./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_1-1.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/loop-acceleration/underapprox_1-1.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 39d1cf9c8579a9e3ab0612befbfddbea31e87fbe ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:05:22,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:05:22,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:05:22,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:05:22,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:05:22,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:05:22,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:05:22,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:05:22,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:05:22,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:05:22,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:05:22,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:05:22,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:05:22,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:05:22,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:05:22,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:05:22,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:05:22,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:05:22,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:05:22,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:05:22,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:05:22,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:05:22,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:05:22,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:05:22,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:05:22,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:05:22,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:05:22,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:05:22,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:05:22,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:05:22,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:05:22,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:05:22,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:05:22,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:05:22,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:05:22,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:05:22,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:05:22,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:05:22,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:05:22,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:05:22,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:05:22,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:05:22,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:05:22,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:05:22,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:05:22,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:05:22,408 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:05:22,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:05:22,408 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:05:22,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:05:22,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:05:22,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:05:22,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:05:22,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:05:22,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:05:22,411 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:05:22,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:05:22,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:05:22,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:05:22,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:05:22,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:05:22,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:05:22,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:05:22,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:05:22,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:05:22,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:05:22,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:05:22,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:05:22,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:05:22,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:05:22,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:05:22,415 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 -> 39d1cf9c8579a9e3ab0612befbfddbea31e87fbe [2019-11-28 17:05:22,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:05:22,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:05:22,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:05:22,753 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:05:22,754 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:05:22,755 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2019-11-28 17:05:22,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006809cad/fe52ed694cf34d46a5ef01038177f205/FLAGb03e11ccd [2019-11-28 17:05:23,258 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:05:23,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2019-11-28 17:05:23,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006809cad/fe52ed694cf34d46a5ef01038177f205/FLAGb03e11ccd [2019-11-28 17:05:23,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006809cad/fe52ed694cf34d46a5ef01038177f205 [2019-11-28 17:05:23,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:05:23,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:05:23,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:05:23,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:05:23,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:05:23,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:23,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4696e6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23, skipping insertion in model container [2019-11-28 17:05:23,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:23,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:05:23,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:05:23,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:05:23,963 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:05:23,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:05:23,997 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:05:23,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23 WrapperNode [2019-11-28 17:05:23,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:05:23,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:05:23,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:05:24,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:05:24,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:05:24,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:05:24,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:05:24,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:05:24,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (1/1) ... [2019-11-28 17:05:24,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:05:24,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:05:24,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:05:24,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:05:24,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (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 17:05:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:05:24,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:05:24,308 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:05:24,309 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:05:24,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:05:24 BoogieIcfgContainer [2019-11-28 17:05:24,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:05:24,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:05:24,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:05:24,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:05:24,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:05:23" (1/3) ... [2019-11-28 17:05:24,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649b00b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:05:24, skipping insertion in model container [2019-11-28 17:05:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:23" (2/3) ... [2019-11-28 17:05:24,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649b00b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:05:24, skipping insertion in model container [2019-11-28 17:05:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:05:24" (3/3) ... [2019-11-28 17:05:24,318 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c [2019-11-28 17:05:24,327 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:05:24,333 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:05:24,345 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:05:24,369 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:05:24,369 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:05:24,369 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:05:24,369 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:05:24,369 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:05:24,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:05:24,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:05:24,372 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:05:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-28 17:05:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:05:24,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:24,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:05:24,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-28 17:05:24,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:24,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378045039] [2019-11-28 17:05:24,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:24,606 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 17:05:24,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378045039] [2019-11-28 17:05:24,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:05:24,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:05:24,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267028613] [2019-11-28 17:05:24,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:05:24,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:05:24,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:05:24,647 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-28 17:05:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:24,675 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-28 17:05:24,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:05:24,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 17:05:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:24,702 INFO L225 Difference]: With dead ends: 17 [2019-11-28 17:05:24,702 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:05:24,706 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:05:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:05:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:05:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:05:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 17:05:24,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-28 17:05:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:24,731 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 17:05:24,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:05:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 17:05:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:05:24,732 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:24,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:05:24,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-28 17:05:24,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:24,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542146796] [2019-11-28 17:05:24,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:24,827 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 17:05:24,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542146796] [2019-11-28 17:05:24,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247424578] [2019-11-28 17:05:24,828 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 17:05:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:24,862 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 17:05:24,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:05:24,908 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 17:05:24,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:05:24,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-28 17:05:24,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442440813] [2019-11-28 17:05:24,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:05:24,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:05:24,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:05:24,911 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-28 17:05:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:24,935 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 17:05:24,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:05:24,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-28 17:05:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:24,937 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:05:24,937 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:05:24,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:05:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:05:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:05:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:05:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 17:05:24,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 17:05:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:24,943 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 17:05:24,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:05:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 17:05:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:05:24,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:24,945 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-28 17:05:25,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:25,148 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:25,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:25,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-28 17:05:25,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:25,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60566440] [2019-11-28 17:05:25,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:25,238 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 17:05:25,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60566440] [2019-11-28 17:05:25,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552192165] [2019-11-28 17:05:25,239 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 17:05:25,278 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:05:25,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:05:25,279 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 17:05:25,279 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:05:25,308 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 17:05:25,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:05:25,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 17:05:25,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708119581] [2019-11-28 17:05:25,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:05:25,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:05:25,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:05:25,311 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-28 17:05:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:25,352 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 17:05:25,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:05:25,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-28 17:05:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:25,353 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:05:25,354 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:05:25,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:05:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:05:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:05:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:05:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:05:25,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:05:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:25,358 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:05:25,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:05:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:05:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:05:25,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:25,358 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2019-11-28 17:05:25,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:25,559 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 516237138, now seen corresponding path program 3 times [2019-11-28 17:05:25,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:25,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988050012] [2019-11-28 17:05:25,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:05:25,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988050012] [2019-11-28 17:05:25,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565451740] [2019-11-28 17:05:25,669 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:25,706 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 17:05:25,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:05:25,707 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 17:05:25,708 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:05:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:05:25,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:05:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 17:05:25,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790992890] [2019-11-28 17:05:25,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:05:25,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:25,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:05:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:05:25,735 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2019-11-28 17:05:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:25,774 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-28 17:05:25,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:05:25,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-28 17:05:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:25,776 INFO L225 Difference]: With dead ends: 14 [2019-11-28 17:05:25,777 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 17:05:25,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:05:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 17:05:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 17:05:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 17:05:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-28 17:05:25,784 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-11-28 17:05:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:25,784 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-28 17:05:25,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:05:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-28 17:05:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:05:25,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:25,786 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2019-11-28 17:05:25,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:25,987 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:25,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1174852536, now seen corresponding path program 4 times [2019-11-28 17:05:25,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:25,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997597829] [2019-11-28 17:05:25,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:26,148 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 17:05:26,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997597829] [2019-11-28 17:05:26,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774739705] [2019-11-28 17:05:26,149 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:26,180 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 17:05:26,180 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:05:26,181 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 17:05:26,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:05:26,213 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 17:05:26,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:05:26,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-28 17:05:26,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096551400] [2019-11-28 17:05:26,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:05:26,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:26,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:05:26,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:05:26,216 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2019-11-28 17:05:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:26,256 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-28 17:05:26,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:05:26,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-28 17:05:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:26,257 INFO L225 Difference]: With dead ends: 15 [2019-11-28 17:05:26,257 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:05:26,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:05:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:05:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 17:05:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:05:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 17:05:26,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-11-28 17:05:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:26,262 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 17:05:26,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:05:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 17:05:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:05:26,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:26,263 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2019-11-28 17:05:26,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:26,471 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2059024878, now seen corresponding path program 5 times [2019-11-28 17:05:26,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:26,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870540628] [2019-11-28 17:05:26,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:05:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:05:26,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870540628] [2019-11-28 17:05:26,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98434203] [2019-11-28 17:05:26,614 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:26,653 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-28 17:05:26,654 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:05:26,655 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 17:05:26,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:05:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:05:26,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:05:26,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-28 17:05:26,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988559452] [2019-11-28 17:05:26,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 17:05:26,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:05:26,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 17:05:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:05:26,685 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2019-11-28 17:05:26,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:05:26,741 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-28 17:05:26,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 17:05:26,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-11-28 17:05:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:05:26,742 INFO L225 Difference]: With dead ends: 16 [2019-11-28 17:05:26,742 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 17:05:26,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:05:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 17:05:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 17:05:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 17:05:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 17:05:26,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-11-28 17:05:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:05:26,747 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 17:05:26,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 17:05:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 17:05:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:05:26,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:05:26,749 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2019-11-28 17:05:26,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:05:26,954 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:05:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:05:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash 596403592, now seen corresponding path program 6 times [2019-11-28 17:05:26,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:05:26,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527828500] [2019-11-28 17:05:26,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:05:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:05:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:05:27,034 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:05:27,035 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:05:27,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:05:27 BoogieIcfgContainer [2019-11-28 17:05:27,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:05:27,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:05:27,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:05:27,058 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:05:27,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:05:24" (3/4) ... [2019-11-28 17:05:27,061 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:05:27,146 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:05:27,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:05:27,149 INFO L168 Benchmark]: Toolchain (without parser) took 3432.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 984.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 118.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:05:27,150 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:05:27,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.31 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:05:27,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:05:27,152 INFO L168 Benchmark]: Boogie Preprocessor took 18.57 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 17:05:27,153 INFO L168 Benchmark]: RCFGBuilder took 206.62 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:05:27,154 INFO L168 Benchmark]: TraceAbstraction took 2746.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.6 MB in the end (delta: 139.7 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:05:27,154 INFO L168 Benchmark]: Witness Printer took 89.29 ms. Allocated memory is still 1.2 GB. Free memory is still 984.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:05:27,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 282.31 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.57 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 206.62 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2746.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.6 MB in the end (delta: 139.7 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. * Witness Printer took 89.29 ms. Allocated memory is still 1.2 GB. Free memory is still 984.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] unsigned int x = 0; [L12] unsigned int y = 1; [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND FALSE !(x < 6) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 69 SDs, 0 SdLazy, 135 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2490 SizeOfPredicates, 5 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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 incorrect! Received shutdown request...