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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:49:46,530 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:49:46,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:49:46,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:49:46,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:49:46,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:49:46,546 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:49:46,548 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:49:46,550 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:49:46,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:49:46,552 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:49:46,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:49:46,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:49:46,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:49:46,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:49:46,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:49:46,557 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:49:46,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:49:46,560 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:49:46,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:49:46,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:49:46,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:49:46,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:49:46,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:49:46,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:49:46,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:49:46,571 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:49:46,575 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:49:46,576 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:49:46,577 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:49:46,577 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:49:46,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:49:46,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:49:46,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:49:46,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:49:46,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:49:46,583 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:49:46,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:49:46,616 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:49:46,617 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:49:46,617 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:49:46,617 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:49:46,617 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:49:46,617 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:49:46,618 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:49:46,618 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:49:46,619 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:49:46,619 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:49:46,619 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:49:46,619 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:49:46,620 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:49:46,620 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:49:46,620 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:49:46,621 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:49:46,621 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:49:46,621 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:49:46,621 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:49:46,621 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:49:46,622 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:49:46,622 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:49:46,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:49:46,622 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:49:46,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:49:46,622 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:49:46,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:49:46,623 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:49:46,623 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:49:46,623 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:49:46,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:49:46,624 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:49:46,626 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:49:46,626 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:49:46,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:49:46,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:49:46,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:49:46,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:49:46,698 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:49:46,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-11-12 18:49:46,757 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc166770/523da9f112e34abdb5c39c53ae14156a/FLAG90de0370b [2018-11-12 18:49:47,519 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:49:47,520 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-11-12 18:49:47,566 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc166770/523da9f112e34abdb5c39c53ae14156a/FLAG90de0370b [2018-11-12 18:49:47,591 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc166770/523da9f112e34abdb5c39c53ae14156a [2018-11-12 18:49:47,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:49:47,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:49:47,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:49:47,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:49:47,614 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:49:47,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:49:47" (1/1) ... [2018-11-12 18:49:47,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53863ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:47, skipping insertion in model container [2018-11-12 18:49:47,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:49:47" (1/1) ... [2018-11-12 18:49:47,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:49:47,826 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:49:49,155 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:49:49,160 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:49:49,795 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:49:49,831 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:49:49,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49 WrapperNode [2018-11-12 18:49:49,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:49:49,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:49:49,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:49:49,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:49:49,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:49:50,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:49:50,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:49:50,174 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:49:50,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (1/1) ... [2018-11-12 18:49:50,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:49:50,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:49:50,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:49:50,449 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:49:50,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (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 [2018-11-12 18:49:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:49:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:49:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:49:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:49:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:49:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:49:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:49:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:49:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:49:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:49:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:49:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:49:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:49:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:49:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:49:59,958 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:49:59,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:49:59 BoogieIcfgContainer [2018-11-12 18:49:59,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:49:59,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:49:59,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:49:59,963 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:49:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:49:47" (1/3) ... [2018-11-12 18:49:59,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:49:59, skipping insertion in model container [2018-11-12 18:49:59,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:49:49" (2/3) ... [2018-11-12 18:49:59,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:49:59, skipping insertion in model container [2018-11-12 18:49:59,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:49:59" (3/3) ... [2018-11-12 18:49:59,967 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label43_true-unreach-call.c [2018-11-12 18:49:59,978 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:49:59,989 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:50:00,008 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:50:00,072 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:50:00,073 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:50:00,073 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:50:00,073 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:50:00,073 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:50:00,073 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:50:00,074 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:50:00,074 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:50:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 18:50:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-12 18:50:00,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:00,150 INFO L375 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] [2018-11-12 18:50:00,153 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:00,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:00,160 INFO L82 PathProgramCache]: Analyzing trace with hash -47298708, now seen corresponding path program 1 times [2018-11-12 18:50:00,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:00,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:00,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:00,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:00,358 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:00,795 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:50:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:50:00,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:50:00,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:50:00,931 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:00,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:50:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:50:00,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:50:00,954 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-12 18:50:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:50:09,406 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-12 18:50:09,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:50:09,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-12 18:50:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:50:09,443 INFO L225 Difference]: With dead ends: 2446 [2018-11-12 18:50:09,443 INFO L226 Difference]: Without dead ends: 1604 [2018-11-12 18:50:09,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:50:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-12 18:50:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-12 18:50:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-12 18:50:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-12 18:50:09,620 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 48 [2018-11-12 18:50:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:50:09,621 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-12 18:50:09,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:50:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-12 18:50:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-12 18:50:09,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:09,636 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:50:09,636 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:09,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:09,638 INFO L82 PathProgramCache]: Analyzing trace with hash -19746802, now seen corresponding path program 1 times [2018-11-12 18:50:09,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:09,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:09,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:09,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:09,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:50:09,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:50:09,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:50:09,942 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:09,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:50:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:50:09,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:50:09,945 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-11-12 18:50:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:50:24,876 INFO L93 Difference]: Finished difference Result 6274 states and 11427 transitions. [2018-11-12 18:50:24,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:50:24,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-11-12 18:50:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:50:24,917 INFO L225 Difference]: With dead ends: 6274 [2018-11-12 18:50:24,917 INFO L226 Difference]: Without dead ends: 4676 [2018-11-12 18:50:24,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:50:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-11-12 18:50:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-11-12 18:50:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-11-12 18:50:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7992 transitions. [2018-11-12 18:50:25,087 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7992 transitions. Word has length 124 [2018-11-12 18:50:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:50:25,089 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 7992 transitions. [2018-11-12 18:50:25,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:50:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7992 transitions. [2018-11-12 18:50:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-12 18:50:25,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:25,105 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:50:25,105 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:25,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash 974293318, now seen corresponding path program 1 times [2018-11-12 18:50:25,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:25,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:25,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:25,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:25,108 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:50:25,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:50:25,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:50:25,361 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:25,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:50:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:50:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:50:25,363 INFO L87 Difference]: Start difference. First operand 4676 states and 7992 transitions. Second operand 5 states. [2018-11-12 18:50:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:50:34,992 INFO L93 Difference]: Finished difference Result 14214 states and 24823 transitions. [2018-11-12 18:50:34,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 18:50:34,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-11-12 18:50:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:50:35,051 INFO L225 Difference]: With dead ends: 14214 [2018-11-12 18:50:35,052 INFO L226 Difference]: Without dead ends: 9544 [2018-11-12 18:50:35,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:50:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2018-11-12 18:50:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9456. [2018-11-12 18:50:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9456 states. [2018-11-12 18:50:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 14962 transitions. [2018-11-12 18:50:35,368 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 14962 transitions. Word has length 128 [2018-11-12 18:50:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:50:35,368 INFO L480 AbstractCegarLoop]: Abstraction has 9456 states and 14962 transitions. [2018-11-12 18:50:35,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:50:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 14962 transitions. [2018-11-12 18:50:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 18:50:35,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:35,374 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:50:35,375 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:35,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash -506419933, now seen corresponding path program 1 times [2018-11-12 18:50:35,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:35,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:35,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:35,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:35,378 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:50:35,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:50:35,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:50:35,873 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:35,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:50:35,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:50:35,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:50:35,875 INFO L87 Difference]: Start difference. First operand 9456 states and 14962 transitions. Second operand 6 states. [2018-11-12 18:50:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:50:49,766 INFO L93 Difference]: Finished difference Result 37978 states and 65017 transitions. [2018-11-12 18:50:49,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:50:49,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 18:50:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:50:49,910 INFO L225 Difference]: With dead ends: 37978 [2018-11-12 18:50:49,910 INFO L226 Difference]: Without dead ends: 28528 [2018-11-12 18:50:49,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:50:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28528 states. [2018-11-12 18:50:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28528 to 28473. [2018-11-12 18:50:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28473 states. [2018-11-12 18:50:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28473 states to 28473 states and 44123 transitions. [2018-11-12 18:50:50,831 INFO L78 Accepts]: Start accepts. Automaton has 28473 states and 44123 transitions. Word has length 139 [2018-11-12 18:50:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:50:50,831 INFO L480 AbstractCegarLoop]: Abstraction has 28473 states and 44123 transitions. [2018-11-12 18:50:50,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:50:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 28473 states and 44123 transitions. [2018-11-12 18:50:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-12 18:50:50,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:50,845 INFO L375 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:50:50,845 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:50,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash 236165049, now seen corresponding path program 1 times [2018-11-12 18:50:50,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:50,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:50,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:50,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:50,847 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:51,180 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:50:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:50:51,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:50:51,581 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:50:51,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-12 18:50:51,593 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:50:51,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:50:51,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:50:52,283 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:50:52,285 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Performed 1147 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1147 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 18:50:52,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:52,328 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:50:52,930 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 75.47% of their original sizes. [2018-11-12 18:50:52,931 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:50:53,250 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-12 18:50:53,251 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:50:53,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:50:53,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 18:50:53,252 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:53,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 18:50:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 18:50:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:50:53,254 INFO L87 Difference]: Start difference. First operand 28473 states and 44123 transitions. Second operand 8 states. [2018-11-12 18:51:00,296 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:51:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:51:42,268 INFO L93 Difference]: Finished difference Result 57710 states and 89185 transitions. [2018-11-12 18:51:42,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:51:42,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2018-11-12 18:51:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:51:42,377 INFO L225 Difference]: With dead ends: 57710 [2018-11-12 18:51:42,377 INFO L226 Difference]: Without dead ends: 29243 [2018-11-12 18:51:42,444 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 238 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:51:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29243 states. [2018-11-12 18:51:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29243 to 29241. [2018-11-12 18:51:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29241 states. [2018-11-12 18:51:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29241 states to 29241 states and 44904 transitions. [2018-11-12 18:51:43,196 INFO L78 Accepts]: Start accepts. Automaton has 29241 states and 44904 transitions. Word has length 237 [2018-11-12 18:51:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:51:43,197 INFO L480 AbstractCegarLoop]: Abstraction has 29241 states and 44904 transitions. [2018-11-12 18:51:43,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 18:51:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 29241 states and 44904 transitions. [2018-11-12 18:51:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-12 18:51:43,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:43,210 INFO L375 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:51:43,210 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:43,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:43,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1854952083, now seen corresponding path program 1 times [2018-11-12 18:51:43,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:43,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:43,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:43,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:43,212 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:51:43,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:51:43,806 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:51:43,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-12 18:51:43,807 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2444], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:51:43,815 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:51:43,816 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:51:44,101 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:51:44,397 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:51:44,397 INFO L272 AbstractInterpreter]: Visited 154 different actions 304 times. Merged at 5 different actions 7 times. Never widened. Performed 5570 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5570 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:51:44,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:44,436 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:51:45,928 INFO L227 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-12 18:51:45,928 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:51:48,210 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-11-12 18:51:48,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:51:48,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:51:48,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 18:51:48,212 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:48,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 18:51:48,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 18:51:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:51:48,214 INFO L87 Difference]: Start difference. First operand 29241 states and 44904 transitions. Second operand 20 states. [2018-11-12 18:52:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:52:58,695 INFO L93 Difference]: Finished difference Result 58778 states and 90738 transitions. [2018-11-12 18:52:58,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 18:52:58,696 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 285 [2018-11-12 18:52:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:52:58,869 INFO L225 Difference]: With dead ends: 58778 [2018-11-12 18:52:58,870 INFO L226 Difference]: Without dead ends: 30311 [2018-11-12 18:52:59,011 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 301 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 18:52:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30311 states. [2018-11-12 18:52:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30311 to 30306. [2018-11-12 18:52:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30306 states. [2018-11-12 18:52:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30306 states to 30306 states and 46019 transitions. [2018-11-12 18:52:59,984 INFO L78 Accepts]: Start accepts. Automaton has 30306 states and 46019 transitions. Word has length 285 [2018-11-12 18:52:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:52:59,985 INFO L480 AbstractCegarLoop]: Abstraction has 30306 states and 46019 transitions. [2018-11-12 18:52:59,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 18:52:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 30306 states and 46019 transitions. [2018-11-12 18:52:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-12 18:52:59,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:52:59,999 INFO L375 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:53:00,000 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:00,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash 816193845, now seen corresponding path program 1 times [2018-11-12 18:53:00,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:00,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:00,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:00,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:00,002 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:00,350 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:53:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 76 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:00,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:00,793 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:53:00,794 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-11-12 18:53:00,794 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2444], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:53:00,799 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:53:00,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:53:00,910 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:53:02,095 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:53:02,095 INFO L272 AbstractInterpreter]: Visited 159 different actions 472 times. Merged at 7 different actions 19 times. Never widened. Performed 7563 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7563 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 18:53:02,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:02,102 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:53:02,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:02,102 INFO L192 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 [2018-11-12 18:53:02,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:02,113 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:53:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:02,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:53:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 18:53:02,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:53:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 18:53:02,917 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:53:02,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-12 18:53:02,917 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:02,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:53:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:53:02,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:53:02,919 INFO L87 Difference]: Start difference. First operand 30306 states and 46019 transitions. Second operand 3 states. [2018-11-12 18:53:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:53:08,756 INFO L93 Difference]: Finished difference Result 77194 states and 125370 transitions. [2018-11-12 18:53:08,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:53:08,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-11-12 18:53:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:53:08,977 INFO L225 Difference]: With dead ends: 77194 [2018-11-12 18:53:08,978 INFO L226 Difference]: Without dead ends: 48727 [2018-11-12 18:53:09,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 579 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:53:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48727 states. [2018-11-12 18:53:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48727 to 48727. [2018-11-12 18:53:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48727 states. [2018-11-12 18:53:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48727 states to 48727 states and 73833 transitions. [2018-11-12 18:53:10,405 INFO L78 Accepts]: Start accepts. Automaton has 48727 states and 73833 transitions. Word has length 289 [2018-11-12 18:53:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:53:10,406 INFO L480 AbstractCegarLoop]: Abstraction has 48727 states and 73833 transitions. [2018-11-12 18:53:10,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:53:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 48727 states and 73833 transitions. [2018-11-12 18:53:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-12 18:53:10,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:10,451 INFO L375 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:53:10,451 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:10,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:10,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1748578368, now seen corresponding path program 1 times [2018-11-12 18:53:10,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:10,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:10,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:10,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:10,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:10,954 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:53:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 76 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:11,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:11,867 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:53:11,867 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-11-12 18:53:11,868 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2568], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:53:11,873 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:53:11,873 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-12 18:53:12,333 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 18:53:12,335 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 18:53:12,335 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 18:53:12,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:12,335 INFO L192 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 [2018-11-12 18:53:12,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:12,347 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:53:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:12,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:53:12,499 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 18:53:12,700 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:53:12,701 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:53:12,707 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:53:12,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:53:12 BoogieIcfgContainer [2018-11-12 18:53:12,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:53:12,709 INFO L168 Benchmark]: Toolchain (without parser) took 205102.57 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,710 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-12 18:53:12,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2223.02 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,712 INFO L168 Benchmark]: Boogie Preprocessor took 275.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,713 INFO L168 Benchmark]: RCFGBuilder took 9510.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 651.8 MB). Peak memory consumption was 651.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,714 INFO L168 Benchmark]: TraceAbstraction took 192747.87 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:53:12,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2223.02 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 275.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9510.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 651.8 MB). Peak memory consumption was 651.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 192747.87 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was analyzing trace of length 321 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 192.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 173.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3059 SDtfs, 16157 SDslu, 1329 SDs, 0 SdLazy, 35931 SolverSat, 5039 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1153 GetRequests, 1086 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48727occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9977233074896116 AbsIntWeakeningRatio, 0.10384615384615385 AbsIntAvgWeakeningVarsNumRemoved, 19.071153846153845 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 150 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1539 NumberOfCodeBlocks, 1539 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1819 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222199 SizeOfPredicates, 2 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 803/977 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown