./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/count_by_1.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 43bf08ab7eab650af2134651dc434d79e4859447 .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:02:50,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:02:50,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:02:50,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:02:50,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:02:50,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:02:50,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:02:50,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:02:50,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:02:50,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:02:50,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:02:50,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:02:50,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:02:50,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:02:50,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:02:50,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:02:50,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:02:50,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:02:50,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:02:50,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:02:50,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:02:50,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:02:50,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:02:50,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:02:50,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:02:50,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:02:50,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:02:50,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:02:50,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:02:50,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:02:50,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:02:50,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:02:50,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:02:50,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:02:50,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:02:50,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:02:50,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:02:50,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:02:50,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:02:50,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:02:50,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:02:50,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:02:50,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:02:50,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:02:50,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:02:50,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:02:50,979 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:02:50,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:02:50,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:02:50,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:02:50,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:02:50,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:02:50,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:02:50,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:02:50,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:02:50,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:02:50,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:02:50,981 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:02:50,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:02:50,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:02:50,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:02:50,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:02:50,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:02:50,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:02:50,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:02:50,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:02:50,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:02:50,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:02:50,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:02:50,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:02:50,984 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 -> 43bf08ab7eab650af2134651dc434d79e4859447 [2019-11-28 00:02:51,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:02:51,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:02:51,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:02:51,297 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:02:51,297 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:02:51,298 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1.i [2019-11-28 00:02:51,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43bb30c2/29329491dbf64ee59d6d34f99a985602/FLAG26cac1d5b [2019-11-28 00:02:51,855 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:02:51,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1.i [2019-11-28 00:02:51,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43bb30c2/29329491dbf64ee59d6d34f99a985602/FLAG26cac1d5b [2019-11-28 00:02:52,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43bb30c2/29329491dbf64ee59d6d34f99a985602 [2019-11-28 00:02:52,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:02:52,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:02:52,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:52,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:02:52,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:02:52,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8bcb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52, skipping insertion in model container [2019-11-28 00:02:52,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:02:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:02:52,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:52,479 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:02:52,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:52,503 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:02:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52 WrapperNode [2019-11-28 00:02:52,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:52,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:52,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:02:52,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:02:52,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:52,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:02:52,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:02:52,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:02:52,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (1/1) ... [2019-11-28 00:02:52,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:02:52,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:02:52,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:02:52,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:02:52,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (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 00:02:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:02:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:02:52,827 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:02:52,827 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:02:52,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:52 BoogieIcfgContainer [2019-11-28 00:02:52,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:02:52,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:02:52,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:02:52,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:02:52,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:02:52" (1/3) ... [2019-11-28 00:02:52,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574114e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:52, skipping insertion in model container [2019-11-28 00:02:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:52" (2/3) ... [2019-11-28 00:02:52,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574114e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:52, skipping insertion in model container [2019-11-28 00:02:52,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:52" (3/3) ... [2019-11-28 00:02:52,836 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2019-11-28 00:02:52,846 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:02:52,853 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:02:52,865 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:02:52,889 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:02:52,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:02:52,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:02:52,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:02:52,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:02:52,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:02:52,890 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:02:52,890 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:02:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 00:02:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:02:52,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:52,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:02:52,907 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash 29776202, now seen corresponding path program 1 times [2019-11-28 00:02:52,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:52,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040742516] [2019-11-28 00:02:52,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:53,038 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 00:02:53,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040742516] [2019-11-28 00:02:53,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:53,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:02:53,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068990332] [2019-11-28 00:02:53,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 00:02:53,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 00:02:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 00:02:53,067 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-28 00:02:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:53,162 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-28 00:02:53,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 00:02:53,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 00:02:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:53,181 INFO L225 Difference]: With dead ends: 21 [2019-11-28 00:02:53,181 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 00:02:53,193 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 00:02:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 00:02:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-28 00:02:53,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 00:02:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 00:02:53,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-11-28 00:02:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:53,274 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 00:02:53,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 00:02:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 00:02:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:02:53,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:53,275 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:53,276 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:53,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1396608660, now seen corresponding path program 1 times [2019-11-28 00:02:53,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:53,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778787229] [2019-11-28 00:02:53,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:53,343 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 00:02:53,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778787229] [2019-11-28 00:02:53,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63304821] [2019-11-28 00:02:53,345 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 00:02:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:53,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 00:02:53,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:53,421 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 00:02:53,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:53,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 00:02:53,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083572908] [2019-11-28 00:02:53,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:02:53,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:53,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:02:53,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:02:53,425 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-28 00:02:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:53,460 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-28 00:02:53,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:02:53,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 00:02:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:53,462 INFO L225 Difference]: With dead ends: 15 [2019-11-28 00:02:53,462 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 00:02:53,463 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:02:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 00:02:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-28 00:02:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 00:02:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-28 00:02:53,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-11-28 00:02:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:53,467 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-28 00:02:53,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:02:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-28 00:02:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 00:02:53,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:53,468 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-28 00:02:53,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:53,671 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893618, now seen corresponding path program 2 times [2019-11-28 00:02:53,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:53,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874787195] [2019-11-28 00:02:53,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 00:02:53,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874787195] [2019-11-28 00:02:53,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:53,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 00:02:53,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472495532] [2019-11-28 00:02:53,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:02:53,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:02:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:02:53,789 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2019-11-28 00:02:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:53,828 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-28 00:02:53,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:02:53,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-28 00:02:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:53,829 INFO L225 Difference]: With dead ends: 10 [2019-11-28 00:02:53,829 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:02:53,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:02:53,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:02:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:02:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:02:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:02:53,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-28 00:02:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:53,832 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:02:53,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:02:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:02:53,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:02:53,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:02:53,862 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:02:53,862 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:02:53,862 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:02:53,862 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:02:53,863 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:02:53,863 INFO L249 CegarLoopResult]: At program point L14(lines 10 15) the Hoare annotation is: true [2019-11-28 00:02:53,863 INFO L246 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-28 00:02:53,864 INFO L242 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-11-28 00:02:53,864 INFO L246 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2019-11-28 00:02:53,864 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:02:53,864 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 00:02:53,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:02:53 BoogieIcfgContainer [2019-11-28 00:02:53,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:02:53,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:02:53,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:02:53,883 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:02:53,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:52" (3/4) ... [2019-11-28 00:02:53,887 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:02:53,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:02:53,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:02:53,939 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:02:53,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:02:53,942 INFO L168 Benchmark]: Toolchain (without parser) took 1654.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -105.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:53,943 INFO L168 Benchmark]: CDTParser took 0.18 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 00:02:53,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.84 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 00:02:53,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:53,945 INFO L168 Benchmark]: Boogie Preprocessor took 15.95 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 00:02:53,946 INFO L168 Benchmark]: RCFGBuilder took 216.65 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:53,947 INFO L168 Benchmark]: TraceAbstraction took 1052.59 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:53,948 INFO L168 Benchmark]: Witness Printer took 57.23 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:53,952 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 215.84 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 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.95 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 216.65 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1052.59 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.23 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: 6.6 MB). Peak memory consumption was 6.6 MB. 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 8 SDslu, 11 SDs, 0 SdLazy, 29 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...