./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/gcd01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0497b69437c9ebb889888bdb31aaefcc8eaad029 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:28:22,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:28:22,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:28:22,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:28:22,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:28:22,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:28:22,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:28:22,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:28:22,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:28:22,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:28:22,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:28:22,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:28:22,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:28:22,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:28:22,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:28:22,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:28:22,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:28:22,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:28:22,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:28:22,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:28:22,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:28:22,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:28:22,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:28:22,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:28:22,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:28:22,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:28:22,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:28:22,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:28:22,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:28:22,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:28:22,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:28:22,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:28:22,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:28:22,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:28:22,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:28:22,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:28:22,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:28:22,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:28:22,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:28:22,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:28:22,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:28:22,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:28:22,293 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:28:22,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:28:22,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:28:22,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:28:22,295 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:28:22,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:28:22,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:28:22,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:28:22,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:28:22,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:28:22,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:28:22,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:28:22,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:28:22,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:28:22,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:28:22,297 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:28:22,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:28:22,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:28:22,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:28:22,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:28:22,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:28:22,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:28:22,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:28:22,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:28:22,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:28:22,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:28:22,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:28:22,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:28:22,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:28:22,301 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 -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2019-11-28 17:28:22,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:28:22,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:28:22,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:28:22,664 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:28:22,665 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:28:22,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd01-1.c [2019-11-28 17:28:22,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5874a2aa5/34efd21af4cd4b25b5c8afac1ac9d7a9/FLAGbeb038e69 [2019-11-28 17:28:23,189 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:28:23,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd01-1.c [2019-11-28 17:28:23,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5874a2aa5/34efd21af4cd4b25b5c8afac1ac9d7a9/FLAGbeb038e69 [2019-11-28 17:28:23,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5874a2aa5/34efd21af4cd4b25b5c8afac1ac9d7a9 [2019-11-28 17:28:23,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:28:23,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:28:23,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:28:23,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:28:23,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:28:23,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6373eea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23, skipping insertion in model container [2019-11-28 17:28:23,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:28:23,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:28:23,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:28:23,766 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:28:23,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:28:23,800 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:28:23,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23 WrapperNode [2019-11-28 17:28:23,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:28:23,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:28:23,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:28:23,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:28:23,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:28:23,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:28:23,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:28:23,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:28:23,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (1/1) ... [2019-11-28 17:28:23,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:28:23,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:28:23,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:28:23,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:28:23,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (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 17:28:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-11-28 17:28:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-11-28 17:28:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:28:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:28:24,234 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:28:24,234 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 17:28:24,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:24 BoogieIcfgContainer [2019-11-28 17:28:24,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:28:24,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:28:24,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:28:24,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:28:24,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:28:23" (1/3) ... [2019-11-28 17:28:24,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fbbcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:24, skipping insertion in model container [2019-11-28 17:28:24,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:23" (2/3) ... [2019-11-28 17:28:24,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fbbcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:24, skipping insertion in model container [2019-11-28 17:28:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:24" (3/3) ... [2019-11-28 17:28:24,260 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2019-11-28 17:28:24,287 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:28:24,308 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:28:24,325 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:28:24,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:28:24,371 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:28:24,371 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:28:24,372 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:28:24,373 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:28:24,373 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:28:24,373 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:28:24,374 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:28:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-28 17:28:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:28:24,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:24,399 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:24,399 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:24,405 INFO L82 PathProgramCache]: Analyzing trace with hash -540428153, now seen corresponding path program 1 times [2019-11-28 17:28:24,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:24,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504130846] [2019-11-28 17:28:24,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,684 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 17:28:24,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504130846] [2019-11-28 17:28:24,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:24,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 17:28:24,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159282293] [2019-11-28 17:28:24,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:28:24,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:28:24,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:28:24,710 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2019-11-28 17:28:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:24,836 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-11-28 17:28:24,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:28:24,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 17:28:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:24,849 INFO L225 Difference]: With dead ends: 36 [2019-11-28 17:28:24,850 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 17:28:24,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 17:28:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 17:28:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 17:28:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-28 17:28:24,906 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-11-28 17:28:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:24,907 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-28 17:28:24,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:28:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-28 17:28:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 17:28:24,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:24,910 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:24,910 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:24,910 INFO L82 PathProgramCache]: Analyzing trace with hash 999682999, now seen corresponding path program 1 times [2019-11-28 17:28:24,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:24,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051873320] [2019-11-28 17:28:24,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,065 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 17:28:25,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051873320] [2019-11-28 17:28:25,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:25,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 17:28:25,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756743277] [2019-11-28 17:28:25,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:28:25,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:25,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:28:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:28:25,076 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2019-11-28 17:28:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:25,155 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-28 17:28:25,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:28:25,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 17:28:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:25,158 INFO L225 Difference]: With dead ends: 26 [2019-11-28 17:28:25,159 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 17:28:25,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 17:28:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-28 17:28:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 17:28:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-28 17:28:25,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2019-11-28 17:28:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:25,174 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-28 17:28:25,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:28:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-28 17:28:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 17:28:25,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:25,177 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:25,178 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:25,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1243478463, now seen corresponding path program 1 times [2019-11-28 17:28:25,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:25,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249500749] [2019-11-28 17:28:25,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,338 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 17:28:25,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249500749] [2019-11-28 17:28:25,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:25,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 17:28:25,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697836197] [2019-11-28 17:28:25,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:28:25,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:28:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:25,341 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2019-11-28 17:28:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:25,511 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2019-11-28 17:28:25,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:25,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-28 17:28:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:25,516 INFO L225 Difference]: With dead ends: 32 [2019-11-28 17:28:25,517 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 17:28:25,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-28 17:28:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 17:28:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-28 17:28:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 17:28:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-28 17:28:25,536 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2019-11-28 17:28:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:25,536 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 17:28:25,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:28:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-28 17:28:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 17:28:25,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:25,540 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:25,541 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:25,541 INFO L82 PathProgramCache]: Analyzing trace with hash -102281283, now seen corresponding path program 1 times [2019-11-28 17:28:25,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:25,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246906088] [2019-11-28 17:28:25,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,730 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 17:28:25,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246906088] [2019-11-28 17:28:25,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:25,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 17:28:25,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927821379] [2019-11-28 17:28:25,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:28:25,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:28:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:25,734 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2019-11-28 17:28:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:25,879 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-28 17:28:25,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:25,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-28 17:28:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:25,884 INFO L225 Difference]: With dead ends: 32 [2019-11-28 17:28:25,884 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 17:28:25,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:28:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 17:28:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-28 17:28:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 17:28:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 17:28:25,897 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 19 [2019-11-28 17:28:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:25,897 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 17:28:25,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:28:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 17:28:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 17:28:25,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:25,900 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:25,900 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:25,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1914749337, now seen corresponding path program 1 times [2019-11-28 17:28:25,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:25,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12913341] [2019-11-28 17:28:25,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 17:28:26,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12913341] [2019-11-28 17:28:26,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:26,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 17:28:26,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552373691] [2019-11-28 17:28:26,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:28:26,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:28:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:26,036 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2019-11-28 17:28:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:26,095 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-28 17:28:26,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:26,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-28 17:28:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:26,098 INFO L225 Difference]: With dead ends: 27 [2019-11-28 17:28:26,098 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 17:28:26,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:28:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 17:28:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-28 17:28:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 17:28:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-28 17:28:26,106 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 20 [2019-11-28 17:28:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:26,106 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-28 17:28:26,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:28:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-28 17:28:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 17:28:26,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:26,108 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:26,108 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash -675898105, now seen corresponding path program 1 times [2019-11-28 17:28:26,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:26,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382947688] [2019-11-28 17:28:26,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 17:28:26,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382947688] [2019-11-28 17:28:26,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:26,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 17:28:26,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668422450] [2019-11-28 17:28:26,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:28:26,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:26,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:28:26,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:28:26,215 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2019-11-28 17:28:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:26,284 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-28 17:28:26,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:26,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-28 17:28:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:26,286 INFO L225 Difference]: With dead ends: 30 [2019-11-28 17:28:26,287 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 17:28:26,287 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:28:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 17:28:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 17:28:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 17:28:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-28 17:28:26,304 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2019-11-28 17:28:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:26,305 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-28 17:28:26,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:28:26,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-28 17:28:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 17:28:26,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:26,307 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:26,307 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash -482715817, now seen corresponding path program 1 times [2019-11-28 17:28:26,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:26,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958562957] [2019-11-28 17:28:26,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-28 17:28:26,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958562957] [2019-11-28 17:28:26,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:26,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 17:28:26,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488016836] [2019-11-28 17:28:26,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:28:26,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:28:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:28:26,471 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2019-11-28 17:28:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:26,552 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-28 17:28:26,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 17:28:26,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-28 17:28:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:26,553 INFO L225 Difference]: With dead ends: 26 [2019-11-28 17:28:26,553 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:28:26,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:28:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:28:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:28:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:28:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:28:26,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-28 17:28:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:26,556 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:28:26,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:28:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:28:26,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:28:26,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:28:26,629 INFO L246 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2019-11-28 17:28:26,629 INFO L246 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2019-11-28 17:28:26,629 INFO L242 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= 1 gcd_~y1) (<= (+ gcd_~y1 1) gcd_~y2)) [2019-11-28 17:28:26,630 INFO L246 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-28 17:28:26,630 INFO L249 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2019-11-28 17:28:26,630 INFO L242 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y2 1) gcd_~y1)) [2019-11-28 17:28:26,630 INFO L246 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2019-11-28 17:28:26,630 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-28 17:28:26,630 INFO L246 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2019-11-28 17:28:26,631 INFO L246 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-28 17:28:26,631 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:28:26,631 INFO L246 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2019-11-28 17:28:26,631 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:28:26,631 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:28:26,632 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-28 17:28:26,632 INFO L249 CegarLoopResult]: At program point L41(lines 28 43) the Hoare annotation is: true [2019-11-28 17:28:26,632 INFO L246 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-28 17:28:26,632 INFO L246 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2019-11-28 17:28:26,632 INFO L242 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~m~0) (<= 1 ULTIMATE.start_main_~n~0)) [2019-11-28 17:28:26,632 INFO L246 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-28 17:28:26,633 INFO L246 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-11-28 17:28:26,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:28:26 BoogieIcfgContainer [2019-11-28 17:28:26,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:28:26,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:28:26,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:28:26,645 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:28:26,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:24" (3/4) ... [2019-11-28 17:28:26,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:28:26,659 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-11-28 17:28:26,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 17:28:26,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:28:26,734 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:28:26,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:28:26,739 INFO L168 Benchmark]: Toolchain (without parser) took 3187.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 961.7 MB in the beginning and 942.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 153.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:26,740 INFO L168 Benchmark]: CDTParser took 0.23 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 17:28:26,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.18 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:26,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:26,743 INFO L168 Benchmark]: Boogie Preprocessor took 20.82 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 17:28:26,744 INFO L168 Benchmark]: RCFGBuilder took 316.65 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:26,748 INFO L168 Benchmark]: TraceAbstraction took 2406.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.3 MB in the end (delta: 167.6 MB). Peak memory consumption was 167.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:26,749 INFO L168 Benchmark]: Witness Printer took 89.65 ms. Allocated memory is still 1.2 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:28:26,759 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.18 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 96.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.82 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. * RCFGBuilder took 316.65 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2406.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.3 MB in the end (delta: 167.6 MB). Peak memory consumption was 167.6 MB. Max. memory is 11.5 GB. * Witness Printer took 89.65 ms. Allocated memory is still 1.2 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 96 SDslu, 351 SDs, 0 SdLazy, 300 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=6, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 5212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 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...