/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:15:22,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:15:22,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:15:22,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:15:22,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:15:22,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:15:22,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:15:22,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:15:22,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:15:22,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:15:22,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:15:22,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:15:22,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:15:22,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:15:22,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:15:22,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:15:22,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:15:22,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:15:22,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:15:22,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:15:22,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:15:22,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:15:22,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:15:22,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:15:22,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:15:22,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:15:22,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:15:22,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:15:22,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:15:22,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:15:22,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:15:22,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:15:22,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:15:22,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:15:22,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:15:22,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:15:22,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:15:22,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:15:22,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:15:22,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:15:22,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:15:22,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:15:22,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:15:22,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:15:22,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:15:22,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:15:22,571 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:15:22,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:15:22,571 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:15:22,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:15:22,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:15:22,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:15:22,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:15:22,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:15:22,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:15:22,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:15:22,574 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:15:22,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:15:22,574 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:15:22,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:15:22,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:15:22,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:15:22,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:15:22,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:15:22,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:15:22,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:15:22,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:15:22,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:15:22,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:15:22,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:15:22,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:15:22,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:15:22,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:15:22,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:15:22,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:15:22,894 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:15:22,894 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:15:22,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2019-11-23 22:15:22,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca4ecb5d/b4bd62cb25174320a3339339c41107f5/FLAG4a3a47a28 [2019-11-23 22:15:23,410 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:15:23,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2019-11-23 22:15:23,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca4ecb5d/b4bd62cb25174320a3339339c41107f5/FLAG4a3a47a28 [2019-11-23 22:15:23,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca4ecb5d/b4bd62cb25174320a3339339c41107f5 [2019-11-23 22:15:23,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:15:23,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:15:23,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:23,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:15:23,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:15:23,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:23" (1/1) ... [2019-11-23 22:15:23,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a548da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:23, skipping insertion in model container [2019-11-23 22:15:23,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:23" (1/1) ... [2019-11-23 22:15:23,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:15:23,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:15:24,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:24,038 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:15:24,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:24,061 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:15:24,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24 WrapperNode [2019-11-23 22:15:24,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:24,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:24,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:15:24,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:15:24,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:24,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:15:24,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:15:24,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:15:24,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (1/1) ... [2019-11-23 22:15:24,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:15:24,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:15:24,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:15:24,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:15:24,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (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 [2019-11-23 22:15:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:15:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:15:24,413 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:15:24,413 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:15:24,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:24 BoogieIcfgContainer [2019-11-23 22:15:24,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:15:24,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:15:24,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:15:24,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:15:24,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:15:23" (1/3) ... [2019-11-23 22:15:24,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d674a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:24, skipping insertion in model container [2019-11-23 22:15:24,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:24" (2/3) ... [2019-11-23 22:15:24,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d674a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:24, skipping insertion in model container [2019-11-23 22:15:24,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:24" (3/3) ... [2019-11-23 22:15:24,421 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2019-11-23 22:15:24,429 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:15:24,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:15:24,448 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:15:24,471 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:15:24,471 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:15:24,471 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:15:24,471 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:15:24,471 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:15:24,471 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:15:24,472 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:15:24,472 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:15:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 22:15:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:15:24,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:24,489 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:15:24,489 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-23 22:15:24,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:24,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891988745] [2019-11-23 22:15:24,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:24,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891988745] [2019-11-23 22:15:24,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:24,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:15:24,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871777618] [2019-11-23 22:15:24,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:15:24,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:24,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:15:24,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:15:24,640 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-23 22:15:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:24,658 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-23 22:15:24,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:15:24,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-23 22:15:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:24,669 INFO L225 Difference]: With dead ends: 18 [2019-11-23 22:15:24,669 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:15:24,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:15:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:15:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:15:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:15:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-23 22:15:24,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-23 22:15:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:24,710 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-23 22:15:24,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:15:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-23 22:15:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:15:24,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:24,711 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:15:24,712 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-11-23 22:15:24,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:24,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659113710] [2019-11-23 22:15:24,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:24,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659113710] [2019-11-23 22:15:24,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:24,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:15:24,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313319362] [2019-11-23 22:15:24,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:24,869 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-23 22:15:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:25,012 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-23 22:15:25,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:25,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-23 22:15:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:25,013 INFO L225 Difference]: With dead ends: 13 [2019-11-23 22:15:25,013 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:15:25,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:15:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:15:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:15:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-23 22:15:25,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-11-23 22:15:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:25,019 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-23 22:15:25,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-23 22:15:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:15:25,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:25,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:25,023 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-11-23 22:15:25,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:25,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955674677] [2019-11-23 22:15:25,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:25,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955674677] [2019-11-23 22:15:25,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:25,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:15:25,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816482962] [2019-11-23 22:15:25,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:15:25,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:25,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:15:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:15:25,080 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-11-23 22:15:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:25,109 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-23 22:15:25,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:15:25,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 22:15:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:25,111 INFO L225 Difference]: With dead ends: 18 [2019-11-23 22:15:25,111 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:15:25,112 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 [2019-11-23 22:15:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:15:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-23 22:15:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:15:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-23 22:15:25,115 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2019-11-23 22:15:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:25,116 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-23 22:15:25,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:15:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-23 22:15:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:15:25,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:25,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:25,117 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -251232646, now seen corresponding path program 1 times [2019-11-23 22:15:25,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:25,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017933598] [2019-11-23 22:15:25,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:25,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017933598] [2019-11-23 22:15:25,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13911715] [2019-11-23 22:15:25,323 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 [2019-11-23 22:15:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:25,376 WARN L253 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 22:15:25,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:25,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:15:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:25,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:15:25,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-23 22:15:25,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555107938] [2019-11-23 22:15:25,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:15:25,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:25,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:15:25,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:15:25,523 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 12 states. [2019-11-23 22:15:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:25,737 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-23 22:15:25,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:15:25,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-11-23 22:15:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:25,738 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:15:25,738 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:15:25,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-11-23 22:15:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:15:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 22:15:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 22:15:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-23 22:15:25,743 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2019-11-23 22:15:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:25,744 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-23 22:15:25,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:15:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-23 22:15:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:15:25,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:25,745 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:25,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:25,946 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:25,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1099734127, now seen corresponding path program 1 times [2019-11-23 22:15:25,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:25,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979787809] [2019-11-23 22:15:25,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:26,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979787809] [2019-11-23 22:15:26,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912358521] [2019-11-23 22:15:26,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-23 22:15:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:26,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:15:26,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:26,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:15:26,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-23 22:15:26,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987697633] [2019-11-23 22:15:26,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:26,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:26,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:26,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:26,041 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-11-23 22:15:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:26,071 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-23 22:15:26,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:26,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-23 22:15:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:26,073 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:15:26,073 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:15:26,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:15:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 22:15:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 22:15:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-23 22:15:26,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-11-23 22:15:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:26,080 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-23 22:15:26,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-23 22:15:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-23 22:15:26,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:26,082 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:26,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:26,286 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2050208028, now seen corresponding path program 2 times [2019-11-23 22:15:26,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:26,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041663088] [2019-11-23 22:15:26,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:26,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041663088] [2019-11-23 22:15:26,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278202142] [2019-11-23 22:15:26,344 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 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 [2019-11-23 22:15:26,381 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:15:26,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:15:26,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:15:26,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:26,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:15:26,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-23 22:15:26,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457140263] [2019-11-23 22:15:26,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:15:26,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:26,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:15:26,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:26,389 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-11-23 22:15:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:26,417 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-11-23 22:15:26,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:15:26,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-23 22:15:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:26,418 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:15:26,418 INFO L226 Difference]: Without dead ends: 17 [2019-11-23 22:15:26,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-23 22:15:26,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-23 22:15:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:15:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-23 22:15:26,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-11-23 22:15:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:26,423 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-23 22:15:26,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:15:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-23 22:15:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-23 22:15:26,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:26,424 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2019-11-23 22:15:26,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:26,627 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:26,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2107466330, now seen corresponding path program 2 times [2019-11-23 22:15:26,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:26,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146980052] [2019-11-23 22:15:26,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-23 22:15:26,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146980052] [2019-11-23 22:15:26,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134344949] [2019-11-23 22:15:26,807 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 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 [2019-11-23 22:15:26,842 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:15:26,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:15:26,843 WARN L253 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:15:26,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:26,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:15:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:27,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:15:27,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2019-11-23 22:15:27,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36050709] [2019-11-23 22:15:27,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-23 22:15:27,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-23 22:15:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-11-23 22:15:27,012 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 17 states. [2019-11-23 22:15:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:27,453 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-23 22:15:27,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-23 22:15:27,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-11-23 22:15:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:27,454 INFO L225 Difference]: With dead ends: 27 [2019-11-23 22:15:27,454 INFO L226 Difference]: Without dead ends: 21 [2019-11-23 22:15:27,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2019-11-23 22:15:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-23 22:15:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-23 22:15:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:15:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-23 22:15:27,459 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-11-23 22:15:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:27,459 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-23 22:15:27,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-23 22:15:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-23 22:15:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:15:27,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:27,460 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:27,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:27,668 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1236497329, now seen corresponding path program 3 times [2019-11-23 22:15:27,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:27,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447155579] [2019-11-23 22:15:27,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:15:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:15:27,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-23 22:15:27,740 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-23 22:15:27,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:15:27 BoogieIcfgContainer [2019-11-23 22:15:27,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:15:27,764 INFO L168 Benchmark]: Toolchain (without parser) took 3933.84 ms. Allocated memory was 146.3 MB in the beginning and 243.3 MB in the end (delta: 97.0 MB). Free memory was 103.9 MB in the beginning and 204.4 MB in the end (delta: -100.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-23 22:15:27,765 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.93 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.21 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 182.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,768 INFO L168 Benchmark]: Boogie Preprocessor took 16.75 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 180.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,769 INFO L168 Benchmark]: RCFGBuilder took 220.13 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 170.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,770 INFO L168 Benchmark]: TraceAbstraction took 3345.96 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 169.6 MB in the beginning and 204.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:27,776 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.93 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.21 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 182.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 16.75 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 180.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 220.13 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 170.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3345.96 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 169.6 MB in the beginning and 204.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 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: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 32 SDslu, 63 SDs, 0 SdLazy, 276 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 5659 SizeOfPredicates, 12 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 22/61 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...