/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:18:01,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:18:01,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:18:01,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:18:01,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:18:01,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:18:01,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:18:01,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:18:01,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:18:01,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:18:01,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:18:01,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:18:01,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:18:01,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:18:01,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:18:01,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:18:01,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:18:01,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:18:01,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:18:01,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:18:01,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:18:01,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:18:01,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:18:01,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:18:01,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:18:01,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:18:01,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:18:01,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:18:01,510 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 14:18:01,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:18:01,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:18:01,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:18:01,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:18:01,551 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:18:01,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:18:01,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:18:01,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:18:01,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:18:01,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:18:01,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:18:01,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:18:01,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:18:01,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:18:01,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:18:01,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:18:01,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:18:01,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:18:01,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:18:01,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:18:01,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:18:01,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:18:01,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:18:01,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:18:01,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:18:01,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:18:01,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:01,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:18:01,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:18:01,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-20 14:18:01,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:18:01,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:18:01,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:18:01,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:18:01,957 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:18:01,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-07-20 14:18:02,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e50aa80f/ab487012b13b4a56b4f6f9e2732a765f/FLAGe6ce3890a [2020-07-20 14:18:02,714 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:18:02,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2020-07-20 14:18:02,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e50aa80f/ab487012b13b4a56b4f6f9e2732a765f/FLAGe6ce3890a [2020-07-20 14:18:03,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e50aa80f/ab487012b13b4a56b4f6f9e2732a765f [2020-07-20 14:18:03,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:18:03,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:18:03,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:18:03,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:18:03,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:18:03,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555a1582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03, skipping insertion in model container [2020-07-20 14:18:03,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:18:03,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:18:03,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:18:03,434 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:18:03,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:18:03,633 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:18:03,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03 WrapperNode [2020-07-20 14:18:03,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:18:03,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:18:03,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:18:03,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:18:03,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (1/1) ... [2020-07-20 14:18:03,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:18:03,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:18:03,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:18:03,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:18:03,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (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 14:18:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:18:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:18:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:18:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-07-20 14:18:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:18:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-07-20 14:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-07-20 14:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-07-20 14:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:18:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 14:18:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 14:18:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 14:18:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:18:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:18:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:18:04,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:18:04,422 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-20 14:18:04,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:18:04 BoogieIcfgContainer [2020-07-20 14:18:04,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:18:04,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:18:04,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:18:04,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:18:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:18:03" (1/3) ... [2020-07-20 14:18:04,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6478c222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:18:04, skipping insertion in model container [2020-07-20 14:18:04,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:03" (2/3) ... [2020-07-20 14:18:04,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6478c222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:18:04, skipping insertion in model container [2020-07-20 14:18:04,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:18:04" (3/3) ... [2020-07-20 14:18:04,441 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-07-20 14:18:04,455 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:18:04,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:18:04,485 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:18:04,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:18:04,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:18:04,519 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:18:04,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:18:04,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:18:04,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:18:04,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:18:04,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:18:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-07-20 14:18:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 14:18:04,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:04,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:04,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-07-20 14:18:04,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:04,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469011692] [2020-07-20 14:18:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:04,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:18:04,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:04,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:18:04,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:04,736 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 14:18:04,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:18:04,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469011692] [2020-07-20 14:18:04,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:18:04,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:18:04,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395149265] [2020-07-20 14:18:04,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:18:04,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:18:04,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:18:04,768 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2020-07-20 14:18:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:04,806 INFO L93 Difference]: Finished difference Result 122 states and 178 transitions. [2020-07-20 14:18:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:18:04,808 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 14:18:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:04,818 INFO L225 Difference]: With dead ends: 122 [2020-07-20 14:18:04,819 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 14:18:04,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:18:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 14:18:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-20 14:18:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 14:18:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-07-20 14:18:04,875 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-07-20 14:18:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:04,876 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-07-20 14:18:04,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:18:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-07-20 14:18:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 14:18:04,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:04,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:05,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:05,095 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:05,096 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-07-20 14:18:05,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:05,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859676059] [2020-07-20 14:18:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:05,179 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:18:05,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:05,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:18:05,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:05,252 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 14:18:05,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:18:05,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859676059] [2020-07-20 14:18:05,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:18:05,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:18:05,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147823650] [2020-07-20 14:18:05,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:18:05,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:05,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:18:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:18:05,263 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-07-20 14:18:05,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:05,344 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-07-20 14:18:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 14:18:05,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 14:18:05,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:05,346 INFO L225 Difference]: With dead ends: 38 [2020-07-20 14:18:05,347 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 14:18:05,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:18:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 14:18:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-07-20 14:18:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 14:18:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-07-20 14:18:05,357 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-07-20 14:18:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:05,357 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-07-20 14:18:05,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:18:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-20 14:18:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 14:18:05,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:05,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:05,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:05,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:05,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-07-20 14:18:05,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:05,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781437880] [2020-07-20 14:18:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:05,659 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:18:05,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:05,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:18:05,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:18:05,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:18:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:18:05,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781437880] [2020-07-20 14:18:05,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:18:05,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 14:18:05,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830474856] [2020-07-20 14:18:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:18:05,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:05,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:18:05,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:18:05,807 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-07-20 14:18:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:05,920 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-07-20 14:18:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:18:05,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-07-20 14:18:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:05,922 INFO L225 Difference]: With dead ends: 48 [2020-07-20 14:18:05,923 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 14:18:05,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2020-07-20 14:18:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 14:18:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-20 14:18:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 14:18:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-07-20 14:18:05,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 16 [2020-07-20 14:18:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:05,933 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-07-20 14:18:05,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:18:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-07-20 14:18:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 14:18:05,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:05,935 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:06,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:06,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:06,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:06,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1296658810, now seen corresponding path program 2 times [2020-07-20 14:18:06,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:06,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508045786] [2020-07-20 14:18:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:06,233 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:18:06,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:06,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:18:06,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 14:18:06,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:18:06,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508045786] [2020-07-20 14:18:06,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:18:06,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:18:06,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583018150] [2020-07-20 14:18:06,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:18:06,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:06,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:18:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:18:06,265 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-07-20 14:18:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:06,337 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-07-20 14:18:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 14:18:06,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-20 14:18:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:06,341 INFO L225 Difference]: With dead ends: 87 [2020-07-20 14:18:06,341 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 14:18:06,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:18:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 14:18:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2020-07-20 14:18:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 14:18:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-07-20 14:18:06,378 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2020-07-20 14:18:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:06,381 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-07-20 14:18:06,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:18:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-07-20 14:18:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 14:18:06,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:06,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:06,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:06,587 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 1 times [2020-07-20 14:18:06,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:06,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962496023] [2020-07-20 14:18:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:06,663 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:18:06,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:06,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:18:06,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:18:06,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:18:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:18:06,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962496023] [2020-07-20 14:18:06,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:18:06,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-07-20 14:18:06,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21079796] [2020-07-20 14:18:06,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 14:18:06,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:06,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 14:18:06,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2020-07-20 14:18:06,888 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 14 states. [2020-07-20 14:18:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:07,034 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-07-20 14:18:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 14:18:07,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-07-20 14:18:07,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:07,036 INFO L225 Difference]: With dead ends: 71 [2020-07-20 14:18:07,036 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 14:18:07,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2020-07-20 14:18:07,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 14:18:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 14:18:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 14:18:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-07-20 14:18:07,060 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 28 [2020-07-20 14:18:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:07,061 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-07-20 14:18:07,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 14:18:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-07-20 14:18:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 14:18:07,070 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:07,070 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:07,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:07,272 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 2 times [2020-07-20 14:18:07,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:07,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691892894] [2020-07-20 14:18:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:07,385 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:18:07,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:07,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:18:07,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:07,414 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:18:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-07-20 14:18:07,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:18:07,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691892894] [2020-07-20 14:18:07,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:18:07,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:18:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318561708] [2020-07-20 14:18:07,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:18:07,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:18:07,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:18:07,438 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-07-20 14:18:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:07,503 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-07-20 14:18:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:18:07,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-07-20 14:18:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:07,506 INFO L225 Difference]: With dead ends: 76 [2020-07-20 14:18:07,506 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 14:18:07,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:18:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 14:18:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-07-20 14:18:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 14:18:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-07-20 14:18:07,519 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 36 [2020-07-20 14:18:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:07,520 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-07-20 14:18:07,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:18:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-07-20 14:18:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 14:18:07,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:07,523 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:07,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:07,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:07,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:07,738 INFO L82 PathProgramCache]: Analyzing trace with hash -752575031, now seen corresponding path program 1 times [2020-07-20 14:18:07,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:07,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555530267] [2020-07-20 14:18:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:08,139 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:18:08,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:08,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:18:08,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 150 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-20 14:18:08,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:18:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 150 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-20 14:18:08,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555530267] [2020-07-20 14:18:08,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:18:08,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 14:18:08,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217201751] [2020-07-20 14:18:08,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:18:08,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:18:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:18:08,258 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 8 states. [2020-07-20 14:18:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:08,388 INFO L93 Difference]: Finished difference Result 168 states and 196 transitions. [2020-07-20 14:18:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:18:08,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-07-20 14:18:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:08,391 INFO L225 Difference]: With dead ends: 168 [2020-07-20 14:18:08,391 INFO L226 Difference]: Without dead ends: 133 [2020-07-20 14:18:08,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:18:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-20 14:18:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2020-07-20 14:18:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 14:18:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2020-07-20 14:18:08,405 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 69 [2020-07-20 14:18:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:08,406 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2020-07-20 14:18:08,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:18:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2020-07-20 14:18:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 14:18:08,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:08,408 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:08,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:08,624 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:08,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:08,624 INFO L82 PathProgramCache]: Analyzing trace with hash -618561525, now seen corresponding path program 2 times [2020-07-20 14:18:08,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:08,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518981212] [2020-07-20 14:18:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:09,623 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:18:09,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:09,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:18:09,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:09,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:18:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-07-20 14:18:09,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:18:09,699 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:18:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-07-20 14:18:09,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518981212] [2020-07-20 14:18:09,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:18:09,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 14:18:09,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098957360] [2020-07-20 14:18:09,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:18:09,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:18:09,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:18:09,748 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 8 states. [2020-07-20 14:18:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:09,892 INFO L93 Difference]: Finished difference Result 167 states and 201 transitions. [2020-07-20 14:18:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:18:09,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-07-20 14:18:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:09,895 INFO L225 Difference]: With dead ends: 167 [2020-07-20 14:18:09,895 INFO L226 Difference]: Without dead ends: 165 [2020-07-20 14:18:09,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:18:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-20 14:18:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-07-20 14:18:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-07-20 14:18:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2020-07-20 14:18:09,932 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 69 [2020-07-20 14:18:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:09,933 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2020-07-20 14:18:09,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:18:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2020-07-20 14:18:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 14:18:09,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:09,945 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:10,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:10,154 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:10,154 INFO L82 PathProgramCache]: Analyzing trace with hash 419958136, now seen corresponding path program 3 times [2020-07-20 14:18:10,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:10,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951799596] [2020-07-20 14:18:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:18,202 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:18:18,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:18,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 14:18:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1019 proven. 297 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-20 14:18:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:18:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1007 proven. 297 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2020-07-20 14:18:18,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951799596] [2020-07-20 14:18:18,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:18:18,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-20 14:18:18,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318329061] [2020-07-20 14:18:18,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 14:18:18,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 14:18:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-20 14:18:18,444 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand 11 states. [2020-07-20 14:18:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:18,704 INFO L93 Difference]: Finished difference Result 303 states and 358 transitions. [2020-07-20 14:18:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 14:18:18,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-07-20 14:18:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:18,710 INFO L225 Difference]: With dead ends: 303 [2020-07-20 14:18:18,710 INFO L226 Difference]: Without dead ends: 211 [2020-07-20 14:18:18,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-07-20 14:18:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-20 14:18:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 163. [2020-07-20 14:18:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-07-20 14:18:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-07-20 14:18:18,751 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 168 [2020-07-20 14:18:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:18,756 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-07-20 14:18:18,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 14:18:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-07-20 14:18:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 14:18:18,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:18,779 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:18,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:18,981 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1916434374, now seen corresponding path program 4 times [2020-07-20 14:18:18,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:18,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91057545] [2020-07-20 14:18:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:02,832 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:02,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:03,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-20 14:19:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 838 proven. 768 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-07-20 14:19:03,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:19:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 828 proven. 768 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-07-20 14:19:03,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91057545] [2020-07-20 14:19:03,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:19:03,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2020-07-20 14:19:03,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46046547] [2020-07-20 14:19:03,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 14:19:03,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 14:19:03,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-20 14:19:03,260 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 14 states. [2020-07-20 14:19:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:03,771 INFO L93 Difference]: Finished difference Result 268 states and 312 transitions. [2020-07-20 14:19:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 14:19:03,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 168 [2020-07-20 14:19:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:03,775 INFO L225 Difference]: With dead ends: 268 [2020-07-20 14:19:03,776 INFO L226 Difference]: Without dead ends: 205 [2020-07-20 14:19:03,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-07-20 14:19:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-20 14:19:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2020-07-20 14:19:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-07-20 14:19:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-07-20 14:19:03,790 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 168 [2020-07-20 14:19:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:03,791 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-07-20 14:19:03,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 14:19:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-07-20 14:19:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 14:19:03,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:03,795 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:19:04,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:04,011 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1900915656, now seen corresponding path program 5 times [2020-07-20 14:19:04,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:04,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090729912] [2020-07-20 14:19:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:02,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:20:02,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 14:20:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 219 proven. 1454 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-07-20 14:20:02,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:20:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 219 proven. 1454 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-07-20 14:20:02,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090729912] [2020-07-20 14:20:02,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:20:02,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2020-07-20 14:20:02,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857944934] [2020-07-20 14:20:02,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 14:20:02,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:02,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 14:20:02,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-07-20 14:20:02,586 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 17 states. [2020-07-20 14:20:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:03,293 INFO L93 Difference]: Finished difference Result 271 states and 313 transitions. [2020-07-20 14:20:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 14:20:03,294 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-07-20 14:20:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:03,298 INFO L225 Difference]: With dead ends: 271 [2020-07-20 14:20:03,299 INFO L226 Difference]: Without dead ends: 236 [2020-07-20 14:20:03,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-07-20 14:20:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-07-20 14:20:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 184. [2020-07-20 14:20:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-20 14:20:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 211 transitions. [2020-07-20 14:20:03,316 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 211 transitions. Word has length 168 [2020-07-20 14:20:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:03,316 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 211 transitions. [2020-07-20 14:20:03,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 14:20:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 211 transitions. [2020-07-20 14:20:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 14:20:03,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:20:03,320 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:20:03,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:03,534 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:20:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:20:03,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2135886202, now seen corresponding path program 6 times [2020-07-20 14:20:03,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:20:03,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787620507] [2020-07-20 14:20:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:21,500 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:20:21,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:21,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:20:21,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:21,620 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:20:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 8 proven. 239 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2020-07-20 14:20:21,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:20:21,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:20:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 8 proven. 239 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2020-07-20 14:20:21,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787620507] [2020-07-20 14:20:21,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:20:21,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 14:20:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106611328] [2020-07-20 14:20:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 14:20:21,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 14:20:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-20 14:20:21,798 INFO L87 Difference]: Start difference. First operand 184 states and 211 transitions. Second operand 10 states. [2020-07-20 14:20:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:21,921 INFO L93 Difference]: Finished difference Result 184 states and 211 transitions. [2020-07-20 14:20:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:20:21,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-07-20 14:20:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:21,929 INFO L225 Difference]: With dead ends: 184 [2020-07-20 14:20:21,929 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:20:21,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-07-20 14:20:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:20:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:20:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:20:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:20:21,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 168 [2020-07-20 14:20:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:21,936 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:20:21,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 14:20:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:20:21,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:20:22,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:22,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:20:22,496 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 15 [2020-07-20 14:20:22,642 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-07-20 14:20:22,642 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-07-20 14:20:22,643 INFO L268 CegarLoopResult]: For program point L127-2(lines 127 133) no Hoare annotation was computed. [2020-07-20 14:20:22,643 INFO L271 CegarLoopResult]: At program point L127-3(lines 127 133) the Hoare annotation is: true [2020-07-20 14:20:22,643 INFO L268 CegarLoopResult]: For program point L119-2(lines 119 126) no Hoare annotation was computed. [2020-07-20 14:20:22,643 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-07-20 14:20:22,643 INFO L268 CegarLoopResult]: For program point L119-4(lines 119 126) no Hoare annotation was computed. [2020-07-20 14:20:22,643 INFO L268 CegarLoopResult]: For program point L144-2(lines 144 150) no Hoare annotation was computed. [2020-07-20 14:20:22,643 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-07-20 14:20:22,643 INFO L268 CegarLoopResult]: For program point L144-4(lines 144 150) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point L136-2(lines 136 142) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L271 CegarLoopResult]: At program point L136-3(lines 136 142) the Hoare annotation is: true [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point L136-4(lines 136 142) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point ludcmpEXIT(lines 109 153) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L271 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: true [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point ludcmpFINAL(lines 109 153) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point L130-2(lines 130 131) no Hoare annotation was computed. [2020-07-20 14:20:22,644 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-07-20 14:20:22,644 INFO L268 CegarLoopResult]: For program point L130-4(lines 130 131) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 124) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L147-2(lines 147 148) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L147-4(lines 147 148) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L139-2(lines 139 140) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L139-4(lines 139 140) no Hoare annotation was computed. [2020-07-20 14:20:22,645 INFO L268 CegarLoopResult]: For program point L123-2(lines 123 124) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point L116-2(lines 116 134) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point L116-4(lines 116 134) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-07-20 14:20:22,646 INFO L268 CegarLoopResult]: For program point L78-2(lines 78 79) no Hoare annotation was computed. [2020-07-20 14:20:22,647 INFO L268 CegarLoopResult]: For program point fabsEXIT(lines 74 81) no Hoare annotation was computed. [2020-07-20 14:20:22,647 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-07-20 14:20:22,647 INFO L268 CegarLoopResult]: For program point fabsFINAL(lines 74 81) no Hoare annotation was computed. [2020-07-20 14:20:22,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:22,647 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:20:22,648 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:20:22,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:20:22,648 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:20:22,648 INFO L268 CegarLoopResult]: For program point L97-2(line 97) no Hoare annotation was computed. [2020-07-20 14:20:22,648 INFO L268 CegarLoopResult]: For program point L91-2(lines 91 102) no Hoare annotation was computed. [2020-07-20 14:20:22,648 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 83 107) no Hoare annotation was computed. [2020-07-20 14:20:22,649 INFO L264 CegarLoopResult]: At program point L91-3(lines 91 102) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 5)) (.cse1 (<= 5 main_~n~0))) (or (and .cse0 .cse1 (= 0 main_~i~0)) (and .cse0 .cse1 (< main_~i~0 50) (< main_~j~0 50)))) [2020-07-20 14:20:22,649 INFO L271 CegarLoopResult]: At program point L91-4(lines 91 102) the Hoare annotation is: true [2020-07-20 14:20:22,649 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 83 107) no Hoare annotation was computed. [2020-07-20 14:20:22,649 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-07-20 14:20:22,649 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:20:22,649 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: true [2020-07-20 14:20:22,649 INFO L268 CegarLoopResult]: For program point L94-2(lines 94 99) no Hoare annotation was computed. [2020-07-20 14:20:22,650 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0) (<= main_~i~0 5) (< main_~j~0 50)) [2020-07-20 14:20:22,650 INFO L264 CegarLoopResult]: At program point L94-4(lines 94 99) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0) (<= main_~i~0 5) (< main_~j~0 50)) [2020-07-20 14:20:22,650 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 14:20:22,650 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 14:20:22,650 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 14:20:22,650 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 14:20:22,651 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 14:20:22,651 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 14:20:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:20:22 BoogieIcfgContainer [2020-07-20 14:20:22,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:20:22,679 INFO L168 Benchmark]: Toolchain (without parser) took 139598.17 ms. Allocated memory was 145.2 MB in the beginning and 297.3 MB in the end (delta: 152.0 MB). Free memory was 101.3 MB in the beginning and 157.4 MB in the end (delta: -56.1 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,680 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.93 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 179.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,682 INFO L168 Benchmark]: Boogie Preprocessor took 73.98 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,683 INFO L168 Benchmark]: RCFGBuilder took 720.00 ms. Allocated memory is still 202.9 MB. Free memory was 177.2 MB in the beginning and 150.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,684 INFO L168 Benchmark]: TraceAbstraction took 138245.63 ms. Allocated memory was 202.9 MB in the beginning and 297.3 MB in the end (delta: 94.4 MB). Free memory was 149.3 MB in the beginning and 157.4 MB in the end (delta: -8.1 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:22,687 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 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 549.93 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 179.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.98 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 720.00 ms. Allocated memory is still 202.9 MB. Free memory was 177.2 MB in the beginning and 150.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 138245.63 ms. Allocated memory was 202.9 MB in the beginning and 297.3 MB in the end (delta: 94.4 MB). Free memory was 149.3 MB in the beginning and 157.4 MB in the end (delta: -8.1 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: ((n <= 5 && 5 <= n) && i <= 5) && j < 50 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: ((n <= 5 && 5 <= n) && 0 == i) || (((n <= 5 && 5 <= n) && i < 50) && j < 50) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 137.6s, OverallIterations: 12, TraceHistogramMax: 30, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 296 SDslu, 1013 SDs, 0 SdLazy, 1738 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1814 GetRequests, 1699 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 225 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 49 PreInvPairs, 111 NumberOfFragments, 68 HoareAnnotationTreeSize, 49 FomulaSimplifications, 2355 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 21 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 129.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 942 NumberOfCodeBlocks, 721 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1776 ConstructedInterpolants, 0 QuantifiedInterpolants, 622388 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2097 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 11062/17036 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...