./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/jm2006.i --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/jm2006.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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 17:06:57,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:57,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:57,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:57,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:57,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:57,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:57,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:57,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:57,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:57,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:57,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:57,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:57,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:57,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:57,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:57,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:57,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:57,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:57,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:57,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:57,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:57,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:57,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:57,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:57,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:57,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:57,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:57,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:57,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:57,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:57,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:57,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:57,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:57,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:57,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:57,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:57,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:57,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:57,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:57,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:57,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:58,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:58,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:58,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:58,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:58,021 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:58,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:58,021 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:58,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:58,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:58,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:58,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:58,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:58,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:58,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:58,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:58,025 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:58,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:58,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:58,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:58,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:58,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:58,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:58,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:58,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:58,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:58,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:58,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:58,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:58,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:58,030 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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2019-11-28 17:06:58,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:58,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:58,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:58,345 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:58,345 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:58,346 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/jm2006.i [2019-11-28 17:06:58,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2102f6bb/950363aea9884da1b9ddacc0dd6d5ce6/FLAGd6a31590e [2019-11-28 17:06:58,884 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:58,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/jm2006.i [2019-11-28 17:06:58,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2102f6bb/950363aea9884da1b9ddacc0dd6d5ce6/FLAGd6a31590e [2019-11-28 17:06:59,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2102f6bb/950363aea9884da1b9ddacc0dd6d5ce6 [2019-11-28 17:06:59,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:59,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:59,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:59,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:59,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:59,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1192613d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59, skipping insertion in model container [2019-11-28 17:06:59,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:59,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:59,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:59,518 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:59,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:59,566 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:59,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59 WrapperNode [2019-11-28 17:06:59,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:59,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:59,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:59,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:59,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:59,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:59,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:59,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:59,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (1/1) ... [2019-11-28 17:06:59,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:59,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:59,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:59,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:59,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (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 17:06:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:59,974 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:59,975 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:06:59,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:59 BoogieIcfgContainer [2019-11-28 17:06:59,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:59,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:59,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:59,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:59,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:59" (1/3) ... [2019-11-28 17:06:59,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3a8ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:59, skipping insertion in model container [2019-11-28 17:06:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:59" (2/3) ... [2019-11-28 17:06:59,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3a8ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:59, skipping insertion in model container [2019-11-28 17:06:59,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:59" (3/3) ... [2019-11-28 17:06:59,985 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2019-11-28 17:06:59,995 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:07:00,002 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:07:00,015 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:07:00,041 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:07:00,041 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:07:00,041 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:07:00,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:07:00,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:07:00,042 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:07:00,042 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:07:00,043 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:07:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:07:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:07:00,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:07:00,065 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:07:00,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:07:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:07:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash 922201356, now seen corresponding path program 1 times [2019-11-28 17:07:00,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:07:00,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458583677] [2019-11-28 17:07:00,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:07:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:00,202 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 17:07:00,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458583677] [2019-11-28 17:07:00,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:07:00,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:07:00,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603883512] [2019-11-28 17:07:00,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:07:00,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:07:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:07:00,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:07:00,229 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:07:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:07:00,245 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-11-28 17:07:00,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:07:00,247 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:07:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:07:00,254 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:07:00,254 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:07:00,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:07:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:07:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:07:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:07:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 17:07:00,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2019-11-28 17:07:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:07:00,292 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 17:07:00,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:07:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 17:07:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:07:00,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:07:00,293 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:07:00,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:07:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:07:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash 922082192, now seen corresponding path program 1 times [2019-11-28 17:07:00,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:07:00,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159820420] [2019-11-28 17:07:00,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:07:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:00,449 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 17:07:00,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159820420] [2019-11-28 17:07:00,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:07:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:07:00,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897684377] [2019-11-28 17:07:00,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:07:00,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:07:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:07:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:07:00,454 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-28 17:07:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:07:00,645 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 17:07:00,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:07:00,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-28 17:07:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:07:00,647 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:07:00,647 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:07:00,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:07:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:07:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:07:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:07:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 17:07:00,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 17:07:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:07:00,653 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 17:07:00,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:07:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 17:07:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:07:00,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:07:00,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:07:00,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:07:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:07:00,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1478617325, now seen corresponding path program 1 times [2019-11-28 17:07:00,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:07:00,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163627643] [2019-11-28 17:07:00,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:07:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:00,812 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 17:07:00,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163627643] [2019-11-28 17:07:00,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722887296] [2019-11-28 17:07:00,813 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 17:07:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:00,865 WARN L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 17:07:00,873 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:07:00,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:07:00,984 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 17:07:00,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:07:00,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-28 17:07:00,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021065986] [2019-11-28 17:07:00,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 17:07:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:07:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 17:07:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:07:00,988 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 9 states. [2019-11-28 17:07:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:07:01,088 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 17:07:01,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:07:01,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2019-11-28 17:07:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:07:01,090 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:07:01,090 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:07:01,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:07:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:07:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:07:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:07:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:07:01,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:07:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:07:01,100 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:07:01,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 17:07:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:07:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:07:01,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:07:01,102 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 17:07:01,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:07:01,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:07:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:07:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1409108976, now seen corresponding path program 2 times [2019-11-28 17:07:01,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:07:01,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542621530] [2019-11-28 17:07:01,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:07:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:07:01,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542621530] [2019-11-28 17:07:01,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907823067] [2019-11-28 17:07:01,481 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:07:01,522 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:07:01,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:07:01,523 WARN L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 17:07:01,524 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:07:01,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:07:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:07:01,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:07:01,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-28 17:07:01,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595888479] [2019-11-28 17:07:01,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 17:07:01,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:07:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 17:07:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:07:01,606 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-11-28 17:07:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:07:01,799 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-28 17:07:01,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 17:07:01,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-28 17:07:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:07:01,801 INFO L225 Difference]: With dead ends: 17 [2019-11-28 17:07:01,801 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:07:01,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-11-28 17:07:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:07:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 17:07:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:07:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 17:07:01,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-28 17:07:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:07:01,806 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 17:07:01,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 17:07:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 17:07:01,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:07:01,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:07:01,807 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2019-11-28 17:07:02,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:07:02,012 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:07:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:07:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1290413136, now seen corresponding path program 3 times [2019-11-28 17:07:02,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:07:02,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240492985] [2019-11-28 17:07:02,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:07:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:07:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:07:02,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240492985] [2019-11-28 17:07:02,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803048181] [2019-11-28 17:07:02,184 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 17:07:02,213 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 17:07:02,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:07:02,215 WARN L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 31 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:07:02,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:07:02,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:07:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:07:02,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:07:02,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2019-11-28 17:07:02,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503273878] [2019-11-28 17:07:02,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 17:07:02,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:07:02,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 17:07:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:07:02,349 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 13 states. [2019-11-28 17:07:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:07:02,562 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-11-28 17:07:02,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 17:07:02,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2019-11-28 17:07:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:07:02,564 INFO L225 Difference]: With dead ends: 14 [2019-11-28 17:07:02,564 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:07:02,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:07:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:07:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:07:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:07:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:07:02,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-28 17:07:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:07:02,566 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:07:02,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 17:07:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:07:02,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:07:02,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:07:02,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:07:02,857 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:07:02,857 INFO L249 CegarLoopResult]: At program point L21(lines 21 23) the Hoare annotation is: true [2019-11-28 17:07:02,858 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-11-28 17:07:02,858 INFO L246 CegarLoopResult]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2019-11-28 17:07:02,858 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:07:02,858 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:07:02,858 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:07:02,858 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:07:02,859 INFO L249 CegarLoopResult]: At program point L24(lines 10 25) the Hoare annotation is: true [2019-11-28 17:07:02,859 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 17:07:02,859 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:07:02,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:07:02 BoogieIcfgContainer [2019-11-28 17:07:02,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:07:02,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:07:02,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:07:02,879 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:07:02,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:59" (3/4) ... [2019-11-28 17:07:02,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:07:02,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:07:02,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:07:02,941 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:07:02,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:07:02,944 INFO L168 Benchmark]: Toolchain (without parser) took 3684.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 959.0 MB in the beginning and 921.6 MB in the end (delta: 37.5 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:07:02,945 INFO L168 Benchmark]: CDTParser took 0.78 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 17:07:02,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.08 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 17:07:02,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:07:02,947 INFO L168 Benchmark]: Boogie Preprocessor took 21.54 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 17:07:02,948 INFO L168 Benchmark]: RCFGBuilder took 283.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:07:02,948 INFO L168 Benchmark]: TraceAbstraction took 2900.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.6 MB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:07:02,949 INFO L168 Benchmark]: Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 921.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:07:02,953 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 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 308.08 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 102.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.54 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 283.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2900.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.6 MB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. * Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 921.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 17]: Loop Invariant Derived loop invariant: x + j <= y + i && y + i <= x + j - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 21 SDslu, 33 SDs, 0 SdLazy, 158 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3698 SizeOfPredicates, 18 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 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...