/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:52,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:52,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:52,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:52,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:52,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:52,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:52,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:52,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:52,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:52,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:52,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:52,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:52,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:52,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:52,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:52,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:52,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:52,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:52,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:52,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:52,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:52,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:52,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:52,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:52,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:52,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:52,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:52,611 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 [2020-07-07 11:33:52,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:52,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:52,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:52,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:52,627 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:52,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:52,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:52,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:52,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:52,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:52,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:52,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:52,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:52,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:52,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:52,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:52,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:52,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:52,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:52,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:52,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:52,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:52,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:52,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:52,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:52,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:52,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:52,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:52,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:52,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:52,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:52,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:52,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:52,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:52,935 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:52,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-07-07 11:33:53,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997a7dc34/115a119401424d23a94fa2fb1b7a8bc5/FLAGb86778693 [2020-07-07 11:33:53,530 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:53,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-07-07 11:33:53,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997a7dc34/115a119401424d23a94fa2fb1b7a8bc5/FLAGb86778693 [2020-07-07 11:33:53,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997a7dc34/115a119401424d23a94fa2fb1b7a8bc5 [2020-07-07 11:33:53,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:53,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:53,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:53,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:53,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:53,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:53" (1/1) ... [2020-07-07 11:33:53,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538db008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:53, skipping insertion in model container [2020-07-07 11:33:53,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:53" (1/1) ... [2020-07-07 11:33:53,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:53,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:54,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:54,144 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:54,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:54,181 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:54,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54 WrapperNode [2020-07-07 11:33:54,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:54,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:54,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:54,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:54,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:54,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:54,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:54,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:54,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (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 [2020-07-07 11:33:54,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:54,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:54,545 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:54,546 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:33:54,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:54 BoogieIcfgContainer [2020-07-07 11:33:54,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:54,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:54,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:54,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:54,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:53" (1/3) ... [2020-07-07 11:33:54,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476fddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:54, skipping insertion in model container [2020-07-07 11:33:54,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (2/3) ... [2020-07-07 11:33:54,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476fddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:54, skipping insertion in model container [2020-07-07 11:33:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:54" (3/3) ... [2020-07-07 11:33:54,558 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-07-07 11:33:54,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:54,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:54,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:54,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:54,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:54,615 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:54,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:54,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:54,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:54,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:54,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-07 11:33:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:33:54,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:54,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:54,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:54,646 INFO L82 PathProgramCache]: Analyzing trace with hash 489049782, now seen corresponding path program 1 times [2020-07-07 11:33:54,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:54,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584398758] [2020-07-07 11:33:54,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:54,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584398758] [2020-07-07 11:33:54,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:54,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:54,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485721676] [2020-07-07 11:33:54,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:54,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:54,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:54,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:54,959 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-07-07 11:33:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,116 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-07 11:33:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:55,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-07 11:33:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,128 INFO L225 Difference]: With dead ends: 33 [2020-07-07 11:33:55,128 INFO L226 Difference]: Without dead ends: 16 [2020-07-07 11:33:55,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:33:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-07 11:33:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-07 11:33:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-07 11:33:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-07-07 11:33:55,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-07-07 11:33:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,167 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-07-07 11:33:55,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-07 11:33:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:33:55,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:55,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:55,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:55,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1823317113, now seen corresponding path program 1 times [2020-07-07 11:33:55,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:55,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873554231] [2020-07-07 11:33:55,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873554231] [2020-07-07 11:33:55,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95220435] [2020-07-07 11:33:55,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,355 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:33:55,362 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:55,419 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,424 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:55,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-07 11:33:55,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568631071] [2020-07-07 11:33:55,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:55,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:55,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:55,470 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-07-07 11:33:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,586 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-07 11:33:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:55,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-07 11:33:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,587 INFO L225 Difference]: With dead ends: 21 [2020-07-07 11:33:55,588 INFO L226 Difference]: Without dead ends: 18 [2020-07-07 11:33:55,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-07 11:33:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-07 11:33:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-07 11:33:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-07 11:33:55,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-07-07 11:33:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,596 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-07 11:33:55,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-07 11:33:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:33:55,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:55,597 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:55,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:33:55,799 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash -140999300, now seen corresponding path program 2 times [2020-07-07 11:33:55,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:55,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326908018] [2020-07-07 11:33:55,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:33:55,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326908018] [2020-07-07 11:33:55,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:55,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:55,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042690732] [2020-07-07 11:33:55,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:55,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:55,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:55,867 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-07-07 11:33:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,916 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-07 11:33:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:55,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-07 11:33:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,917 INFO L225 Difference]: With dead ends: 18 [2020-07-07 11:33:55,918 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:55,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:55,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-07 11:33:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,920 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:55,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:55,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:55,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:33:55,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:55,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:55,989 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-07-07 11:33:55,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:55,990 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:55,990 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:55,990 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:55,990 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:55,991 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:55,991 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-07 11:33:55,991 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:55,991 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:55,992 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-07-07 11:33:55,992 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-07-07 11:33:55,992 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-07-07 11:33:55,992 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-07-07 11:33:55,992 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-07-07 11:33:55,993 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-07 11:33:55,993 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-07-07 11:33:55,993 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-07-07 11:33:55,993 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-07-07 11:33:55,993 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-07-07 11:33:55,994 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-07-07 11:33:56,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:56 BoogieIcfgContainer [2020-07-07 11:33:56,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:56,038 INFO L168 Benchmark]: Toolchain (without parser) took 2164.00 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 100.8 MB in the beginning and 199.1 MB in the end (delta: -98.3 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,039 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.14 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 90.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,041 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 137.4 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,043 INFO L168 Benchmark]: RCFGBuilder took 339.14 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.2 MB in the beginning and 166.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,044 INFO L168 Benchmark]: TraceAbstraction took 1484.14 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 166.1 MB in the beginning and 199.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,048 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 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.14 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 90.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 137.4 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.14 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.2 MB in the beginning and 166.8 MB in the end (delta: -77.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1484.14 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 166.1 MB in the beginning and 199.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 98 SDs, 0 SdLazy, 99 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 5 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2588 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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...