/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 NUM_VARIABLES --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-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:26:09,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:26:09,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:26:09,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:26:09,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:26:09,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:26:09,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:26:09,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:26:09,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:26:09,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:26:09,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:26:09,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:26:09,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:26:09,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:26:09,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:26:09,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:26:09,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:26:09,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:26:09,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:26:09,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:26:09,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:26:09,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:26:09,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:26:09,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:26:09,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:26:09,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:26:09,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:26:09,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:26:09,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:26:09,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:26:09,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:26:09,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:26:09,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:26:09,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:26:09,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:26:09,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:26:09,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:26:09,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:26:09,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:26:09,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:26:09,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:26:09,357 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 01:26:09,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:26:09,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:26:09,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:26:09,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:26:09,374 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:26:09,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:26:09,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:26:09,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:26:09,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:26:09,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:26:09,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:26:09,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:26:09,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:26:09,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:26:09,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:26:09,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:26:09,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:26:09,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:26:09,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:26:09,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:26:09,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:26:09,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:26:09,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:26:09,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:26:09,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:26:09,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:26:09,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:26:09,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:26:09,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:26:09,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:26:09,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:26:09,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:26:09,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:26:09,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:26:09,802 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:26:09,803 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-07-20 01:26:09,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eaf1f24c/86198cf08cd7425b8c5ba257fd58ea61/FLAGfada04a89 [2020-07-20 01:26:10,384 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:26:10,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-07-20 01:26:10,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eaf1f24c/86198cf08cd7425b8c5ba257fd58ea61/FLAGfada04a89 [2020-07-20 01:26:10,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eaf1f24c/86198cf08cd7425b8c5ba257fd58ea61 [2020-07-20 01:26:10,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:26:10,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:26:10,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:26:10,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:26:10,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:26:10,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:26:10" (1/1) ... [2020-07-20 01:26:10,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f50e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:10, skipping insertion in model container [2020-07-20 01:26:10,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:26:10" (1/1) ... [2020-07-20 01:26:10,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:26:10,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:26:10,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:26:10,982 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:26:10,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:26:11,013 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:26:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11 WrapperNode [2020-07-20 01:26:11,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:26:11,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:26:11,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:26:11,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:26:11,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (1/1) ... [2020-07-20 01:26:11,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:26:11,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:26:11,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:26:11,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:26:11,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (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 01:26:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:26:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:26:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-20 01:26:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:26:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:26:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:26:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-20 01:26:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:26:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:26:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:26:11,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:26:11,382 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:26:11,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:26:11 BoogieIcfgContainer [2020-07-20 01:26:11,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:26:11,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:26:11,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:26:11,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:26:11,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:26:10" (1/3) ... [2020-07-20 01:26:11,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3db9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:26:11, skipping insertion in model container [2020-07-20 01:26:11,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:26:11" (2/3) ... [2020-07-20 01:26:11,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3db9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:26:11, skipping insertion in model container [2020-07-20 01:26:11,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:26:11" (3/3) ... [2020-07-20 01:26:11,416 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-07-20 01:26:11,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:26:11,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:26:11,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:26:11,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:26:11,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:26:11,526 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:26:11,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:26:11,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:26:11,526 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:26:11,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:26:11,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:26:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 01:26:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:26:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:11,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:11,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:11,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2020-07-20 01:26:11,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:11,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738820801] [2020-07-20 01:26:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:11,761 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 01:26:11,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738820801] [2020-07-20 01:26:11,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:26:11,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:26:11,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233190802] [2020-07-20 01:26:11,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:26:11,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:26:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:26:11,789 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-20 01:26:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:11,839 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-07-20 01:26:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:26:11,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 01:26:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:11,850 INFO L225 Difference]: With dead ends: 33 [2020-07-20 01:26:11,851 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 01:26:11,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:26:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 01:26:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 01:26:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 01:26:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 01:26:11,895 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-07-20 01:26:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:11,895 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 01:26:11,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:26:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 01:26:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 01:26:11,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:11,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:11,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:26:11,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2020-07-20 01:26:11,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:11,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107570019] [2020-07-20 01:26:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:26:12,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107570019] [2020-07-20 01:26:12,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:26:12,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:26:12,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612869912] [2020-07-20 01:26:12,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:26:12,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:26:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:26:12,101 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2020-07-20 01:26:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:12,135 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-20 01:26:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:26:12,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-20 01:26:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:12,138 INFO L225 Difference]: With dead ends: 31 [2020-07-20 01:26:12,138 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:26:12,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:26:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:26:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-20 01:26:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 01:26:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-07-20 01:26:12,147 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2020-07-20 01:26:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:12,148 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-07-20 01:26:12,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:26:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-20 01:26:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 01:26:12,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:12,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:12,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:26:12,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:12,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2020-07-20 01:26:12,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:12,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410834392] [2020-07-20 01:26:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:26:12,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410834392] [2020-07-20 01:26:12,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511949758] [2020-07-20 01:26:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b44a92a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:26:12,466 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b44a92a issued 4 check-sat command(s) [2020-07-20 01:26:12,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:26:12,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 01:26:12,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:26:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:26:12,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:26:12,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 01:26:12,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87159851] [2020-07-20 01:26:12,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:26:12,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:26:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:26:12,545 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2020-07-20 01:26:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:12,599 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-20 01:26:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:26:12,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-07-20 01:26:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:12,602 INFO L225 Difference]: With dead ends: 27 [2020-07-20 01:26:12,602 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:26:12,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:26:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:26:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 01:26:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 01:26:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-07-20 01:26:12,610 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-07-20 01:26:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:12,611 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-07-20 01:26:12,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:26:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-07-20 01:26:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 01:26:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:12,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:26:12,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:12,830 INFO L82 PathProgramCache]: Analyzing trace with hash 376843494, now seen corresponding path program 1 times [2020-07-20 01:26:12,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:12,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081048405] [2020-07-20 01:26:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:26:13,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081048405] [2020-07-20 01:26:13,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83026995] [2020-07-20 01:26:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b983723 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:26:13,049 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b983723 issued 4 check-sat command(s) [2020-07-20 01:26:13,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:26:13,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 01:26:13,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:26:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:26:13,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:26:13,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 01:26:13,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236844611] [2020-07-20 01:26:13,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:26:13,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:26:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:26:13,088 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2020-07-20 01:26:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:13,137 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-07-20 01:26:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:26:13,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-20 01:26:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:13,139 INFO L225 Difference]: With dead ends: 35 [2020-07-20 01:26:13,139 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 01:26:13,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:26:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 01:26:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-07-20 01:26:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 01:26:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-20 01:26:13,147 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 27 [2020-07-20 01:26:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:13,147 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-20 01:26:13,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:26:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-20 01:26:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 01:26:13,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:13,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:13,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:26:13,364 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash 405472645, now seen corresponding path program 2 times [2020-07-20 01:26:13,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:13,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553285055] [2020-07-20 01:26:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:26:13,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553285055] [2020-07-20 01:26:13,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853756578] [2020-07-20 01:26:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@476efc5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:26:13,578 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@476efc5 issued 4 check-sat command(s) [2020-07-20 01:26:13,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:26:13,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 01:26:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:26:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:26:13,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:26:13,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 01:26:13,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533810902] [2020-07-20 01:26:13,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 01:26:13,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 01:26:13,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:26:13,626 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 13 states. [2020-07-20 01:26:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:13,690 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-20 01:26:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:26:13,691 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-07-20 01:26:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:13,692 INFO L225 Difference]: With dead ends: 31 [2020-07-20 01:26:13,693 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 01:26:13,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:26:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 01:26:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-20 01:26:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 01:26:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-20 01:26:13,699 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 27 [2020-07-20 01:26:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:13,700 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-20 01:26:13,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:26:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-20 01:26:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 01:26:13,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:26:13,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:26:13,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:26:13,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:26:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:26:13,916 INFO L82 PathProgramCache]: Analyzing trace with hash -645661089, now seen corresponding path program 2 times [2020-07-20 01:26:13,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:26:13,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147440827] [2020-07-20 01:26:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432a9525 [2020-07-20 01:26:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:26:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-20 01:26:14,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147440827] [2020-07-20 01:26:14,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:26:14,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:26:14,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497249721] [2020-07-20 01:26:14,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:26:14,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:26:14,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:26:14,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:26:14,057 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-07-20 01:26:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:26:14,073 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-20 01:26:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:26:14,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 01:26:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:26:14,074 INFO L225 Difference]: With dead ends: 27 [2020-07-20 01:26:14,075 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:26:14,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:26:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:26:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:26:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:26:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:26:14,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-07-20 01:26:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:26:14,077 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:26:14,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:26:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:26:14,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:26:14,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 01:26:14,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:26:14,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:26:14,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:26:14,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:26:14,108 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:26:14,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:26:14,109 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:26:14,109 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-07-20 01:26:14,109 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-07-20 01:26:14,109 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-07-20 01:26:14,109 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-20 01:26:14,110 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-07-20 01:26:14,110 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-07-20 01:26:14,110 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-20 01:26:14,110 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-07-20 01:26:14,110 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-07-20 01:26:14,111 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-07-20 01:26:14,111 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-07-20 01:26:14,111 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-20 01:26:14,111 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-07-20 01:26:14,111 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 01:26:14,111 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-20 01:26:14,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:26:14 BoogieIcfgContainer [2020-07-20 01:26:14,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:26:14,125 INFO L168 Benchmark]: Toolchain (without parser) took 3343.56 ms. Allocated memory was 149.4 MB in the beginning and 230.2 MB in the end (delta: 80.7 MB). Free memory was 107.2 MB in the beginning and 115.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,131 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 149.4 MB. Free memory was 125.7 MB in the beginning and 125.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.07 ms. Allocated memory is still 149.4 MB. Free memory was 106.8 MB in the beginning and 97.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,134 INFO L168 Benchmark]: Boogie Preprocessor took 113.24 ms. Allocated memory was 149.4 MB in the beginning and 202.9 MB in the end (delta: 53.5 MB). Free memory was 97.1 MB in the beginning and 182.2 MB in the end (delta: -85.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,135 INFO L168 Benchmark]: RCFGBuilder took 258.06 ms. Allocated memory is still 202.9 MB. Free memory was 182.2 MB in the beginning and 170.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,136 INFO L168 Benchmark]: TraceAbstraction took 2733.95 ms. Allocated memory was 202.9 MB in the beginning and 230.2 MB in the end (delta: 27.3 MB). Free memory was 169.5 MB in the beginning and 115.1 MB in the end (delta: 54.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:26:14,148 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 149.4 MB. Free memory was 125.7 MB in the beginning and 125.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.07 ms. Allocated memory is still 149.4 MB. Free memory was 106.8 MB in the beginning and 97.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.24 ms. Allocated memory was 149.4 MB in the beginning and 202.9 MB in the end (delta: 53.5 MB). Free memory was 97.1 MB in the beginning and 182.2 MB in the end (delta: -85.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.06 ms. Allocated memory is still 202.9 MB. Free memory was 182.2 MB in the beginning and 170.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2733.95 ms. Allocated memory was 202.9 MB in the beginning and 230.2 MB in the end (delta: 27.3 MB). Free memory was 169.5 MB in the beginning and 115.1 MB in the end (delta: 54.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 18 SDslu, 474 SDs, 0 SdLazy, 107 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 9016 SizeOfPredicates, 7 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 77/105 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...