/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:06:19,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:06:19,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:06:19,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:06:19,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:06:19,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:06:19,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:06:19,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:06:19,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:06:19,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:06:19,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:06:19,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:06:19,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:06:19,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:06:19,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:06:19,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:06:19,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:06:19,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:06:19,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:06:19,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:06:19,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:06:19,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:06:19,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:06:19,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:06:19,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 18:06:19,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:06:19,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:06:19,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:06:19,772 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 [2020-08-21 18:06:19,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:06:19,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:06:19,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:06:19,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:06:19,798 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:06:19,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:06:19,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:06:19,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:06:19,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:06:19,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:06:19,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:06:19,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:06:19,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:06:19,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:06:19,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:06:19,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:06:19,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:06:19,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:06:19,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:06:19,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:06:19,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:06:19,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:06:19,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:06:19,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:06:19,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:06:19,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:06:19,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:06:19,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:06:19,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:06:19,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:06:20,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:06:20,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:06:20,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:06:20,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:06:20,160 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:06:20,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-08-21 18:06:20,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58205435f/5cf05189c2a64476a2c9909f74d91b03/FLAG88cbe7881 [2020-08-21 18:06:20,732 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:06:20,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-08-21 18:06:20,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58205435f/5cf05189c2a64476a2c9909f74d91b03/FLAG88cbe7881 [2020-08-21 18:06:21,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58205435f/5cf05189c2a64476a2c9909f74d91b03 [2020-08-21 18:06:21,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:06:21,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:06:21,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:06:21,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:06:21,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:06:21,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21, skipping insertion in model container [2020-08-21 18:06:21,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:06:21,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:06:21,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:06:21,398 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:06:21,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:06:21,426 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:06:21,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21 WrapperNode [2020-08-21 18:06:21,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:06:21,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:06:21,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:06:21,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:06:21,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (1/1) ... [2020-08-21 18:06:21,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:06:21,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:06:21,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:06:21,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:06:21,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (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 [2020-08-21 18:06:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:06:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:06:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-21 18:06:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:06:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:06:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:06:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-21 18:06:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:06:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:06:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:06:21,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:06:21,804 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:06:21,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:06:21 BoogieIcfgContainer [2020-08-21 18:06:21,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:06:21,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:06:21,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:06:21,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:06:21,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:06:21" (1/3) ... [2020-08-21 18:06:21,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2233b3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:06:21, skipping insertion in model container [2020-08-21 18:06:21,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:21" (2/3) ... [2020-08-21 18:06:21,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2233b3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:06:21, skipping insertion in model container [2020-08-21 18:06:21,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:06:21" (3/3) ... [2020-08-21 18:06:21,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-08-21 18:06:21,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:06:21,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:06:21,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:06:21,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:06:21,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:06:21,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:06:21,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:06:21,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:06:21,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:06:21,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:06:21,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:06:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-08-21 18:06:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 18:06:21,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:06:21,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:06:21,892 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:06:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:06:21,898 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-08-21 18:06:21,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:06:21,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587571834] [2020-08-21 18:06:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:06:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:06:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:06:22,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587571834] [2020-08-21 18:06:22,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:06:22,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:06:22,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547220671] [2020-08-21 18:06:22,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:06:22,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:06:22,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:06:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:06:22,352 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-08-21 18:06:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:06:22,523 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-21 18:06:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:06:22,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 18:06:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:06:22,537 INFO L225 Difference]: With dead ends: 38 [2020-08-21 18:06:22,541 INFO L226 Difference]: Without dead ends: 24 [2020-08-21 18:06:22,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:06:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-21 18:06:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-21 18:06:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 18:06:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-08-21 18:06:22,597 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-08-21 18:06:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:06:22,598 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-08-21 18:06:22,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:06:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-08-21 18:06:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 18:06:22,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:06:22,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:06:22,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:06:22,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:06:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:06:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-08-21 18:06:22,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:06:22,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479847385] [2020-08-21 18:06:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:06:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:06:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:06:22,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479847385] [2020-08-21 18:06:22,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:06:22,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:06:22,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710420406] [2020-08-21 18:06:22,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:06:22,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:06:22,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:06:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:06:22,739 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-08-21 18:06:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:06:22,827 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-21 18:06:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:06:22,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 18:06:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:06:22,830 INFO L225 Difference]: With dead ends: 35 [2020-08-21 18:06:22,830 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 18:06:22,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:06:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 18:06:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-21 18:06:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 18:06:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-21 18:06:22,840 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-08-21 18:06:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:06:22,840 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-21 18:06:22,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:06:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-21 18:06:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 18:06:22,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:06:22,842 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] [2020-08-21 18:06:22,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:06:22,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:06:22,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:06:22,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-08-21 18:06:22,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:06:22,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551314311] [2020-08-21 18:06:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:06:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:06:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:06:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:06:23,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551314311] [2020-08-21 18:06:23,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:06:23,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 18:06:23,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853478594] [2020-08-21 18:06:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:06:23,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:06:23,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:06:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:06:23,053 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-08-21 18:06:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:06:23,185 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-08-21 18:06:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:06:23,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-08-21 18:06:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:06:23,186 INFO L225 Difference]: With dead ends: 21 [2020-08-21 18:06:23,186 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:06:23,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:06:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:06:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:06:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:06:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:06:23,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-08-21 18:06:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:06:23,189 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:06:23,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:06:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:06:23,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:06:23,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:06:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:06:23,254 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 18:06:23,254 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:06:23,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:06:23,255 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 18:06:23,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 18:06:23,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 18:06:23,255 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-08-21 18:06:23,256 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-08-21 18:06:23,256 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-08-21 18:06:23,256 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-08-21 18:06:23,256 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-08-21 18:06:23,256 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-21 18:06:23,256 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-08-21 18:06:23,257 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (or (<= 1 main_~n~0) (= main_~n~0 0)) [2020-08-21 18:06:23,257 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-08-21 18:06:23,257 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-08-21 18:06:23,257 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-08-21 18:06:23,257 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= |addition_#in~n| 0))) [2020-08-21 18:06:23,258 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-08-21 18:06:23,258 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-08-21 18:06:23,258 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2020-08-21 18:06:23,258 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-08-21 18:06:23,258 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-08-21 18:06:23,259 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-08-21 18:06:23,259 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-08-21 18:06:23,259 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-08-21 18:06:23,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:06:23 BoogieIcfgContainer [2020-08-21 18:06:23,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:06:23,269 INFO L168 Benchmark]: Toolchain (without parser) took 2133.85 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 184.7 MB in the end (delta: -82.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,270 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.28 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,272 INFO L168 Benchmark]: Boogie Preprocessor took 110.91 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 92.2 MB in the beginning and 178.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,273 INFO L168 Benchmark]: RCFGBuilder took 269.75 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 166.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,274 INFO L168 Benchmark]: TraceAbstraction took 1455.98 ms. Allocated memory was 200.8 MB in the beginning and 234.4 MB in the end (delta: 33.6 MB). Free memory was 165.9 MB in the beginning and 184.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:23,278 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.28 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.91 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 92.2 MB in the beginning and 178.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.75 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 166.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1455.98 ms. Allocated memory was 200.8 MB in the beginning and 234.4 MB in the end (delta: 33.6 MB). Free memory was 165.9 MB in the beginning and 184.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 36 SDslu, 133 SDs, 0 SdLazy, 165 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 37 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 3835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...