/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:29:23,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:29:23,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:29:23,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:29:23,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:29:23,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:29:23,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:29:23,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:29:23,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:29:23,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:29:23,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:29:23,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:29:23,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:29:23,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:29:23,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:29:23,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:29:23,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:29:23,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:29:23,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:29:23,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:29:23,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:29:23,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:29:23,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:29:23,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:29:23,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:29:23,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:29:23,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:29:23,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:29:23,717 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 [2020-07-20 05:29:23,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:29:23,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:29:23,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:29:23,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:29:23,743 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:29:23,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:29:23,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:29:23,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:29:23,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:29:23,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:29:23,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:29:23,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:29:23,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:29:23,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:29:23,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:29:23,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:29:23,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:29:23,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:29:23,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:29:23,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:29:23,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:29:23,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:29:23,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:29:23,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:29:23,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:29:23,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:29:23,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:29:23,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:29:23,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:29:23,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:29:24,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:29:24,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:29:24,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:29:24,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:29:24,070 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:29:24,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-20 05:29:24,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f6fac8b/881200e4993044b1991a00c3de16aaf7/FLAGd695debc7 [2020-07-20 05:29:24,583 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:29:24,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-20 05:29:24,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f6fac8b/881200e4993044b1991a00c3de16aaf7/FLAGd695debc7 [2020-07-20 05:29:25,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f6fac8b/881200e4993044b1991a00c3de16aaf7 [2020-07-20 05:29:25,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:29:25,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:29:25,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:25,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:29:25,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:29:25,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a21d1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25, skipping insertion in model container [2020-07-20 05:29:25,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:29:25,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:29:25,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:25,236 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:29:25,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:25,269 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:29:25,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25 WrapperNode [2020-07-20 05:29:25,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:25,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:29:25,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:29:25,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:29:25,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (1/1) ... [2020-07-20 05:29:25,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:29:25,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:29:25,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:29:25,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:29:25,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (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 [2020-07-20 05:29:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:29:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:29:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-07-20 05:29:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:29:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:29:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:29:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-07-20 05:29:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:29:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:29:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:29:25,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:29:25,646 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:29:25,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:25 BoogieIcfgContainer [2020-07-20 05:29:25,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:29:25,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:29:25,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:29:25,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:29:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:29:25" (1/3) ... [2020-07-20 05:29:25,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37277438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:25, skipping insertion in model container [2020-07-20 05:29:25,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:25" (2/3) ... [2020-07-20 05:29:25,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37277438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:25, skipping insertion in model container [2020-07-20 05:29:25,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:25" (3/3) ... [2020-07-20 05:29:25,659 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-07-20 05:29:25,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:29:25,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:29:25,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:29:25,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:29:25,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:29:25,734 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:29:25,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:29:25,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:29:25,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:29:25,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:29:25,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:29:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-20 05:29:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:29:25,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:25,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:25,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2020-07-20 05:29:25,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:25,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127816388] [2020-07-20 05:29:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:29:26,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127816388] [2020-07-20 05:29:26,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:26,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:29:26,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637937255] [2020-07-20 05:29:26,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:29:26,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:29:26,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:26,092 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-20 05:29:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:26,283 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-20 05:29:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:29:26,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-20 05:29:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:26,308 INFO L225 Difference]: With dead ends: 40 [2020-07-20 05:29:26,308 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 05:29:26,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 05:29:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 05:29:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 05:29:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-20 05:29:26,396 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-20 05:29:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:26,397 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-20 05:29:26,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:29:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-20 05:29:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 05:29:26,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:26,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:26,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:29:26,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2020-07-20 05:29:26,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:26,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28556251] [2020-07-20 05:29:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:29:26,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28556251] [2020-07-20 05:29:26,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:26,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:29:26,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132588568] [2020-07-20 05:29:26,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:29:26,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:26,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:29:26,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:26,546 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-20 05:29:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:26,599 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-20 05:29:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:29:26,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-07-20 05:29:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:26,602 INFO L225 Difference]: With dead ends: 30 [2020-07-20 05:29:26,602 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 05:29:26,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 05:29:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 05:29:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 05:29:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-20 05:29:26,613 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-07-20 05:29:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:26,613 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-20 05:29:26,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:29:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-20 05:29:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:29:26,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:26,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:26,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:29:26,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2020-07-20 05:29:26,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:26,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104086996] [2020-07-20 05:29:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 05:29:26,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104086996] [2020-07-20 05:29:26,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:26,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:29:26,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959066096] [2020-07-20 05:29:26,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:29:26,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:29:26,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:26,765 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-20 05:29:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:26,879 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-07-20 05:29:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:29:26,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 05:29:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:26,881 INFO L225 Difference]: With dead ends: 36 [2020-07-20 05:29:26,882 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 05:29:26,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 05:29:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-20 05:29:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 05:29:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-07-20 05:29:26,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 23 [2020-07-20 05:29:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:26,893 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-07-20 05:29:26,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:29:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-20 05:29:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:29:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:26,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:26,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:29:26,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2020-07-20 05:29:26,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:26,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299797555] [2020-07-20 05:29:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 05:29:27,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299797555] [2020-07-20 05:29:27,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:27,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 05:29:27,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512864192] [2020-07-20 05:29:27,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 05:29:27,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:27,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 05:29:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:27,034 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-07-20 05:29:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:27,157 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-20 05:29:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:29:27,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-20 05:29:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:27,159 INFO L225 Difference]: With dead ends: 36 [2020-07-20 05:29:27,160 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 05:29:27,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-20 05:29:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 05:29:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 05:29:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 05:29:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-20 05:29:27,168 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 23 [2020-07-20 05:29:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-20 05:29:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 05:29:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-20 05:29:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:29:27,170 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:27,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:27,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:29:27,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:27,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2020-07-20 05:29:27,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:27,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944883560] [2020-07-20 05:29:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 05:29:27,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944883560] [2020-07-20 05:29:27,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:27,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 05:29:27,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949228957] [2020-07-20 05:29:27,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 05:29:27,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:27,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 05:29:27,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:27,252 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2020-07-20 05:29:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:27,331 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-20 05:29:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:29:27,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-20 05:29:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:27,333 INFO L225 Difference]: With dead ends: 31 [2020-07-20 05:29:27,333 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 05:29:27,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 05:29:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-07-20 05:29:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 05:29:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-20 05:29:27,340 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2020-07-20 05:29:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:27,341 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-20 05:29:27,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 05:29:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-20 05:29:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:29:27,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:27,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:27,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 05:29:27,343 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2020-07-20 05:29:27,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:27,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709218435] [2020-07-20 05:29:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 05:29:27,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709218435] [2020-07-20 05:29:27,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:27,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 05:29:27,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531407241] [2020-07-20 05:29:27,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 05:29:27,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:27,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 05:29:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:27,416 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-07-20 05:29:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:27,465 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-07-20 05:29:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:29:27,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-20 05:29:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:27,467 INFO L225 Difference]: With dead ends: 34 [2020-07-20 05:29:27,467 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 05:29:27,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 05:29:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 05:29:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 05:29:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-07-20 05:29:27,474 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2020-07-20 05:29:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:27,475 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-07-20 05:29:27,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 05:29:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-07-20 05:29:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 05:29:27,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:27,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:27,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 05:29:27,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2020-07-20 05:29:27,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:27,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483393410] [2020-07-20 05:29:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dc34c51 [2020-07-20 05:29:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 05:29:27,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483393410] [2020-07-20 05:29:27,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:27,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 05:29:27,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004033830] [2020-07-20 05:29:27,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 05:29:27,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:27,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 05:29:27,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:29:27,579 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-07-20 05:29:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:27,641 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-20 05:29:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 05:29:27,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-07-20 05:29:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:27,642 INFO L225 Difference]: With dead ends: 30 [2020-07-20 05:29:27,643 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:29:27,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-20 05:29:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:29:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:29:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:29:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:29:27,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-07-20 05:29:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:27,645 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:29:27,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 05:29:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:29:27,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:29:27,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 05:29:27,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:29:27,713 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:29:27,713 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:29:27,713 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-07-20 05:29:27,714 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-07-20 05:29:27,714 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 1 gcd_~y1) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (< gcd_~y1 gcd_~y2)) [2020-07-20 05:29:27,714 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 05:29:27,714 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-07-20 05:29:27,714 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ gcd_~y2 1) gcd_~y1) (<= 1 gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|)) [2020-07-20 05:29:27,715 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-07-20 05:29:27,715 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-07-20 05:29:27,715 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-20 05:29:27,715 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-07-20 05:29:27,715 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:29:27,716 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:29:27,716 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:29:27,716 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:29:27,716 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-07-20 05:29:27,716 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-07-20 05:29:27,717 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-07-20 05:29:27,717 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-07-20 05:29:27,717 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-20 05:29:27,717 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-07-20 05:29:27,717 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~m~0) (<= 1 main_~n~0)) [2020-07-20 05:29:27,718 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-07-20 05:29:27,718 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-07-20 05:29:27,718 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-20 05:29:27,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:29:27 BoogieIcfgContainer [2020-07-20 05:29:27,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:29:27,727 INFO L168 Benchmark]: Toolchain (without parser) took 2703.42 ms. Allocated memory was 138.9 MB in the beginning and 236.5 MB in the end (delta: 97.5 MB). Free memory was 103.8 MB in the beginning and 115.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,728 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 93.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,730 INFO L168 Benchmark]: Boogie Preprocessor took 26.86 ms. Allocated memory is still 138.9 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,731 INFO L168 Benchmark]: RCFGBuilder took 352.80 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 167.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,731 INFO L168 Benchmark]: TraceAbstraction took 2072.81 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 167.6 MB in the beginning and 115.4 MB in the end (delta: 52.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:27,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 93.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.86 ms. Allocated memory is still 138.9 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.80 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 167.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2072.81 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 167.6 MB in the beginning and 115.4 MB in the end (delta: 52.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 91 SDslu, 475 SDs, 0 SdLazy, 273 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 40 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 6864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...