java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:34:43,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:34:43,490 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:34:43,509 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:34:43,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:34:43,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:34:43,512 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:34:43,514 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:34:43,516 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:34:43,517 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:34:43,517 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:34:43,518 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:34:43,519 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:34:43,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:34:43,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:34:43,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:34:43,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:34:43,524 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:34:43,526 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:34:43,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:34:43,529 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:34:43,531 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:34:43,533 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:34:43,539 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:34:43,539 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:34:43,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:34:43,541 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:34:43,542 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:34:43,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:34:43,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:34:43,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:34:43,566 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:34:43,566 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:34:43,567 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:34:43,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:34:43,567 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:34:43,567 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:34:43,567 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:34:43,567 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:34:43,568 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:34:43,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:34:43,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:34:43,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:34:43,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:34:43,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:34:43,570 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:34:43,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:34:43,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:34:43,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:34:43,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:34:43,572 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:34:43,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:34:43,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:34:43,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:34:43,573 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:34:43,573 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:34:43,573 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:34:43,573 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:34:43,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:34:43,574 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:34:43,574 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:34:43,574 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:34:43,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:34:43,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:34:43,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:34:43,666 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:34:43,666 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:34:43,667 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label47_true-unreach-call.c [2018-09-18 11:34:44,027 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8011f4ea/e528adc2c0b24559801c9a4c36284a94/FLAG338ef5adc [2018-09-18 11:34:44,509 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:34:44,510 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label47_true-unreach-call.c [2018-09-18 11:34:44,548 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8011f4ea/e528adc2c0b24559801c9a4c36284a94/FLAG338ef5adc [2018-09-18 11:34:44,571 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8011f4ea/e528adc2c0b24559801c9a4c36284a94 [2018-09-18 11:34:44,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:34:44,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:34:44,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:34:44,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:34:44,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:34:44,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:34:44" (1/1) ... [2018-09-18 11:34:44,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:44, skipping insertion in model container [2018-09-18 11:34:44,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:34:44" (1/1) ... [2018-09-18 11:34:44,618 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:34:45,972 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:34:45,994 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:34:46,662 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:34:46,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46 WrapperNode [2018-09-18 11:34:46,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:34:46,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:34:46,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:34:46,939 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:34:46,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:34:47,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:34:47,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:34:47,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:34:47,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:47,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:48,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:48,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (1/1) ... [2018-09-18 11:34:48,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:34:48,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:34:48,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:34:48,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:34:48,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (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 [2018-09-18 11:34:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:34:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:34:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:34:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:34:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:34:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:34:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:34:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:34:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:34:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:34:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:34:48,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:34:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:34:48,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:34:59,203 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:34:59,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:34:59 BoogieIcfgContainer [2018-09-18 11:34:59,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:34:59,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:34:59,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:34:59,208 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:34:59,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:34:44" (1/3) ... [2018-09-18 11:34:59,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49257913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:34:59, skipping insertion in model container [2018-09-18 11:34:59,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:34:46" (2/3) ... [2018-09-18 11:34:59,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49257913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:34:59, skipping insertion in model container [2018-09-18 11:34:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:34:59" (3/3) ... [2018-09-18 11:34:59,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label47_true-unreach-call.c [2018-09-18 11:34:59,222 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:34:59,233 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:34:59,292 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:34:59,293 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:34:59,293 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:34:59,293 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:34:59,293 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:34:59,294 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:34:59,294 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:34:59,294 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:34:59,294 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:34:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:34:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-18 11:34:59,504 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:34:59,505 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:34:59,506 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:34:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash 986841587, now seen corresponding path program 1 times [2018-09-18 11:34:59,520 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:34:59,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:59,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:59,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:59,583 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:34:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:00,044 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:00,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:35:00,044 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:00,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:35:00,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:35:00,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:00,071 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:35:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:07,954 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:35:07,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:35:07,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-09-18 11:35:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:08,005 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:35:08,006 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:35:08,020 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:35:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:35:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:35:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:35:08,204 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 45 [2018-09-18 11:35:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:08,205 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:35:08,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:35:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:35:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-18 11:35:08,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:08,219 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:08,219 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1872718060, now seen corresponding path program 1 times [2018-09-18 11:35:08,219 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:08,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:08,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:08,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:08,222 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:08,619 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:08,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:35:08,620 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:08,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:35:08,622 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:35:08,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:35:08,623 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:35:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:18,607 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:35:18,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:18,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-09-18 11:35:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:18,636 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:35:18,637 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:35:18,642 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:35:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:35:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:35:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:35:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:35:18,740 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 119 [2018-09-18 11:35:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:18,740 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:35:18,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:35:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:35:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-18 11:35:18,744 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:18,745 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:18,745 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 715820005, now seen corresponding path program 1 times [2018-09-18 11:35:18,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:18,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:18,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:18,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:18,747 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:18,970 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:19,031 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:19,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:19,031 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:19,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:19,032 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:19,032 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:19,032 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:35:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:31,381 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:35:31,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:31,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-18 11:35:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:31,438 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:35:31,438 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:35:31,456 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:35:31,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:35:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:35:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:35:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:35:31,703 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 124 [2018-09-18 11:35:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:31,704 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:35:31,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:35:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:35:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 11:35:31,711 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:31,711 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:31,711 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:31,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1322155659, now seen corresponding path program 1 times [2018-09-18 11:35:31,712 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:31,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:31,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:31,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:31,715 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:32,002 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:32,251 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:32,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:32,251 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:32,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:32,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:32,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:32,252 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:35:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:42,472 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-18 11:35:42,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:42,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-18 11:35:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:42,552 INFO L225 Difference]: With dead ends: 22224 [2018-09-18 11:35:42,553 INFO L226 Difference]: Without dead ends: 14306 [2018-09-18 11:35:42,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:35:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-18 11:35:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-18 11:35:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-18 11:35:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-18 11:35:42,933 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 132 [2018-09-18 11:35:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:42,936 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-18 11:35:42,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:35:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-18 11:35:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-18 11:35:42,940 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:42,943 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:42,944 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash 822542856, now seen corresponding path program 1 times [2018-09-18 11:35:42,944 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:42,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:42,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:42,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:42,946 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:43,223 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:43,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:35:43,223 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:43,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:35:43,224 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:35:43,224 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:35:43,224 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-18 11:36:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:06,127 INFO L93 Difference]: Finished difference Result 56457 states and 95976 transitions. [2018-09-18 11:36:06,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:36:06,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-18 11:36:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:06,358 INFO L225 Difference]: With dead ends: 56457 [2018-09-18 11:36:06,358 INFO L226 Difference]: Without dead ends: 42244 [2018-09-18 11:36:06,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42244 states. [2018-09-18 11:36:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42244 to 42002. [2018-09-18 11:36:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42002 states. [2018-09-18 11:36:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42002 states to 42002 states and 62979 transitions. [2018-09-18 11:36:07,547 INFO L78 Accepts]: Start accepts. Automaton has 42002 states and 62979 transitions. Word has length 149 [2018-09-18 11:36:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:07,548 INFO L480 AbstractCegarLoop]: Abstraction has 42002 states and 62979 transitions. [2018-09-18 11:36:07,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 42002 states and 62979 transitions. [2018-09-18 11:36:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-18 11:36:07,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:07,555 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:07,556 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash -891765791, now seen corresponding path program 1 times [2018-09-18 11:36:07,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:07,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:07,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:07,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:07,557 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:07,853 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:08,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:08,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:08,269 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:08,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:08,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:08,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:08,270 INFO L87 Difference]: Start difference. First operand 42002 states and 62979 transitions. Second operand 6 states. [2018-09-18 11:36:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:21,619 INFO L93 Difference]: Finished difference Result 104617 states and 165909 transitions. [2018-09-18 11:36:21,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:21,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-09-18 11:36:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:21,862 INFO L225 Difference]: With dead ends: 104617 [2018-09-18 11:36:21,862 INFO L226 Difference]: Without dead ends: 62621 [2018-09-18 11:36:22,427 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62621 states. [2018-09-18 11:36:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62621 to 62371. [2018-09-18 11:36:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62371 states. [2018-09-18 11:36:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62371 states to 62371 states and 87788 transitions. [2018-09-18 11:36:23,800 INFO L78 Accepts]: Start accepts. Automaton has 62371 states and 87788 transitions. Word has length 170 [2018-09-18 11:36:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:23,801 INFO L480 AbstractCegarLoop]: Abstraction has 62371 states and 87788 transitions. [2018-09-18 11:36:23,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 62371 states and 87788 transitions. [2018-09-18 11:36:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-18 11:36:23,814 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:23,814 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:23,816 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash -707609888, now seen corresponding path program 1 times [2018-09-18 11:36:23,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:23,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:23,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:23,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:23,818 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 76 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:24,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:24,198 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:36:24,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:24,210 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:24,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-18 11:36:24,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 76 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:36:24,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:36:24,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 11:36:24,957 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:24,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:36:24,958 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:36:24,958 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:24,958 INFO L87 Difference]: Start difference. First operand 62371 states and 87788 transitions. Second operand 5 states. [2018-09-18 11:36:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:37,774 INFO L93 Difference]: Finished difference Result 181153 states and 270837 transitions. [2018-09-18 11:36:37,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:36:37,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-09-18 11:36:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:38,532 INFO L225 Difference]: With dead ends: 181153 [2018-09-18 11:36:38,532 INFO L226 Difference]: Without dead ends: 118788 [2018-09-18 11:36:38,740 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:36:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118788 states. [2018-09-18 11:36:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118788 to 116023. [2018-09-18 11:36:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116023 states. [2018-09-18 11:36:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116023 states to 116023 states and 160991 transitions. [2018-09-18 11:36:42,427 INFO L78 Accepts]: Start accepts. Automaton has 116023 states and 160991 transitions. Word has length 204 [2018-09-18 11:36:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:42,428 INFO L480 AbstractCegarLoop]: Abstraction has 116023 states and 160991 transitions. [2018-09-18 11:36:42,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:36:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 116023 states and 160991 transitions. [2018-09-18 11:36:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-18 11:36:42,436 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:42,436 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:42,437 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash 296788196, now seen corresponding path program 1 times [2018-09-18 11:36:42,437 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:42,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:42,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:42,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:42,438 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:42,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:42,972 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:36:42,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:42,989 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:43,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:43,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:43,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:36:43,716 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:36:43,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:43,733 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:36:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:43,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:36:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:44,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:36:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:44,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:36:44,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:36:44,333 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:36:44,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:36:44,335 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:36:44,335 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:36:44,336 INFO L87 Difference]: Start difference. First operand 116023 states and 160991 transitions. Second operand 9 states. [2018-09-18 11:37:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:04,748 INFO L93 Difference]: Finished difference Result 265820 states and 448283 transitions. [2018-09-18 11:37:04,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:37:04,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2018-09-18 11:37:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:05,679 INFO L225 Difference]: With dead ends: 265820 [2018-09-18 11:37:05,679 INFO L226 Difference]: Without dead ends: 127433 [2018-09-18 11:37:06,014 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 984 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:37:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127433 states. [2018-09-18 11:37:10,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127433 to 125303. [2018-09-18 11:37:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125303 states. [2018-09-18 11:37:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125303 states to 125303 states and 189854 transitions. [2018-09-18 11:37:11,311 INFO L78 Accepts]: Start accepts. Automaton has 125303 states and 189854 transitions. Word has length 246 [2018-09-18 11:37:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:11,311 INFO L480 AbstractCegarLoop]: Abstraction has 125303 states and 189854 transitions. [2018-09-18 11:37:11,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:37:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 125303 states and 189854 transitions. [2018-09-18 11:37:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-18 11:37:11,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:11,323 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:11,323 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:11,323 INFO L82 PathProgramCache]: Analyzing trace with hash 267517201, now seen corresponding path program 1 times [2018-09-18 11:37:11,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:11,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:11,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:11,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:11,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:11,696 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:37:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 70 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:11,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:11,806 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:37:11,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:11,815 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:11,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:37:11,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:37:12,165 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:37:12,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-18 11:37:12,166 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:12,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:37:12,167 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:37:12,167 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:37:12,167 INFO L87 Difference]: Start difference. First operand 125303 states and 189854 transitions. Second operand 3 states. [2018-09-18 11:37:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:21,110 INFO L93 Difference]: Finished difference Result 250525 states and 386541 transitions. [2018-09-18 11:37:21,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:37:21,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-09-18 11:37:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:21,755 INFO L225 Difference]: With dead ends: 250525 [2018-09-18 11:37:21,756 INFO L226 Difference]: Without dead ends: 125233 [2018-09-18 11:37:22,147 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 591 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:37:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125233 states. [2018-09-18 11:37:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125233 to 123755. [2018-09-18 11:37:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123755 states. [2018-09-18 11:37:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123755 states to 123755 states and 177403 transitions. [2018-09-18 11:37:30,181 INFO L78 Accepts]: Start accepts. Automaton has 123755 states and 177403 transitions. Word has length 295 [2018-09-18 11:37:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:30,181 INFO L480 AbstractCegarLoop]: Abstraction has 123755 states and 177403 transitions. [2018-09-18 11:37:30,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:37:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 123755 states and 177403 transitions. [2018-09-18 11:37:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-18 11:37:30,203 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:30,203 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:30,203 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:30,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1029300862, now seen corresponding path program 1 times [2018-09-18 11:37:30,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:30,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:30,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:30,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:30,205 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 11:37:30,536 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:37:30,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:37:30,536 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:30,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:37:30,537 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:37:30,537 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:37:30,538 INFO L87 Difference]: Start difference. First operand 123755 states and 177403 transitions. Second operand 4 states. [2018-09-18 11:37:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:41,898 INFO L93 Difference]: Finished difference Result 294182 states and 444609 transitions. [2018-09-18 11:37:41,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:37:41,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-09-18 11:37:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:42,658 INFO L225 Difference]: With dead ends: 294182 [2018-09-18 11:37:42,659 INFO L226 Difference]: Without dead ends: 170433 [2018-09-18 11:37:43,803 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:37:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170433 states. [2018-09-18 11:37:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170433 to 168129. [2018-09-18 11:37:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168129 states. [2018-09-18 11:37:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168129 states to 168129 states and 246661 transitions. [2018-09-18 11:37:47,330 INFO L78 Accepts]: Start accepts. Automaton has 168129 states and 246661 transitions. Word has length 341 [2018-09-18 11:37:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:47,331 INFO L480 AbstractCegarLoop]: Abstraction has 168129 states and 246661 transitions. [2018-09-18 11:37:47,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:37:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 168129 states and 246661 transitions. [2018-09-18 11:37:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-18 11:37:47,350 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:47,350 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:47,350 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1366486417, now seen corresponding path program 1 times [2018-09-18 11:37:47,351 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:47,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:47,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:47,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:47,352 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 120 proven. 143 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:37:47,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:47,646 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:37:47,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:47,653 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:47,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-18 11:37:47,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 196 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-18 11:37:48,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:48,115 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:37:48,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:48,131 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:48,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-18 11:37:48,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 122 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:37:48,721 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:37:48,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 11:37:48,722 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:48,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:37:48,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:37:48,723 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:37:48,723 INFO L87 Difference]: Start difference. First operand 168129 states and 246661 transitions. Second operand 5 states. [2018-09-18 11:37:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:59,375 INFO L93 Difference]: Finished difference Result 345083 states and 535032 transitions. [2018-09-18 11:37:59,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:37:59,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2018-09-18 11:37:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:59,944 INFO L225 Difference]: With dead ends: 345083 [2018-09-18 11:37:59,945 INFO L226 Difference]: Without dead ends: 176980 [2018-09-18 11:38:00,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1376 GetRequests, 1355 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:38:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176980 states. [2018-09-18 11:38:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176980 to 176800. [2018-09-18 11:38:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176800 states. [2018-09-18 11:38:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176800 states to 176800 states and 246282 transitions. [2018-09-18 11:38:03,975 INFO L78 Accepts]: Start accepts. Automaton has 176800 states and 246282 transitions. Word has length 342 [2018-09-18 11:38:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:03,976 INFO L480 AbstractCegarLoop]: Abstraction has 176800 states and 246282 transitions. [2018-09-18 11:38:03,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:38:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 176800 states and 246282 transitions. [2018-09-18 11:38:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-09-18 11:38:03,994 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:03,995 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:03,995 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 53347175, now seen corresponding path program 1 times [2018-09-18 11:38:03,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:03,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:03,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:03,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:03,996 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:04,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:04,698 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:38:04,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:04,718 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:04,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:05,077 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:05,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:05,347 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:38:05,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:05,363 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:05,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:06,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:06,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:38:06,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:38:06,640 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:38:06,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:38:06,642 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:38:06,642 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:38:06,642 INFO L87 Difference]: Start difference. First operand 176800 states and 246282 transitions. Second operand 9 states. [2018-09-18 11:38:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:21,504 INFO L93 Difference]: Finished difference Result 397217 states and 628912 transitions. [2018-09-18 11:38:21,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:38:21,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2018-09-18 11:38:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:23,259 INFO L225 Difference]: With dead ends: 397217 [2018-09-18 11:38:23,259 INFO L226 Difference]: Without dead ends: 221191 [2018-09-18 11:38:23,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1533 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:38:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221191 states. Received shutdown request... [2018-09-18 11:38:31,548 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:38:31,553 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:38:31,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:38:31 BoogieIcfgContainer [2018-09-18 11:38:31,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:38:31,554 INFO L168 Benchmark]: Toolchain (without parser) took 226970.48 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 4.7 GB in the end (delta: -3.3 GB). Peak memory consumption was 4.7 GB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,555 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:38:31,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2347.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 846.43 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 915.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,558 INFO L168 Benchmark]: Boogie Preprocessor took 348.61 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,559 INFO L168 Benchmark]: RCFGBuilder took 11070.28 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.0 MB). Peak memory consumption was 659.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,561 INFO L168 Benchmark]: TraceAbstraction took 212348.81 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.6 GB in the beginning and 4.7 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:38:31,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2347.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 846.43 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 915.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 348.61 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11070.28 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.0 MB). Peak memory consumption was 659.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212348.81 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.6 GB in the beginning and 4.7 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 165.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3206 SDtfs, 37592 SDslu, 2124 SDs, 0 SdLazy, 71745 SolverSat, 15246 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 114.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5015 GetRequests, 4884 SyntacticMatches, 27 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176800occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 35.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 9514 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 4997 NumberOfCodeBlocks, 4997 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7414 ConstructedInterpolants, 0 QuantifiedInterpolants, 6629530 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4220 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 4471/5099 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-38-31-587.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-38-31-587.csv Completed graceful shutdown