/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/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:05:35,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:05:35,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:05:36,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:05:36,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:05:36,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:05:36,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:05:36,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:05:36,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:05:36,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:05:36,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:05:36,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:05:36,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:05:36,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:05:36,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:05:36,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:05:36,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:05:36,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:05:36,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:05:36,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:05:36,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:05:36,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:05:36,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:05:36,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:05:36,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:05:36,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:05:36,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:05:36,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:05:36,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:05:36,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:05:36,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:05:36,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:05:36,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:05:36,085 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:05:36,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:05:36,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:05:36,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:05:36,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:05:36,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:05:36,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:05:36,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:05:36,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:05:36,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:05:36,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:05:36,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:05:36,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:05:36,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:05:36,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:05:36,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:05:36,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:05:36,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:05:36,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:05:36,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:05:36,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:05:36,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:05:36,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:05:36,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:05:36,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:05:36,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:05:36,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:05:36,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:05:36,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:05:36,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:05:36,584 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:05:36,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-04 13:05:36,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea077204/8b2edcbb57a049c3882d55b6ae182f31/FLAG9614e5c1b [2020-09-04 13:05:37,242 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:05:37,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-04 13:05:37,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea077204/8b2edcbb57a049c3882d55b6ae182f31/FLAG9614e5c1b [2020-09-04 13:05:37,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea077204/8b2edcbb57a049c3882d55b6ae182f31 [2020-09-04 13:05:37,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:05:37,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:05:37,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:05:37,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:05:37,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:05:37,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:37,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b5b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37, skipping insertion in model container [2020-09-04 13:05:37,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:37,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:05:37,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:05:37,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:05:37,874 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:05:37,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:05:37,916 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:05:37,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37 WrapperNode [2020-09-04 13:05:37,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:05:37,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:05:37,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:05:37,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:05:37,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:37,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... [2020-09-04 13:05:38,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:05:38,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:05:38,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:05:38,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:05:38,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:05:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:05:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:05:38,111 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-04 13:05:38,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:05:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:05:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:05:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-04 13:05:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:05:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:05:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:05:38,338 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:05:38,339 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:05:38,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:05:38 BoogieIcfgContainer [2020-09-04 13:05:38,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:05:38,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:05:38,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:05:38,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:05:38,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:05:37" (1/3) ... [2020-09-04 13:05:38,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:05:38, skipping insertion in model container [2020-09-04 13:05:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:37" (2/3) ... [2020-09-04 13:05:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:05:38, skipping insertion in model container [2020-09-04 13:05:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:05:38" (3/3) ... [2020-09-04 13:05:38,354 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-04 13:05:38,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:05:38,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:05:38,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:05:38,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:05:38,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:05:38,432 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:05:38,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:05:38,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:05:38,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:05:38,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:05:38,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:05:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-04 13:05:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:05:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:38,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:38,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2020-09-04 13:05:38,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:38,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773476589] [2020-09-04 13:05:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:05:38,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773476589] [2020-09-04 13:05:38,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:38,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:05:38,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501731023] [2020-09-04 13:05:38,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:05:38,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:38,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:05:38,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:05:38,956 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-09-04 13:05:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:39,123 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-09-04 13:05:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:05:39,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-04 13:05:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:39,140 INFO L225 Difference]: With dead ends: 40 [2020-09-04 13:05:39,140 INFO L226 Difference]: Without dead ends: 24 [2020-09-04 13:05:39,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:05:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-04 13:05:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-04 13:05:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-04 13:05:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-09-04 13:05:39,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-09-04 13:05:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:39,205 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-09-04 13:05:39,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:05:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-09-04 13:05:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:05:39,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:39,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:39,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:05:39,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2020-09-04 13:05:39,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:39,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122123144] [2020-09-04 13:05:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:05:39,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122123144] [2020-09-04 13:05:39,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:39,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:05:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368832050] [2020-09-04 13:05:39,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:05:39,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:05:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:05:39,328 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 7 states. [2020-09-04 13:05:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:39,434 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-09-04 13:05:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:05:39,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-04 13:05:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:39,436 INFO L225 Difference]: With dead ends: 30 [2020-09-04 13:05:39,436 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:05:39,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:05:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:05:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-04 13:05:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-04 13:05:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-09-04 13:05:39,447 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-09-04 13:05:39,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:39,447 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-09-04 13:05:39,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:05:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-09-04 13:05:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 13:05:39,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:39,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:39,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:05:39,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:39,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2020-09-04 13:05:39,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:39,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912810427] [2020-09-04 13:05:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:05:39,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912810427] [2020-09-04 13:05:39,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:39,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:05:39,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284392559] [2020-09-04 13:05:39,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:05:39,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:39,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:05:39,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:05:39,645 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 7 states. [2020-09-04 13:05:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:39,802 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-09-04 13:05:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:05:39,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 13:05:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:39,805 INFO L225 Difference]: With dead ends: 36 [2020-09-04 13:05:39,805 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 13:05:39,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:05:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 13:05:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-09-04 13:05:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:05:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-09-04 13:05:39,824 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 23 [2020-09-04 13:05:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:39,825 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-09-04 13:05:39,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:05:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-09-04 13:05:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 13:05:39,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:39,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:39,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:05:39,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:39,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2020-09-04 13:05:39,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:39,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623647525] [2020-09-04 13:05:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:05:40,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623647525] [2020-09-04 13:05:40,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:40,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:05:40,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027094598] [2020-09-04 13:05:40,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:05:40,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:40,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:05:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:05:40,007 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 8 states. [2020-09-04 13:05:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:40,166 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-04 13:05:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:05:40,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-04 13:05:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:40,168 INFO L225 Difference]: With dead ends: 36 [2020-09-04 13:05:40,168 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:05:40,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:05:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:05:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-04 13:05:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-04 13:05:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-09-04 13:05:40,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 23 [2020-09-04 13:05:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:40,177 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-09-04 13:05:40,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:05:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-09-04 13:05:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:05:40,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:40,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:40,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:05:40,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2020-09-04 13:05:40,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:40,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675079889] [2020-09-04 13:05:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:05:40,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675079889] [2020-09-04 13:05:40,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:40,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:05:40,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717162585] [2020-09-04 13:05:40,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:05:40,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:05:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:05:40,283 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2020-09-04 13:05:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:40,343 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-09-04 13:05:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:05:40,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-04 13:05:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:40,345 INFO L225 Difference]: With dead ends: 31 [2020-09-04 13:05:40,345 INFO L226 Difference]: Without dead ends: 27 [2020-09-04 13:05:40,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:05:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-04 13:05:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-09-04 13:05:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 13:05:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-09-04 13:05:40,352 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2020-09-04 13:05:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:40,353 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-09-04 13:05:40,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:05:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-09-04 13:05:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:05:40,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:40,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:40,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:05:40,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2020-09-04 13:05:40,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:40,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140179044] [2020-09-04 13:05:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 13:05:40,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140179044] [2020-09-04 13:05:40,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:40,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:05:40,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888019700] [2020-09-04 13:05:40,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:05:40,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:40,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:05:40,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:05:40,450 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 8 states. [2020-09-04 13:05:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:40,533 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-09-04 13:05:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:05:40,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-04 13:05:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:40,535 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:05:40,535 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:05:40,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:05:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:05:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 13:05:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:05:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-09-04 13:05:40,543 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2020-09-04 13:05:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:40,544 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-09-04 13:05:40,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:05:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-09-04 13:05:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 13:05:40,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:40,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:40,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:05:40,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:40,546 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2020-09-04 13:05:40,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:40,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532157239] [2020-09-04 13:05:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:05:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 13:05:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 13:05:40,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532157239] [2020-09-04 13:05:40,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:40,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:05:40,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553795536] [2020-09-04 13:05:40,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:05:40,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:40,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:05:40,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:05:40,671 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-09-04 13:05:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:40,741 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-09-04 13:05:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:05:40,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-04 13:05:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:40,743 INFO L225 Difference]: With dead ends: 30 [2020-09-04 13:05:40,743 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:05:40,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:05:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:05:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:05:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:05:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:05:40,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-09-04 13:05:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:40,746 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:05:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:05:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:05:40,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:05:40,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:05:40,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:05:40,839 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:05:40,839 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:05:40,839 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-04 13:05:40,840 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-04 13:05:40,840 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-09-04 13:05:40,840 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-04 13:05:40,840 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-04 13:05:40,841 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2020-09-04 13:05:40,841 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-04 13:05:40,841 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-04 13:05:40,841 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-04 13:05:40,841 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-04 13:05:40,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:05:40,842 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:05:40,842 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:05:40,842 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:05:40,842 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-04 13:05:40,842 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-04 13:05:40,843 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-04 13:05:40,843 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-04 13:05:40,843 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-04 13:05:40,843 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-04 13:05:40,843 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-09-04 13:05:40,844 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-04 13:05:40,844 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-04 13:05:40,844 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-04 13:05:40,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:05:40 BoogieIcfgContainer [2020-09-04 13:05:40,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:05:40,856 INFO L168 Benchmark]: Toolchain (without parser) took 3244.35 ms. Allocated memory was 144.2 MB in the beginning and 235.9 MB in the end (delta: 91.8 MB). Free memory was 103.6 MB in the beginning and 96.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 99.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:40,857 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 144.2 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:05:40,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.62 ms. Allocated memory is still 144.2 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:40,859 INFO L168 Benchmark]: Boogie Preprocessor took 117.45 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:40,860 INFO L168 Benchmark]: RCFGBuilder took 308.57 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 168.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:40,861 INFO L168 Benchmark]: TraceAbstraction took 2507.90 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.8 MB in the beginning and 96.0 MB in the end (delta: 72.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:40,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 144.2 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.62 ms. Allocated memory is still 144.2 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.45 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.57 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 168.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2507.90 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.8 MB in the beginning and 96.0 MB in the end (delta: 72.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 103 SDslu, 517 SDs, 0 SdLazy, 330 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 7192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...