/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=NARROWEST --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-simple/id_b3_o2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:21:42,153 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-21 21:21:42,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:21:42,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:21:42,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:21:42,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:21:42,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:21:42,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:21:42,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:21:42,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:21:42,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:21:42,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:21:42,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:21:42,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:21:42,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:21:42,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:21:42,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:21:42,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:21:42,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:21:42,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:21:42,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:21:42,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:21:42,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 21:21:42,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:21:42,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:21:42,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:21:42,264 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 21:21:42,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:21:42,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:21:42,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:21:42,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:21:42,310 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:21:42,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:21:42,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:21:42,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:21:42,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:21:42,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:21:42,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:21:42,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:21:42,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:21:42,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:21:42,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:21:42,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:21:42,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:21:42,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:21:42,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:21:42,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:21:42,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:21:42,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:21:42,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:21:42,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:21:42,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:21:42,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:21:42,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:21:42,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:21:42,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:21:42,317 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:21:42,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:21:42,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:21:42,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:21:42,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:21:42,631 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:21:42,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-08-21 21:21:42,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47885d2de/30b145cc2a8e4465a53699a0b0e4b99a/FLAGbb0075db6 [2020-08-21 21:21:43,160 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:21:43,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-08-21 21:21:43,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47885d2de/30b145cc2a8e4465a53699a0b0e4b99a/FLAGbb0075db6 [2020-08-21 21:21:43,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47885d2de/30b145cc2a8e4465a53699a0b0e4b99a [2020-08-21 21:21:43,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:21:43,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:21:43,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:21:43,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:21:43,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:21:43,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0177e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43, skipping insertion in model container [2020-08-21 21:21:43,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:21:43,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:21:43,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:21:43,756 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:21:43,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:21:43,787 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:21:43,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43 WrapperNode [2020-08-21 21:21:43,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:21:43,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:21:43,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:21:43,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:21:43,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (1/1) ... [2020-08-21 21:21:43,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:21:43,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:21:43,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:21:43,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:21:43,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (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 21:21:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:21:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:21:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-21 21:21:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:21:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:21:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:21:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-21 21:21:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:21:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:21:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:21:44,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:21:44,128 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:21:44,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:21:44 BoogieIcfgContainer [2020-08-21 21:21:44,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:21:44,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:21:44,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:21:44,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:21:44,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:21:43" (1/3) ... [2020-08-21 21:21:44,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640ad6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:21:44, skipping insertion in model container [2020-08-21 21:21:44,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:43" (2/3) ... [2020-08-21 21:21:44,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640ad6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:21:44, skipping insertion in model container [2020-08-21 21:21:44,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:21:44" (3/3) ... [2020-08-21 21:21:44,139 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2020-08-21 21:21:44,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:21:44,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:21:44,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:21:44,190 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:21:44,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:21:44,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:21:44,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:21:44,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:21:44,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:21:44,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:21:44,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:21:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-21 21:21:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 21:21:44,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:44,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:21:44,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2020-08-21 21:21:44,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:44,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114306484] [2020-08-21 21:21:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,587 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 21:21:44,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114306484] [2020-08-21 21:21:44,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:44,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:21:44,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764207359] [2020-08-21 21:21:44,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:21:44,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:21:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:44,619 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-08-21 21:21:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:44,665 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-21 21:21:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:21:44,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 21:21:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:44,675 INFO L225 Difference]: With dead ends: 31 [2020-08-21 21:21:44,675 INFO L226 Difference]: Without dead ends: 19 [2020-08-21 21:21:44,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-21 21:21:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-21 21:21:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 21:21:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-21 21:21:44,723 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-08-21 21:21:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:44,723 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-21 21:21:44,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:21:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-21 21:21:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:21:44,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:44,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:21:44,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:21:44,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2020-08-21 21:21:44,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:44,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491624565] [2020-08-21 21:21:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 21:21:44,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491624565] [2020-08-21 21:21:44,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:44,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:21:44,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995469471] [2020-08-21 21:21:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:21:44,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:44,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:21:44,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:44,857 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-08-21 21:21:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:44,879 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-21 21:21:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:21:44,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 21:21:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:44,882 INFO L225 Difference]: With dead ends: 25 [2020-08-21 21:21:44,882 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 21:21:44,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 21:21:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-21 21:21:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 21:21:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-21 21:21:44,890 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2020-08-21 21:21:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:44,890 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-21 21:21:44,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:21:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-21 21:21:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:21:44,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:44,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:21:44,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:21:44,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2020-08-21 21:21:44,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:44,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78951950] [2020-08-21 21:21:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:45,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:45,062 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 21:21:45,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78951950] [2020-08-21 21:21:45,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:21:45,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 21:21:45,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361003460] [2020-08-21 21:21:45,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:21:45,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:21:45,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:21:45,065 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-08-21 21:21:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:45,129 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-08-21 21:21:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:21:45,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-21 21:21:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:45,132 INFO L225 Difference]: With dead ends: 37 [2020-08-21 21:21:45,132 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 21:21:45,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:21:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 21:21:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-08-21 21:21:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 21:21:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-08-21 21:21:45,141 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-08-21 21:21:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:45,141 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-08-21 21:21:45,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:21:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-08-21 21:21:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 21:21:45,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:45,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:21:45,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:21:45,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash 405472645, now seen corresponding path program 2 times [2020-08-21 21:21:45,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:45,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730033636] [2020-08-21 21:21:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:21:45,202 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:21:45,202 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:21:45,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:21:45,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:21:45 BoogieIcfgContainer [2020-08-21 21:21:45,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:21:45,259 INFO L168 Benchmark]: Toolchain (without parser) took 1705.78 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 117.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:45,260 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:21:45,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.44 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:45,262 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 140.0 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:45,265 INFO L168 Benchmark]: RCFGBuilder took 312.54 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 171.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:45,271 INFO L168 Benchmark]: TraceAbstraction took 1120.72 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 117.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:45,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.44 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.82 ms. Allocated memory is still 140.0 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.54 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 171.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1120.72 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 117.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id((unsigned int)x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id((unsigned int)x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id((unsigned int)x-1) [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; [L6] RET, EXPR id((unsigned int)x-1) [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 2 [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 4 SDslu, 196 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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 incorrect! Received shutdown request...