./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/terminator_03-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f6fb2bb1 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/loops/terminator_03-2.i -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 a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 18:50:53,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 18:50:53,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 18:50:53,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 18:50:53,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 18:50:53,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 18:50:53,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 18:50:53,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 18:50:53,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 18:50:53,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 18:50:53,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 18:50:53,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 18:50:53,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 18:50:53,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 18:50:53,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 18:50:53,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 18:50:53,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 18:50:53,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 18:50:53,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 18:50:53,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 18:50:53,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 18:50:53,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 18:50:53,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 18:50:53,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 18:50:53,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 18:50:53,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 18:50:53,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 18:50:53,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 18:50:53,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 18:50:53,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 18:50:53,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 18:50:53,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 18:50:53,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 18:50:53,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 18:50:53,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 18:50:53,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 18:50:53,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 18:50:53,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 18:50:53,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 18:50:53,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 18:50:53,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 18:50:53,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 18:50:53,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 18:50:53,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 18:50:53,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 18:50:53,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 18:50:53,753 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 18:50:53,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 18:50:53,753 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 18:50:53,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 18:50:53,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 18:50:53,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 18:50:53,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 18:50:53,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 18:50:53,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 18:50:53,755 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 18:50:53,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 18:50:53,756 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 18:50:53,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 18:50:53,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 18:50:53,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 18:50:53,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 18:50:53,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 18:50:53,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 18:50:53,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 18:50:53,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 18:50:53,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 18:50:53,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 18:50:53,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 18:50:53,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 18:50:53,760 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 -> a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f [2019-11-19 18:50:54,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 18:50:54,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 18:50:54,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 18:50:54,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 18:50:54,084 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 18:50:54,085 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_03-2.i [2019-11-19 18:50:54,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ff10934/c89ec53a949a43a2b76b65cdd9877150/FLAG029add8da [2019-11-19 18:50:54,600 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 18:50:54,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_03-2.i [2019-11-19 18:50:54,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ff10934/c89ec53a949a43a2b76b65cdd9877150/FLAG029add8da [2019-11-19 18:50:55,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ff10934/c89ec53a949a43a2b76b65cdd9877150 [2019-11-19 18:50:55,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 18:50:55,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 18:50:55,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 18:50:55,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 18:50:55,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 18:50:55,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f19266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55, skipping insertion in model container [2019-11-19 18:50:55,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,042 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 18:50:55,058 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 18:50:55,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:50:55,250 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 18:50:55,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:50:55,275 INFO L192 MainTranslator]: Completed translation [2019-11-19 18:50:55,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55 WrapperNode [2019-11-19 18:50:55,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 18:50:55,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 18:50:55,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 18:50:55,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 18:50:55,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 18:50:55,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 18:50:55,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 18:50:55,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 18:50:55,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (1/1) ... [2019-11-19 18:50:55,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 18:50:55,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 18:50:55,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 18:50:55,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 18:50:55,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (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 [2019-11-19 18:50:55,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 18:50:55,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 18:50:55,587 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 18:50:55,588 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 18:50:55,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:55 BoogieIcfgContainer [2019-11-19 18:50:55,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 18:50:55,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 18:50:55,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 18:50:55,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 18:50:55,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:50:55" (1/3) ... [2019-11-19 18:50:55,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d343e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:55, skipping insertion in model container [2019-11-19 18:50:55,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:55" (2/3) ... [2019-11-19 18:50:55,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d343e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:55, skipping insertion in model container [2019-11-19 18:50:55,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:55" (3/3) ... [2019-11-19 18:50:55,597 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2019-11-19 18:50:55,607 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 18:50:55,612 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 18:50:55,627 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 18:50:55,651 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 18:50:55,651 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 18:50:55,651 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 18:50:55,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 18:50:55,652 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 18:50:55,652 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 18:50:55,652 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 18:50:55,652 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 18:50:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-19 18:50:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 18:50:55,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:50:55,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 18:50:55,669 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:50:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:50:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-11-19 18:50:55,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:50:55,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923271529] [2019-11-19 18:50:55,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:50:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:50:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:50:55,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923271529] [2019-11-19 18:50:55,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:50:55,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 18:50:55,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974907775] [2019-11-19 18:50:55,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 18:50:55,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:50:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 18:50:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 18:50:55,886 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-19 18:50:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:50:55,968 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-19 18:50:55,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 18:50:55,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-19 18:50:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:50:55,980 INFO L225 Difference]: With dead ends: 29 [2019-11-19 18:50:55,980 INFO L226 Difference]: Without dead ends: 8 [2019-11-19 18:50:55,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 18:50:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-19 18:50:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-19 18:50:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 18:50:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-19 18:50:56,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-19 18:50:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:50:56,014 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-19 18:50:56,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 18:50:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-19 18:50:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 18:50:56,014 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:50:56,014 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:50:56,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:50:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:50:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1484065106, now seen corresponding path program 1 times [2019-11-19 18:50:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:50:56,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459601385] [2019-11-19 18:50:56,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:50:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:50:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:50:56,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459601385] [2019-11-19 18:50:56,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:50:56,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 18:50:56,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456386533] [2019-11-19 18:50:56,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 18:50:56,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:50:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 18:50:56,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 18:50:56,084 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-11-19 18:50:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:50:56,116 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-19 18:50:56,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 18:50:56,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-19 18:50:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:50:56,117 INFO L225 Difference]: With dead ends: 8 [2019-11-19 18:50:56,117 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 18:50:56,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 18:50:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 18:50:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 18:50:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 18:50:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 18:50:56,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-19 18:50:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:50:56,120 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 18:50:56,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 18:50:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 18:50:56,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 18:50:56,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 18:50:56,150 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 18:50:56,150 INFO L447 ceAbstractionStarter]: At program point L21(lines 11 22) the Hoare annotation is: true [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-19 18:50:56,151 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-19 18:50:56,152 INFO L440 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (< 0 ULTIMATE.start_main_~y~0) [2019-11-19 18:50:56,152 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-19 18:50:56,152 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-19 18:50:56,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:50:56 BoogieIcfgContainer [2019-11-19 18:50:56,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 18:50:56,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 18:50:56,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 18:50:56,170 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 18:50:56,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:55" (3/4) ... [2019-11-19 18:50:56,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 18:50:56,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-19 18:50:56,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 18:50:56,235 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 18:50:56,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 18:50:56,238 INFO L168 Benchmark]: Toolchain (without parser) took 1211.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -119.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-19 18:50:56,238 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. [2019-11-19 18:50:56,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 18:50:56,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 18:50:56,240 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 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. [2019-11-19 18:50:56,241 INFO L168 Benchmark]: RCFGBuilder took 215.20 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-11-19 18:50:56,242 INFO L168 Benchmark]: TraceAbstraction took 578.10 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-11-19 18:50:56,243 INFO L168 Benchmark]: Witness Printer took 66.05 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. [2019-11-19 18:50:56,248 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 250.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.91 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 215.20 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 578.10 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 66.05 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: 5]: 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: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 23 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...