/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:25:12,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:25:12,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:25:12,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:25:12,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:25:12,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:25:12,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:25:12,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:25:12,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:25:12,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:25:12,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:25:12,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:25:12,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:25:12,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:25:12,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:25:12,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:25:12,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:25:12,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:25:12,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:25:12,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:25:12,705 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 [2019-11-06 21:25:12,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:25:12,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:25:12,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:25:12,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:25:12,729 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:25:12,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:25:12,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:25:12,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:25:12,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:25:12,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:25:12,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:25:12,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:25:12,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:25:12,732 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:25:12,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:25:12,732 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:25:12,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:25:12,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:25:12,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:25:12,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:25:12,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:25:12,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:25:12,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:25:12,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:25:12,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:25:12,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:25:12,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:25:12,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:25:12,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:25:13,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:25:13,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:25:13,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:25:13,027 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:25:13,027 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:25:13,028 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2019-11-06 21:25:13,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ef36e11/43cf50d4d28f41af89caa8702fd004f1/FLAG7076b9996 [2019-11-06 21:25:13,526 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:25:13,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2019-11-06 21:25:13,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ef36e11/43cf50d4d28f41af89caa8702fd004f1/FLAG7076b9996 [2019-11-06 21:25:13,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ef36e11/43cf50d4d28f41af89caa8702fd004f1 [2019-11-06 21:25:13,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:25:13,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:25:13,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:13,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:25:13,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:25:13,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:13" (1/1) ... [2019-11-06 21:25:13,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fa035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:13, skipping insertion in model container [2019-11-06 21:25:13,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:13" (1/1) ... [2019-11-06 21:25:13,968 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:25:13,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:25:14,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:14,211 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:25:14,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:14,240 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:25:14,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14 WrapperNode [2019-11-06 21:25:14,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:14,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:25:14,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:25:14,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:25:14,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (1/1) ... [2019-11-06 21:25:14,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:25:14,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:25:14,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:25:14,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:25:14,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (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 [2019-11-06 21:25:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:25:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:25:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:25:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:25:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:25:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:25:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:25:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:25:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:25:14,569 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:25:14,570 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:25:14,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:14 BoogieIcfgContainer [2019-11-06 21:25:14,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:25:14,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:25:14,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:25:14,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:25:14,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:25:13" (1/3) ... [2019-11-06 21:25:14,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c9c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:14, skipping insertion in model container [2019-11-06 21:25:14,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:14" (2/3) ... [2019-11-06 21:25:14,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c9c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:14, skipping insertion in model container [2019-11-06 21:25:14,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:14" (3/3) ... [2019-11-06 21:25:14,579 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-11-06 21:25:14,589 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:25:14,597 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:25:14,608 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:25:14,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:25:14,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:25:14,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:25:14,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:25:14,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:25:14,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:25:14,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:25:14,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:25:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-06 21:25:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:25:14,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:14,652 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:14,654 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2019-11-06 21:25:14,665 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:14,666 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778535832] [2019-11-06 21:25:14,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:14,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778535832] [2019-11-06 21:25:14,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:14,758 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:25:14,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530918545] [2019-11-06 21:25:14,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:25:14,764 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:25:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:25:14,781 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-06 21:25:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:14,803 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-06 21:25:14,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:25:14,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 21:25:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:14,813 INFO L225 Difference]: With dead ends: 30 [2019-11-06 21:25:14,813 INFO L226 Difference]: Without dead ends: 13 [2019-11-06 21:25:14,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:25:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-06 21:25:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-06 21:25:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-06 21:25:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-06 21:25:14,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-11-06 21:25:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:14,852 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-06 21:25:14,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:25:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-06 21:25:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:25:14,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:14,854 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:14,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2019-11-06 21:25:14,855 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:14,855 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943553207] [2019-11-06 21:25:14,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:14,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943553207] [2019-11-06 21:25:14,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:14,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:25:14,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684734811] [2019-11-06 21:25:14,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:25:14,913 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:14,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:25:14,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:25:14,914 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-11-06 21:25:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:14,964 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-06 21:25:14,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:25:14,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-06 21:25:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:14,966 INFO L225 Difference]: With dead ends: 24 [2019-11-06 21:25:14,966 INFO L226 Difference]: Without dead ends: 16 [2019-11-06 21:25:14,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:25:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-06 21:25:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-06 21:25:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-06 21:25:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-06 21:25:14,972 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-06 21:25:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:14,973 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-06 21:25:14,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:25:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-06 21:25:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:25:14,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:14,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:14,974 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2019-11-06 21:25:14,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:14,975 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075482786] [2019-11-06 21:25:14,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,056 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075482786] [2019-11-06 21:25:15,057 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554591648] [2019-11-06 21:25:15,057 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 [2019-11-06 21:25:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:25:15,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:25:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,163 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:25:15,164 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-11-06 21:25:15,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926234453] [2019-11-06 21:25:15,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:25:15,165 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:25:15,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:25:15,166 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-11-06 21:25:15,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:15,210 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-11-06 21:25:15,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:25:15,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-06 21:25:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:15,214 INFO L225 Difference]: With dead ends: 24 [2019-11-06 21:25:15,214 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:25:15,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:25:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:25:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-11-06 21:25:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-06 21:25:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-06 21:25:15,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-11-06 21:25:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:15,221 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-06 21:25:15,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:25:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-06 21:25:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 21:25:15,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:15,222 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:15,432 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:25:15,435 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:15,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 57842105, now seen corresponding path program 1 times [2019-11-06 21:25:15,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:15,436 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235114742] [2019-11-06 21:25:15,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,476 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235114742] [2019-11-06 21:25:15,477 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112573971] [2019-11-06 21:25:15,477 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 [2019-11-06 21:25:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:25:15,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:25:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,516 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:25:15,517 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-06 21:25:15,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993095034] [2019-11-06 21:25:15,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:25:15,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:15,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:25:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:25:15,519 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-11-06 21:25:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:15,568 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-11-06 21:25:15,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:25:15,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-06 21:25:15,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:15,570 INFO L225 Difference]: With dead ends: 31 [2019-11-06 21:25:15,571 INFO L226 Difference]: Without dead ends: 21 [2019-11-06 21:25:15,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:25:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-06 21:25:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-06 21:25:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 21:25:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-06 21:25:15,581 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2019-11-06 21:25:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:15,582 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-06 21:25:15,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:25:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-06 21:25:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 21:25:15,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:15,585 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:15,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:25:15,790 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 2 times [2019-11-06 21:25:15,791 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:15,791 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330143694] [2019-11-06 21:25:15,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330143694] [2019-11-06 21:25:15,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336699387] [2019-11-06 21:25:15,865 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 [2019-11-06 21:25:15,902 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:25:15,903 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:25:15,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:25:15,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:25:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:15,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:25:15,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-11-06 21:25:15,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826294645] [2019-11-06 21:25:15,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:25:15,922 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:25:15,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:25:15,923 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2019-11-06 21:25:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:15,991 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-11-06 21:25:15,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:25:15,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-06 21:25:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:15,993 INFO L225 Difference]: With dead ends: 35 [2019-11-06 21:25:15,993 INFO L226 Difference]: Without dead ends: 25 [2019-11-06 21:25:15,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:25:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-06 21:25:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-11-06 21:25:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 21:25:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-11-06 21:25:16,000 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2019-11-06 21:25:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:16,000 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-11-06 21:25:16,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:25:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-11-06 21:25:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 21:25:16,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:16,002 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:16,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:25:16,207 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash -452912071, now seen corresponding path program 3 times [2019-11-06 21:25:16,208 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:16,209 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345224145] [2019-11-06 21:25:16,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:16,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345224145] [2019-11-06 21:25:16,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631441179] [2019-11-06 21:25:16,280 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 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 [2019-11-06 21:25:16,308 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-06 21:25:16,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:25:16,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:25:16,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:25:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 21:25:16,337 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:25:16,337 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-11-06 21:25:16,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716556402] [2019-11-06 21:25:16,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:25:16,338 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:25:16,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:25:16,339 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2019-11-06 21:25:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:16,411 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-06 21:25:16,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:25:16,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-11-06 21:25:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:16,414 INFO L225 Difference]: With dead ends: 33 [2019-11-06 21:25:16,414 INFO L226 Difference]: Without dead ends: 28 [2019-11-06 21:25:16,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:25:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-06 21:25:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-06 21:25:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 21:25:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-06 21:25:16,421 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2019-11-06 21:25:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:16,421 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-06 21:25:16,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:25:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-06 21:25:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 21:25:16,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:16,423 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:16,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:25:16,631 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:16,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2146400685, now seen corresponding path program 4 times [2019-11-06 21:25:16,632 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:16,632 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634007344] [2019-11-06 21:25:16,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:16,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634007344] [2019-11-06 21:25:16,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995605105] [2019-11-06 21:25:16,700 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 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 [2019-11-06 21:25:16,740 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-06 21:25:16,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:25:16,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:25:16,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:25:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:16,777 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:25:16,777 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2019-11-06 21:25:16,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723497820] [2019-11-06 21:25:16,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:25:16,778 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:25:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:25:16,778 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2019-11-06 21:25:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:16,847 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-06 21:25:16,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:25:16,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2019-11-06 21:25:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:16,849 INFO L225 Difference]: With dead ends: 40 [2019-11-06 21:25:16,849 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 21:25:16,849 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:25:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 21:25:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-06 21:25:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-06 21:25:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-11-06 21:25:16,856 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 25 [2019-11-06 21:25:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:16,856 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-11-06 21:25:16,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:25:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-11-06 21:25:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 21:25:16,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:16,857 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:17,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:25:17,066 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash 749989817, now seen corresponding path program 5 times [2019-11-06 21:25:17,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:17,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147401886] [2019-11-06 21:25:17,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:17,122 INFO L172 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-06 21:25:17,123 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-06 21:25:17,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:25:17 BoogieIcfgContainer [2019-11-06 21:25:17,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:25:17,150 INFO L168 Benchmark]: Toolchain (without parser) took 3197.89 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 103.1 MB in the beginning and 165.7 MB in the end (delta: -62.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:17,150 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 21:25:17,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.61 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:17,152 INFO L168 Benchmark]: Boogie Preprocessor took 100.77 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:17,153 INFO L168 Benchmark]: RCFGBuilder took 229.05 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 171.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:17,154 INFO L168 Benchmark]: TraceAbstraction took 2575.01 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 170.1 MB in the beginning and 165.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:17,158 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.61 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.77 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.05 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 171.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2575.01 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 170.1 MB in the beginning and 165.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 35.3 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, sn=0; [L13] i=1 VAL [i=1, sn=0] [L13] COND TRUE i<=8 VAL [i=1, sn=0] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=1, sn=2] [L13] i++ VAL [i=2, sn=2] [L13] COND TRUE i<=8 VAL [i=2, sn=2] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=2, sn=4] [L13] i++ VAL [i=3, sn=4] [L13] COND TRUE i<=8 VAL [i=3, sn=4] [L14] COND TRUE i<4 [L15] sn = sn + (2) VAL [i=3, sn=6] [L13] i++ VAL [i=4, sn=6] [L13] COND TRUE i<=8 VAL [i=4, sn=6] [L14] COND FALSE !(i<4) VAL [i=4, sn=6] [L13] i++ VAL [i=5, sn=6] [L13] COND TRUE i<=8 VAL [i=5, sn=6] [L14] COND FALSE !(i<4) VAL [i=5, sn=6] [L13] i++ VAL [i=6, sn=6] [L13] COND TRUE i<=8 VAL [i=6, sn=6] [L14] COND FALSE !(i<4) VAL [i=6, sn=6] [L13] i++ VAL [i=7, sn=6] [L13] COND TRUE i<=8 VAL [i=7, sn=6] [L14] COND FALSE !(i<4) VAL [i=7, sn=6] [L13] i++ VAL [i=8, sn=6] [L13] COND TRUE i<=8 VAL [i=8, sn=6] [L14] COND FALSE !(i<4) VAL [i=8, sn=6] [L13] i++ VAL [i=9, sn=6] [L13] COND FALSE !(i<=8) VAL [i=9, sn=6] [L17] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 120 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 244 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 6888 SizeOfPredicates, 4 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 41/150 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...