44,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:44,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:44,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:44,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:44,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:44,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:44,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:44,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:44,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:44,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:44,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:44,477 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 [2019-11-28 17:06:44,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:44,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:44,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:44,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:44,814 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:44,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-11-28 17:06:44,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d747e0b9/5089b719652b4907944ec5204369ad02/FLAG8533a74fc [2019-11-28 17:06:45,338 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:45,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-11-28 17:06:45,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d747e0b9/5089b719652b4907944ec5204369ad02/FLAG8533a74fc [2019-11-28 17:06:45,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d747e0b9/5089b719652b4907944ec5204369ad02 [2019-11-28 17:06:45,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:45,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:45,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:45,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:45,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:45,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:45" (1/1) ... [2019-11-28 17:06:45,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177923f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:45, skipping insertion in model container [2019-11-28 17:06:45,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:45" (1/1) ... [2019-11-28 17:06:45,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:45,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:46,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:46,057 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:46,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:46,093 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:46,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46 WrapperNode [2019-11-28 17:06:46,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:46,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:46,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:46,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:46,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:46,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:46,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:46,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:46,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (1/1) ... [2019-11-28 17:06:46,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:46,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:46,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:46,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:46,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (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 17:06:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:46,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:46,411 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:46,411 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 17:06:46,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:46 BoogieIcfgContainer [2019-11-28 17:06:46,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:46,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:46,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:46,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:46,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:45" (1/3) ... [2019-11-28 17:06:46,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9188f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:46, skipping insertion in model container [2019-11-28 17:06:46,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:46" (2/3) ... [2019-11-28 17:06:46,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9188f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:46, skipping insertion in model container [2019-11-28 17:06:46,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:46" (3/3) ... [2019-11-28 17:06:46,421 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2019-11-28 17:06:46,429 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:46,435 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:46,447 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:46,473 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:46,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:46,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:46,474 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:46,474 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:46,474 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:46,474 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:46,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:46,490 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:06:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:46,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:46,496 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:46,496 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2019-11-28 17:06:46,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:46,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171328110] [2019-11-28 17:06:46,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:46,695 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 17:06:46,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171328110] [2019-11-28 17:06:46,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:46,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:06:46,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104286928] [2019-11-28 17:06:46,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:06:46,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:46,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:06:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:46,743 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-28 17:06:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:46,774 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-28 17:06:46,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:06:46,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 17:06:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:46,788 INFO L225 Difference]: With dead ends: 21 [2019-11-28 17:06:46,789 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:06:46,793 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 17:06:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:06:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:06:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:06:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:06:46,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:06:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:46,823 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:06:46,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:06:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:06:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:06:46,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:46,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:46,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:46,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:46,825 INFO L82 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2019-11-28 17:06:46,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:46,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348703678] [2019-11-28 17:06:46,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:46,893 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 17:06:46,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348703678] [2019-11-28 17:06:46,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255112198] [2019-11-28 17:06:46,895 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 17:06:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:46,931 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 17:06:46,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:46,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:47,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 17:06:47,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-28 17:06:47,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123057979] [2019-11-28 17:06:47,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:06:47,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:06:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:06:47,004 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-11-28 17:06:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:47,038 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-11-28 17:06:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:06:47,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 17:06:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:47,040 INFO L225 Difference]: With dead ends: 9 [2019-11-28 17:06:47,040 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:47,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:06:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:47,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 17:06:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:47,043 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:47,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:06:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:47,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:47,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:47,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:47,285 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:47,286 INFO L242 CegarLoopResult]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-11-28 17:06:47,286 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 17:06:47,286 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:47,286 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:47,287 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-11-28 17:06:47,287 INFO L246 CegarLoopResult]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-11-28 17:06:47,287 INFO L249 CegarLoopResult]: At program point L49(lines 8 55) the Hoare annotation is: true [2019-11-28 17:06:47,287 INFO L246 CegarLoopResult]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-11-28 17:06:47,287 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-28 17:06:47,287 INFO L246 CegarLoopResult]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-11-28 17:06:47,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:47 BoogieIcfgContainer [2019-11-28 17:06:47,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:47,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:47,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:47,306 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:47,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:46" (3/4) ... [2019-11-28 17:06:47,310 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:47,321 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:06:47,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:47,367 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:47,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:47,370 INFO L168 Benchmark]: Toolchain (without parser) took 1601.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -108.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:47,371 INFO L168 Benchmark]: CDTParser took 0.87 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 17:06:47,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 946.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:47,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:47,373 INFO L168 Benchmark]: Boogie Preprocessor took 16.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:47,374 INFO L168 Benchmark]: RCFGBuilder took 218.30 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:47,375 INFO L168 Benchmark]: TraceAbstraction took 890.80 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:47,375 INFO L168 Benchmark]: Witness Printer took 62.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:47,379 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 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 323.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 946.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 218.30 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 890.80 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 62.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 5 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 4 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...