/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:09:02,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:09:02,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:09:02,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:09:02,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:09:02,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:09:02,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:09:02,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:09:02,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:09:02,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:09:02,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:09:02,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:09:02,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:09:02,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:09:02,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:09:02,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:09:02,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:09:02,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:09:02,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:09:02,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:09:02,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:09:02,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:09:02,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:09:02,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:09:02,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:09:02,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:09:02,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:09:02,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:09:02,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:09:02,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:09:02,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:09:02,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:09:02,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:09:02,868 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:09:02,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:09:02,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:09:02,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:09:02,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:09:02,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:09:02,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:09:02,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:09:02,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:09:02,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:09:02,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:09:02,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:09:02,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:09:02,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:09:02,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:09:02,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:09:02,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:09:02,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:09:02,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:09:02,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:09:02,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:09:02,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:09:02,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:02,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:09:02,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:09:02,873 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 12:09:03,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:09:03,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:09:03,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:09:03,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:09:03,172 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:09:03,174 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2020-07-21 12:09:03,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9434a347/08cf6cc3befd46cbac2db26abe26d504/FLAG7a5efe7da [2020-07-21 12:09:03,697 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:09:03,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2020-07-21 12:09:03,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9434a347/08cf6cc3befd46cbac2db26abe26d504/FLAG7a5efe7da [2020-07-21 12:09:04,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9434a347/08cf6cc3befd46cbac2db26abe26d504 [2020-07-21 12:09:04,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:09:04,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:09:04,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:09:04,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:09:04,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:09:04,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626e5c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04, skipping insertion in model container [2020-07-21 12:09:04,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:09:04,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:09:04,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:09:04,303 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:09:04,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:09:04,326 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:09:04,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04 WrapperNode [2020-07-21 12:09:04,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:09:04,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:09:04,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:09:04,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:09:04,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... [2020-07-21 12:09:04,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:09:04,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:09:04,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:09:04,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:09:04,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:09:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:09:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:09:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 12:09:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:09:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:09:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:09:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 12:09:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:09:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:09:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:09:04,651 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:09:04,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 12:09:04,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:09:04 BoogieIcfgContainer [2020-07-21 12:09:04,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:09:04,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:09:04,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:09:04,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:09:04,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:09:04" (1/3) ... [2020-07-21 12:09:04,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60052c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:09:04, skipping insertion in model container [2020-07-21 12:09:04,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:04" (2/3) ... [2020-07-21 12:09:04,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60052c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:09:04, skipping insertion in model container [2020-07-21 12:09:04,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:09:04" (3/3) ... [2020-07-21 12:09:04,661 INFO L109 eAbstractionObserver]: Analyzing ICFG even.c [2020-07-21 12:09:04,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:09:04,679 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:09:04,692 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:09:04,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:09:04,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:09:04,715 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:09:04,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:09:04,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:09:04,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:09:04,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:09:04,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:09:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-21 12:09:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 12:09:04,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:09:04,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:09:04,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:09:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:09:04,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-07-21 12:09:04,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:09:04,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804853530] [2020-07-21 12:09:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:09:04,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:09:04,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:09:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:09:04,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:09:04,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804853530] [2020-07-21 12:09:04,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:09:04,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:09:04,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799985925] [2020-07-21 12:09:04,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:09:04,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:09:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:09:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:09:04,870 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-21 12:09:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:09:04,896 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-21 12:09:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:09:04,898 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 12:09:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:09:04,906 INFO L225 Difference]: With dead ends: 31 [2020-07-21 12:09:04,906 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 12:09:04,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:09:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 12:09:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 12:09:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 12:09:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-21 12:09:04,948 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-21 12:09:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:09:04,949 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-21 12:09:04,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:09:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-21 12:09:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 12:09:04,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:09:04,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:09:05,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:05,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:09:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:09:05,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2020-07-21 12:09:05,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:09:05,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332020616] [2020-07-21 12:09:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:09:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:09:05,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:09:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:09:05,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:09:05,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332020616] [2020-07-21 12:09:05,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:09:05,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:09:05,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595788162] [2020-07-21 12:09:05,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:09:05,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:09:05,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:09:05,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:09:05,265 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-07-21 12:09:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:09:05,310 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-21 12:09:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:09:05,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-21 12:09:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:09:05,314 INFO L225 Difference]: With dead ends: 19 [2020-07-21 12:09:05,314 INFO L226 Difference]: Without dead ends: 14 [2020-07-21 12:09:05,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:09:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-21 12:09:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-21 12:09:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-21 12:09:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-21 12:09:05,320 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-07-21 12:09:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:09:05,321 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-21 12:09:05,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:09:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-21 12:09:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 12:09:05,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:09:05,322 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:09:05,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:05,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:09:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:09:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1109630717, now seen corresponding path program 1 times [2020-07-21 12:09:05,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:09:05,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120514445] [2020-07-21 12:09:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:09:05,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:09:05,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:09:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:09:05,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:09:05,644 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:09:05,646 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:09:05,650 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:09:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 12:09:05,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120514445] [2020-07-21 12:09:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 12:09:05,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-07-21 12:09:05,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807902930] [2020-07-21 12:09:05,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:09:05,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:09:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:09:05,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:09:05,693 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2020-07-21 12:09:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:09:05,720 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-21 12:09:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:09:05,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 12:09:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:09:05,721 INFO L225 Difference]: With dead ends: 14 [2020-07-21 12:09:05,722 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 12:09:05,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:09:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 12:09:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 12:09:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 12:09:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 12:09:05,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-21 12:09:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:09:05,724 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 12:09:05,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:09:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 12:09:05,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 12:09:05,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:09:05,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 12:09:06,012 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 12:09:06,012 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 12:09:06,012 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 12:09:06,013 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 12:09:06,013 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 12:09:06,013 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 12:09:06,013 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2020-07-21 12:09:06,013 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2020-07-21 12:09:06,013 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-07-21 12:09:06,013 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2020-07-21 12:09:06,014 INFO L268 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-07-21 12:09:06,014 INFO L264 CegarLoopResult]: At program point L11-3(lines 11 13) the Hoare annotation is: (= 0 (mod main_~x~0 2)) [2020-07-21 12:09:06,014 INFO L264 CegarLoopResult]: At program point L11-4(lines 11 13) the Hoare annotation is: (= 0 (mod main_~x~0 2)) [2020-07-21 12:09:06,014 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-21 12:09:06,014 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-21 12:09:06,014 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 12:09:06,015 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-21 12:09:06,015 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-21 12:09:06,015 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-21 12:09:06,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:09:06 BoogieIcfgContainer [2020-07-21 12:09:06,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:09:06,038 INFO L168 Benchmark]: Toolchain (without parser) took 1942.53 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 114.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,041 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.81 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,044 INFO L168 Benchmark]: Boogie Preprocessor took 100.59 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.3 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,046 INFO L168 Benchmark]: RCFGBuilder took 226.71 ms. Allocated memory is still 200.3 MB. Free memory was 180.4 MB in the beginning and 168.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,052 INFO L168 Benchmark]: TraceAbstraction took 1379.32 ms. Allocated memory is still 200.3 MB. Free memory was 167.8 MB in the beginning and 114.1 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:09:06,064 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.81 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.59 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.3 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 226.71 ms. Allocated memory is still 200.3 MB. Free memory was 180.4 MB in the beginning and 168.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1379.32 ms. Allocated memory is still 200.3 MB. Free memory was 167.8 MB in the beginning and 114.1 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 == x % 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 2 SDslu, 47 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1025 SizeOfPredicates, 4 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 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...