/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 DAGSIZE --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 03:20:25,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:20:25,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:20:25,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:20:25,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:20:25,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:20:25,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:20:25,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:20:25,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:20:25,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:20:25,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:20:25,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:20:25,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:20:25,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:20:25,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:20:25,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:20:25,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:20:25,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:20:25,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:20:25,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:20:25,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:20:25,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:20:25,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:20:25,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:20:25,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:20:25,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:20:25,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:20:25,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:20:25,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:20:25,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:20:25,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:20:25,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:20:25,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:20:25,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:20:25,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:20:25,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:20:25,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:20:25,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:20:25,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:20:25,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:20:25,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:20:25,422 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 03:20:25,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:20:25,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:20:25,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:20:25,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:20:25,439 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:20:25,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:20:25,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:20:25,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:20:25,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:20:25,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:20:25,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:20:25,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:20:25,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:20:25,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:20:25,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:20:25,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:20:25,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:20:25,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:20:25,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:20:25,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:20:25,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:20:25,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:20:25,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:20:25,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:20:25,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 03:20:25,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:20:25,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:20:25,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:20:25,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:20:25,744 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:20:25,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-20 03:20:25,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0386eee42/4269d616c4d44593a61645252b1adf5a/FLAGf2e9abbd2 [2020-07-20 03:20:26,234 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:20:26,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-20 03:20:26,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0386eee42/4269d616c4d44593a61645252b1adf5a/FLAGf2e9abbd2 [2020-07-20 03:20:26,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0386eee42/4269d616c4d44593a61645252b1adf5a [2020-07-20 03:20:26,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:20:26,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:20:26,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:20:26,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:20:26,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:20:26,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4055cd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26, skipping insertion in model container [2020-07-20 03:20:26,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:20:26,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:20:26,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:20:26,914 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:20:26,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:20:26,948 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:20:26,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26 WrapperNode [2020-07-20 03:20:26,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:20:26,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:20:26,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:20:26,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:20:26,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (1/1) ... [2020-07-20 03:20:26,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:20:26,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:20:26,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:20:26,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:20:26,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (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 03:20:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:20:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:20:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-07-20 03:20:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:20:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:20:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:20:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-07-20 03:20:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:20:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:20:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:20:27,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:20:27,352 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 03:20:27,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:20:27 BoogieIcfgContainer [2020-07-20 03:20:27,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:20:27,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:20:27,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:20:27,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:20:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:20:26" (1/3) ... [2020-07-20 03:20:27,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceae62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:20:27, skipping insertion in model container [2020-07-20 03:20:27,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:20:26" (2/3) ... [2020-07-20 03:20:27,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceae62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:20:27, skipping insertion in model container [2020-07-20 03:20:27,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:20:27" (3/3) ... [2020-07-20 03:20:27,365 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-07-20 03:20:27,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:20:27,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:20:27,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:20:27,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:20:27,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:20:27,441 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:20:27,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:20:27,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:20:27,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:20:27,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:20:27,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:20:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-20 03:20:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 03:20:27,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:27,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:20:27,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2020-07-20 03:20:27,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:27,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593401756] [2020-07-20 03:20:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:27,823 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 03:20:27,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593401756] [2020-07-20 03:20:27,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:27,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:20:27,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531946039] [2020-07-20 03:20:27,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:20:27,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:20:27,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:20:27,855 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-20 03:20:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:28,022 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-20 03:20:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:20:28,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-20 03:20:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:28,037 INFO L225 Difference]: With dead ends: 40 [2020-07-20 03:20:28,037 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 03:20:28,046 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 03:20:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 03:20:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 03:20:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 03:20:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-20 03:20:28,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-20 03:20:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:28,090 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-20 03:20:28,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:20:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-20 03:20:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 03:20:28,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:28,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:20:28,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:20:28,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2020-07-20 03:20:28,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:28,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218018897] [2020-07-20 03:20:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,222 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 03:20:28,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218018897] [2020-07-20 03:20:28,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:28,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:20:28,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195271823] [2020-07-20 03:20:28,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:20:28,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:28,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:20:28,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:20:28,229 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-20 03:20:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:28,283 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-20 03:20:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:20:28,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-07-20 03:20:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:28,286 INFO L225 Difference]: With dead ends: 30 [2020-07-20 03:20:28,286 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 03:20:28,287 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 03:20:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 03:20:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 03:20:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 03:20:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-20 03:20:28,296 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-07-20 03:20:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:28,297 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-20 03:20:28,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:20:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-20 03:20:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:20:28,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:28,299 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 03:20:28,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:20:28,299 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2020-07-20 03:20:28,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:28,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130017516] [2020-07-20 03:20:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,434 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 03:20:28,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130017516] [2020-07-20 03:20:28,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:28,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:20:28,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877005693] [2020-07-20 03:20:28,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:20:28,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:28,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:20:28,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:20:28,437 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-20 03:20:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:28,556 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-07-20 03:20:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:20:28,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 03:20:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:28,558 INFO L225 Difference]: With dead ends: 36 [2020-07-20 03:20:28,559 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 03:20:28,559 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 03:20:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 03:20:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-20 03:20:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 03:20:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-07-20 03:20:28,569 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 23 [2020-07-20 03:20:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:28,569 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-07-20 03:20:28,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:20:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-20 03:20:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:20:28,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:28,572 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 03:20:28,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:20:28,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2020-07-20 03:20:28,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:28,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704995682] [2020-07-20 03:20:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,712 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 03:20:28,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704995682] [2020-07-20 03:20:28,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:28,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 03:20:28,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058028220] [2020-07-20 03:20:28,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 03:20:28,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 03:20:28,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:20:28,715 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-07-20 03:20:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:28,839 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-20 03:20:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:20:28,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-20 03:20:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:28,841 INFO L225 Difference]: With dead ends: 36 [2020-07-20 03:20:28,842 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 03:20:28,842 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 03:20:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 03:20:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 03:20:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 03:20:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-20 03:20:28,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 23 [2020-07-20 03:20:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:28,850 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-20 03:20:28,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 03:20:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-20 03:20:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:20:28,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:28,851 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 03:20:28,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:20:28,852 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:28,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:28,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2020-07-20 03:20:28,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:28,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28461628] [2020-07-20 03:20:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:28,936 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 03:20:28,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28461628] [2020-07-20 03:20:28,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:28,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 03:20:28,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602213991] [2020-07-20 03:20:28,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 03:20:28,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:28,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 03:20:28,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:20:28,938 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2020-07-20 03:20:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:28,994 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-20 03:20:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:20:28,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-20 03:20:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:28,996 INFO L225 Difference]: With dead ends: 31 [2020-07-20 03:20:28,996 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 03:20:28,997 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 03:20:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 03:20:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-07-20 03:20:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 03:20:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-20 03:20:29,004 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2020-07-20 03:20:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:29,004 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-20 03:20:29,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 03:20:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-20 03:20:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:20:29,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:29,006 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 03:20:29,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:20:29,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2020-07-20 03:20:29,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:29,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694677314] [2020-07-20 03:20:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,082 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 03:20:29,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694677314] [2020-07-20 03:20:29,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:29,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 03:20:29,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809153522] [2020-07-20 03:20:29,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 03:20:29,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 03:20:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:20:29,085 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-07-20 03:20:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:29,136 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-07-20 03:20:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:20:29,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-20 03:20:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:29,138 INFO L225 Difference]: With dead ends: 34 [2020-07-20 03:20:29,138 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 03:20:29,139 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 03:20:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 03:20:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 03:20:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 03:20:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-07-20 03:20:29,146 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2020-07-20 03:20:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:29,146 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-07-20 03:20:29,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 03:20:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-07-20 03:20:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 03:20:29,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:20:29,148 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 03:20:29,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:20:29,148 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:20:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:20:29,149 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2020-07-20 03:20:29,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:20:29,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852345997] [2020-07-20 03:20:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4755c067 [2020-07-20 03:20:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:20:29,304 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 03:20:29,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852345997] [2020-07-20 03:20:29,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:20:29,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 03:20:29,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835497351] [2020-07-20 03:20:29,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 03:20:29,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:20:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 03:20:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:20:29,307 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-07-20 03:20:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:20:29,372 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-20 03:20:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:20:29,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-07-20 03:20:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:20:29,374 INFO L225 Difference]: With dead ends: 30 [2020-07-20 03:20:29,374 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:20:29,375 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 03:20:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:20:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:20:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:20:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:20:29,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-07-20 03:20:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:20:29,376 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:20:29,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 03:20:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:20:29,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:20:29,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:20:29,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:20:29,465 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 03:20:29,465 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:20:29,465 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-07-20 03:20:29,466 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-07-20 03:20:29,466 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 03:20:29,466 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 03:20:29,466 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-07-20 03:20:29,467 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 03:20:29,467 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-07-20 03:20:29,467 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-07-20 03:20:29,467 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-20 03:20:29,467 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-07-20 03:20:29,467 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:20:29,467 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:20:29,467 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:20:29,468 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:20:29,468 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-07-20 03:20:29,468 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-07-20 03:20:29,468 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-07-20 03:20:29,468 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-07-20 03:20:29,468 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-20 03:20:29,469 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-07-20 03:20:29,469 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 03:20:29,469 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-07-20 03:20:29,469 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-07-20 03:20:29,469 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-20 03:20:29,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:20:29 BoogieIcfgContainer [2020-07-20 03:20:29,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:20:29,479 INFO L168 Benchmark]: Toolchain (without parser) took 2806.84 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 103.4 MB in the beginning and 116.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:20:29,480 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 03:20:29,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.88 ms. Allocated memory is still 145.8 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:20:29,481 INFO L168 Benchmark]: Boogie Preprocessor took 31.01 ms. Allocated memory is still 145.8 MB. Free memory was 93.4 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 03:20:29,482 INFO L168 Benchmark]: RCFGBuilder took 375.57 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 169.1 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:20:29,483 INFO L168 Benchmark]: TraceAbstraction took 2118.04 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.4 MB in the beginning and 116.4 MB in the end (delta: 52.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:20:29,487 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 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.88 ms. Allocated memory is still 145.8 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.01 ms. Allocated memory is still 145.8 MB. Free memory was 93.4 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 375.57 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 169.1 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2118.04 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.4 MB in the beginning and 116.4 MB in the end (delta: 52.0 MB). Peak memory consumption was 84.5 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: 0.6s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s 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, 0.0s SatisfiabilityAnalysisTime, 0.8s 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...