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/Problem19_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:18:41,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:18:41,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:18:41,527 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:18:41,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:18:41,528 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:18:41,532 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:18:41,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:18:41,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:18:41,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:18:41,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:18:41,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:18:41,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:18:41,544 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:18:41,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:18:41,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:18:41,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:18:41,561 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:18:41,563 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:18:41,564 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:18:41,568 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:18:41,569 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:18:41,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:18:41,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:18:41,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:18:41,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:18:41,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:18:41,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:18:41,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:18:41,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:18:41,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:18:41,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:18:41,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:18:41,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:18:41,583 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:18:41,584 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:18:41,584 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 [2018-09-14 18:18:41,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:18:41,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:18:41,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:18:41,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:18:41,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:18:41,612 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:18:41,612 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:18:41,612 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:18:41,612 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:18:41,612 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:18:41,613 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:18:41,614 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:18:41,614 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:18:41,615 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:18:41,615 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:18:41,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:18:41,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:18:41,616 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:18:41,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:18:41,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:18:41,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:18:41,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:18:41,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:18:41,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:18:41,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:18:41,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:18:41,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:18:41,619 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:18:41,619 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:18:41,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:18:41,619 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:18:41,620 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:18:41,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:18:41,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:18:41,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:18:41,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:18:41,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:18:41,709 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:18:41,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-09-14 18:18:42,082 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7440f5dce/58b6a60ca4b54f3d867b35ab7fe2b775/FLAGba940ad27 [2018-09-14 18:18:42,720 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:18:42,721 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-09-14 18:18:42,779 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7440f5dce/58b6a60ca4b54f3d867b35ab7fe2b775/FLAGba940ad27 [2018-09-14 18:18:42,795 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7440f5dce/58b6a60ca4b54f3d867b35ab7fe2b775 [2018-09-14 18:18:42,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:18:42,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:18:42,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:18:42,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:18:42,819 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:18:42,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:18:42" (1/1) ... [2018-09-14 18:18:42,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:42, skipping insertion in model container [2018-09-14 18:18:42,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:18:42" (1/1) ... [2018-09-14 18:18:42,836 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:18:44,950 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:18:44,977 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:18:45,956 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:18:46,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46 WrapperNode [2018-09-14 18:18:46,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:18:46,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:18:46,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:18:46,585 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:18:46,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:46,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:46,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:18:46,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:18:46,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:18:46,942 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:18:48,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (1/1) ... [2018-09-14 18:18:48,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:18:48,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:18:48,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:18:48,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:18:48,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (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 [2018-09-14 18:18:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:18:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:18:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:18:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:18:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:18:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:18:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:18:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:18:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:18:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:18:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:18:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:18:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:18:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:18:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:18:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:18:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:18:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:19:06,526 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:19:06,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:19:06 BoogieIcfgContainer [2018-09-14 18:19:06,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:19:06,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:19:06,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:19:06,531 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:19:06,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:18:42" (1/3) ... [2018-09-14 18:19:06,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5caba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:19:06, skipping insertion in model container [2018-09-14 18:19:06,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:46" (2/3) ... [2018-09-14 18:19:06,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5caba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:19:06, skipping insertion in model container [2018-09-14 18:19:06,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:19:06" (3/3) ... [2018-09-14 18:19:06,535 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label05_true-unreach-call.c [2018-09-14 18:19:06,545 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:19:06,557 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:19:06,630 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:19:06,631 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:19:06,631 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:19:06,631 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:19:06,631 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:19:06,632 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:19:06,632 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:19:06,632 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:19:06,632 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:19:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:19:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-14 18:19:06,699 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:06,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:19:06,701 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:06,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1860482762, now seen corresponding path program 1 times [2018-09-14 18:19:06,710 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:06,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:06,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:06,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:06,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:07,239 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:19:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:19:07,385 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:19:07,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:19:07,385 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:07,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:19:07,408 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:19:07,409 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:19:07,412 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-14 18:19:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:19:22,480 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-09-14 18:19:22,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:19:22,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-09-14 18:19:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:19:22,538 INFO L225 Difference]: With dead ends: 4995 [2018-09-14 18:19:22,538 INFO L226 Difference]: Without dead ends: 3215 [2018-09-14 18:19:22,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:19:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-09-14 18:19:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-09-14 18:19:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-09-14 18:19:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-09-14 18:19:22,786 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 67 [2018-09-14 18:19:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:19:22,787 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-09-14 18:19:22,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:19:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-09-14 18:19:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-14 18:19:22,800 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:22,801 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, 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] [2018-09-14 18:19:22,801 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1310005478, now seen corresponding path program 1 times [2018-09-14 18:19:22,802 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:22,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:22,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:22,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:22,803 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:19:23,225 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:19:23,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:19:23,225 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:23,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:19:23,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:19:23,229 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:19:23,229 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-09-14 18:20:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:20:09,720 INFO L93 Difference]: Finished difference Result 12253 states and 22711 transitions. [2018-09-14 18:20:09,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:20:09,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-09-14 18:20:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:20:09,775 INFO L225 Difference]: With dead ends: 12253 [2018-09-14 18:20:09,775 INFO L226 Difference]: Without dead ends: 9046 [2018-09-14 18:20:09,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:20:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2018-09-14 18:20:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 8968. [2018-09-14 18:20:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2018-09-14 18:20:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 13250 transitions. [2018-09-14 18:20:10,090 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 13250 transitions. Word has length 141 [2018-09-14 18:20:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:20:10,090 INFO L480 AbstractCegarLoop]: Abstraction has 8968 states and 13250 transitions. [2018-09-14 18:20:10,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:20:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 13250 transitions. [2018-09-14 18:20:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-14 18:20:10,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:10,097 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, 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] [2018-09-14 18:20:10,097 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1307216630, now seen corresponding path program 1 times [2018-09-14 18:20:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:10,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:10,099 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:20:10,476 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:20:10,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:20:10,477 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:20:10,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:20:10,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:20:10,478 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:20:10,478 INFO L87 Difference]: Start difference. First operand 8968 states and 13250 transitions. Second operand 6 states. [2018-09-14 18:20:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:20:34,604 INFO L93 Difference]: Finished difference Result 27224 states and 40767 transitions. [2018-09-14 18:20:34,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:20:34,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-14 18:20:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:20:34,694 INFO L225 Difference]: With dead ends: 27224 [2018-09-14 18:20:34,694 INFO L226 Difference]: Without dead ends: 18262 [2018-09-14 18:20:34,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:20:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18262 states. [2018-09-14 18:20:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18262 to 17994. [2018-09-14 18:20:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17994 states. [2018-09-14 18:20:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 26032 transitions. [2018-09-14 18:20:35,159 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 26032 transitions. Word has length 149 [2018-09-14 18:20:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:20:35,160 INFO L480 AbstractCegarLoop]: Abstraction has 17994 states and 26032 transitions. [2018-09-14 18:20:35,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:20:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 26032 transitions. [2018-09-14 18:20:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-14 18:20:35,166 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:35,167 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, 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] [2018-09-14 18:20:35,167 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash 899038028, now seen corresponding path program 1 times [2018-09-14 18:20:35,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:35,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:35,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:35,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:35,169 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:20:35,500 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:20:35,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:20:35,501 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:20:35,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:20:35,502 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:20:35,502 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:20:35,502 INFO L87 Difference]: Start difference. First operand 17994 states and 26032 transitions. Second operand 5 states. [2018-09-14 18:21:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:07,119 INFO L93 Difference]: Finished difference Result 55362 states and 81814 transitions. [2018-09-14 18:21:07,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:21:07,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-09-14 18:21:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:07,245 INFO L225 Difference]: With dead ends: 55362 [2018-09-14 18:21:07,246 INFO L226 Difference]: Without dead ends: 37374 [2018-09-14 18:21:07,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:21:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37374 states. [2018-09-14 18:21:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37374 to 36464. [2018-09-14 18:21:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36464 states. [2018-09-14 18:21:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36464 states to 36464 states and 48119 transitions. [2018-09-14 18:21:08,104 INFO L78 Accepts]: Start accepts. Automaton has 36464 states and 48119 transitions. Word has length 169 [2018-09-14 18:21:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:08,105 INFO L480 AbstractCegarLoop]: Abstraction has 36464 states and 48119 transitions. [2018-09-14 18:21:08,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:21:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 36464 states and 48119 transitions. [2018-09-14 18:21:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 18:21:08,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:08,113 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:21:08,113 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1152657023, now seen corresponding path program 1 times [2018-09-14 18:21:08,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:08,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:08,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:08,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:08,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:08,488 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:21:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:21:08,983 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:21:08,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:21:08,983 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:21:08,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:21:08,984 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:21:08,985 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:21:08,985 INFO L87 Difference]: Start difference. First operand 36464 states and 48119 transitions. Second operand 6 states. [2018-09-14 18:21:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:28,290 INFO L93 Difference]: Finished difference Result 86779 states and 118106 transitions. [2018-09-14 18:21:28,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:21:28,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-09-14 18:21:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:28,466 INFO L225 Difference]: With dead ends: 86779 [2018-09-14 18:21:28,466 INFO L226 Difference]: Without dead ends: 50321 [2018-09-14 18:21:28,537 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 [2018-09-14 18:21:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50321 states. [2018-09-14 18:21:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 49335. [2018-09-14 18:21:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49335 states. [2018-09-14 18:21:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49335 states to 49335 states and 64002 transitions. [2018-09-14 18:21:29,457 INFO L78 Accepts]: Start accepts. Automaton has 49335 states and 64002 transitions. Word has length 232 [2018-09-14 18:21:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:29,458 INFO L480 AbstractCegarLoop]: Abstraction has 49335 states and 64002 transitions. [2018-09-14 18:21:29,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:21:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 49335 states and 64002 transitions. [2018-09-14 18:21:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2018-09-14 18:21:29,502 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:29,503 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:21:29,504 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1562813376, now seen corresponding path program 1 times [2018-09-14 18:21:29,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:29,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:29,506 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 395 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 18:21:31,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:31,004 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 [2018-09-14 18:21:31,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:31,013 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:31,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:21:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-09-14 18:21:32,230 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 395 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 18:21:33,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:33,263 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:21:33,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:33,280 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:33,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:21:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-09-14 18:21:35,430 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 395 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 18:21:36,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:21:36,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 17 [2018-09-14 18:21:36,014 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:21:36,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 18:21:36,016 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 18:21:36,017 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:21:36,017 INFO L87 Difference]: Start difference. First operand 49335 states and 64002 transitions. Second operand 10 states. [2018-09-14 18:22:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:22:26,019 INFO L93 Difference]: Finished difference Result 221827 states and 358043 transitions. [2018-09-14 18:22:26,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 18:22:26,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 953 [2018-09-14 18:22:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:22:27,138 INFO L225 Difference]: With dead ends: 221827 [2018-09-14 18:22:27,138 INFO L226 Difference]: Without dead ends: 172498 [2018-09-14 18:22:28,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3837 GetRequests, 3810 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2018-09-14 18:22:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172498 states. [2018-09-14 18:22:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172498 to 169744. [2018-09-14 18:22:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169744 states. [2018-09-14 18:22:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169744 states to 169744 states and 228565 transitions. [2018-09-14 18:22:31,939 INFO L78 Accepts]: Start accepts. Automaton has 169744 states and 228565 transitions. Word has length 953 [2018-09-14 18:22:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:22:31,940 INFO L480 AbstractCegarLoop]: Abstraction has 169744 states and 228565 transitions. [2018-09-14 18:22:31,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 18:22:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 169744 states and 228565 transitions. [2018-09-14 18:22:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-09-14 18:22:32,019 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:22:32,020 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:22:32,020 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:22:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash 451501754, now seen corresponding path program 1 times [2018-09-14 18:22:32,021 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:22:32,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:32,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:32,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:32,022 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:22:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:22:33,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:22:33,920 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:22:33,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:33,928 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:22:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:34,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:22:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:22:35,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:22:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:22:35,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:22:35,814 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:22:35,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:35,830 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:22:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:36,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:22:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:22:37,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 18:22:37,539 WARN L186 SmtUtils]: Removed 1 from assertion stack [2018-09-14 18:22:37,539 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:22:37,741 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:22:37,741 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:22:37,747 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:22:37,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:22:37 BoogieIcfgContainer [2018-09-14 18:22:37,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:22:37,748 INFO L168 Benchmark]: Toolchain (without parser) took 234939.71 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -722.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,749 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. [2018-09-14 18:22:37,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3772.68 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 186.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -111.2 MB). Peak memory consumption was 488.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 356.31 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,752 INFO L168 Benchmark]: Boogie Preprocessor took 1751.38 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 872.9 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -898.1 MB). Peak memory consumption was 127.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,753 INFO L168 Benchmark]: RCFGBuilder took 17833.70 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 238.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 149.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,755 INFO L168 Benchmark]: TraceAbstraction took 211219.40 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 857.2 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.3 MB). Peak memory consumption was 926.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:22:37,763 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 3772.68 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 186.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -111.2 MB). Peak memory consumption was 488.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 356.31 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1751.38 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 872.9 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -898.1 MB). Peak memory consumption was 127.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17833.70 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 238.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 149.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 211219.40 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 857.2 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.3 MB). Peak memory consumption was 926.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was analyzing trace of length 985 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was doing sequential composition of 5 TransFormulas, while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 189.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3634 SDtfs, 41587 SDslu, 6157 SDs, 0 SdLazy, 78573 SolverSat, 18877 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 163.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3880 GetRequests, 3823 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169744occurred in iteration=6, 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: 6.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 4998 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 3617 NumberOfCodeBlocks, 3617 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 5513 ConstructedInterpolants, 0 QuantifiedInterpolants, 7932949 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2512 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 2752/2990 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/Problem19_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-22-37-789.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-22-37-789.csv Completed graceful shutdown