java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:36:49,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:36:49,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:36:49,824 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:36:49,824 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:36:49,826 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:36:49,828 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:36:49,830 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:36:49,833 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:36:49,834 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:36:49,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:36:49,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:36:49,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:36:49,841 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:36:49,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:36:49,843 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:36:49,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:36:49,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:36:49,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:36:49,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:36:49,863 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:36:49,865 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:36:49,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:36:49,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:36:49,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:36:49,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:36:49,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:36:49,871 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:36:49,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:36:49,877 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:36:49,877 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:36:49,878 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:36:49,878 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:36:49,878 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:36:49,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:36:49,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:36:49,883 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:36:49,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:36:49,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:36:49,908 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:36:49,908 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:36:49,908 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:36:49,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:36:49,909 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:36:49,909 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:36:49,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:36:49,909 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:36:49,909 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:36:49,910 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:36:49,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:36:49,911 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:36:49,911 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:36:49,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:36:49,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:36:49,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:36:49,912 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:36:49,912 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:36:49,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:36:49,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:36:49,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:36:49,913 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:36:49,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:36:49,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:36:49,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:36:49,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:36:49,914 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:36:49,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:36:49,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:36:49,916 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:36:49,916 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:36:49,917 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:36:49,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:36:49,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:36:50,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:36:50,006 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:36:50,006 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:36:50,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-10-23 22:36:50,074 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6eb38b83b/6b394712a8c8483d8e7128aa556b3022/FLAG76676d18e [2018-10-23 22:36:50,808 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:36:50,809 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-10-23 22:36:50,835 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6eb38b83b/6b394712a8c8483d8e7128aa556b3022/FLAG76676d18e [2018-10-23 22:36:50,853 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6eb38b83b/6b394712a8c8483d8e7128aa556b3022 [2018-10-23 22:36:50,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:36:50,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:36:50,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:36:50,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:36:50,873 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:36:50,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:36:50" (1/1) ... [2018-10-23 22:36:50,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce99c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:50, skipping insertion in model container [2018-10-23 22:36:50,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:36:50" (1/1) ... [2018-10-23 22:36:50,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:36:50,981 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:36:51,719 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:36:51,723 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:36:52,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:36:52,059 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:36:52,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52 WrapperNode [2018-10-23 22:36:52,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:36:52,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:36:52,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:36:52,062 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:36:52,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:36:52,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:36:52,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:36:52,429 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:36:52,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... [2018-10-23 22:36:52,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:36:52,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:36:52,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:36:52,633 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:36:52,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:36:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:36:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:36:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:36:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:36:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:36:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:36:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:36:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:36:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:36:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:36:59,573 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:36:59,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:59 BoogieIcfgContainer [2018-10-23 22:36:59,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:36:59,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:36:59,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:36:59,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:36:59,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:36:50" (1/3) ... [2018-10-23 22:36:59,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d539e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:59, skipping insertion in model container [2018-10-23 22:36:59,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:52" (2/3) ... [2018-10-23 22:36:59,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d539e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:59, skipping insertion in model container [2018-10-23 22:36:59,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:59" (3/3) ... [2018-10-23 22:36:59,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label39_false-unreach-call.c [2018-10-23 22:36:59,598 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:36:59,609 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:36:59,630 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:36:59,686 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:36:59,687 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:36:59,687 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:36:59,687 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:36:59,687 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:36:59,687 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:36:59,687 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:36:59,687 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:36:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-23 22:36:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 22:36:59,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:36:59,724 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:36:59,727 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:36:59,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:36:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash -665344236, now seen corresponding path program 1 times [2018-10-23 22:36:59,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:36:59,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:36:59,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:36:59,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:36:59,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:36:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:37:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:37:00,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:37:00,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:37:00,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:37:00,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:37:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:37:00,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:37:00,188 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-23 22:37:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:37:09,985 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-23 22:37:09,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:37:09,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-23 22:37:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:37:10,017 INFO L225 Difference]: With dead ends: 1558 [2018-10-23 22:37:10,018 INFO L226 Difference]: Without dead ends: 1114 [2018-10-23 22:37:10,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:37:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-23 22:37:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-23 22:37:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-23 22:37:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-23 22:37:10,200 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 18 [2018-10-23 22:37:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:37:10,201 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-23 22:37:10,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:37:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-23 22:37:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 22:37:10,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:37:10,208 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:37:10,209 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:37:10,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:37:10,209 INFO L82 PathProgramCache]: Analyzing trace with hash -190477857, now seen corresponding path program 1 times [2018-10-23 22:37:10,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:37:10,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:10,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:37:10,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:10,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:37:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:37:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:37:10,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:37:10,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:37:10,527 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:37:10,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:37:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:37:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:37:10,530 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-10-23 22:37:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:37:26,528 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-10-23 22:37:26,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:37:26,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-23 22:37:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:37:26,543 INFO L225 Difference]: With dead ends: 2506 [2018-10-23 22:37:26,543 INFO L226 Difference]: Without dead ends: 1753 [2018-10-23 22:37:26,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:37:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-10-23 22:37:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-10-23 22:37:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-23 22:37:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-10-23 22:37:26,629 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 88 [2018-10-23 22:37:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:37:26,629 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-10-23 22:37:26,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:37:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-10-23 22:37:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-23 22:37:26,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:37:26,634 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:37:26,634 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:37:26,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:37:26,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1516002770, now seen corresponding path program 1 times [2018-10-23 22:37:26,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:37:26,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:26,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:37:26,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:26,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:37:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:37:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:37:26,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:37:26,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:37:26,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:37:26,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:37:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:37:26,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:37:26,861 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-10-23 22:37:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:37:41,840 INFO L93 Difference]: Finished difference Result 5661 states and 10507 transitions. [2018-10-23 22:37:41,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 22:37:41,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-23 22:37:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:37:41,887 INFO L225 Difference]: With dead ends: 5661 [2018-10-23 22:37:41,888 INFO L226 Difference]: Without dead ends: 3934 [2018-10-23 22:37:41,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:37:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2018-10-23 22:37:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3824. [2018-10-23 22:37:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2018-10-23 22:37:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5802 transitions. [2018-10-23 22:37:42,072 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5802 transitions. Word has length 89 [2018-10-23 22:37:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:37:42,073 INFO L481 AbstractCegarLoop]: Abstraction has 3824 states and 5802 transitions. [2018-10-23 22:37:42,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:37:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5802 transitions. [2018-10-23 22:37:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-23 22:37:42,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:37:42,078 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:37:42,078 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:37:42,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:37:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1135663782, now seen corresponding path program 1 times [2018-10-23 22:37:42,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:37:42,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:42,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:37:42,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:42,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:37:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:37:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:37:42,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:37:42,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:37:42,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:37:42,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:37:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:37:42,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:37:42,319 INFO L87 Difference]: Start difference. First operand 3824 states and 5802 transitions. Second operand 6 states. [2018-10-23 22:37:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:37:49,642 INFO L93 Difference]: Finished difference Result 10744 states and 17604 transitions. [2018-10-23 22:37:49,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:37:49,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-23 22:37:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:37:49,706 INFO L225 Difference]: With dead ends: 10744 [2018-10-23 22:37:49,707 INFO L226 Difference]: Without dead ends: 7235 [2018-10-23 22:37:49,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:37:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2018-10-23 22:37:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 7180. [2018-10-23 22:37:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7180 states. [2018-10-23 22:37:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 10397 transitions. [2018-10-23 22:37:49,998 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 10397 transitions. Word has length 93 [2018-10-23 22:37:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:37:49,999 INFO L481 AbstractCegarLoop]: Abstraction has 7180 states and 10397 transitions. [2018-10-23 22:37:49,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:37:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 10397 transitions. [2018-10-23 22:37:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 22:37:50,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:37:50,002 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:37:50,002 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:37:50,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:37:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1390583197, now seen corresponding path program 1 times [2018-10-23 22:37:50,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:37:50,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:50,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:37:50,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:37:50,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:37:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:37:50,511 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 22:37:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:37:50,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:37:50,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:37:50,586 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-23 22:37:50,588 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-23 22:37:50,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:37:50,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:37:52,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:38:01,134 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:38:01,136 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:38:01,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:38:01,148 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:38:01,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:38:01,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:38:01,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:38:01,171 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:38:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:38:01,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:38:05,622 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 37 [2018-10-23 22:38:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:38:07,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:38:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:38:08,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-23 22:38:08,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-10-23 22:38:08,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:38:08,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:38:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:38:08,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-23 22:38:08,037 INFO L87 Difference]: Start difference. First operand 7180 states and 10397 transitions. Second operand 3 states. [2018-10-23 22:38:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:38:12,123 INFO L93 Difference]: Finished difference Result 15307 states and 23159 transitions. [2018-10-23 22:38:12,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:38:12,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-10-23 22:38:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:38:12,189 INFO L225 Difference]: With dead ends: 15307 [2018-10-23 22:38:12,190 INFO L226 Difference]: Without dead ends: 8442 [2018-10-23 22:38:12,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-23 22:38:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2018-10-23 22:38:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 8428. [2018-10-23 22:38:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8428 states. [2018-10-23 22:38:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 12392 transitions. [2018-10-23 22:38:12,530 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 12392 transitions. Word has length 114 [2018-10-23 22:38:12,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:38:12,530 INFO L481 AbstractCegarLoop]: Abstraction has 8428 states and 12392 transitions. [2018-10-23 22:38:12,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:38:12,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 12392 transitions. [2018-10-23 22:38:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-23 22:38:12,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:38:12,536 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:38:12,541 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:38:12,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:38:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1089244079, now seen corresponding path program 1 times [2018-10-23 22:38:12,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:38:12,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:38:12,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:38:12,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:38:12,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:38:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:38:13,131 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-23 22:38:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:38:13,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:38:13,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:38:13,266 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-23 22:38:13,267 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1056], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-23 22:38:13,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:38:13,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:38:16,836 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:38:16,905 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:38:16,906 INFO L272 AbstractInterpreter]: Visited 172 different actions 172 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:38:16,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:38:16,933 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:38:18,541 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 77.35% of their original sizes. [2018-10-23 22:38:18,541 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:38:19,189 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:38:19,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:38:19,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-23 22:38:19,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:38:19,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 22:38:19,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 22:38:19,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:38:19,191 INFO L87 Difference]: Start difference. First operand 8428 states and 12392 transitions. Second operand 8 states. [2018-10-23 22:39:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:39:08,002 INFO L93 Difference]: Finished difference Result 16543 states and 24442 transitions. [2018-10-23 22:39:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:39:08,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2018-10-23 22:39:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:39:08,049 INFO L225 Difference]: With dead ends: 16543 [2018-10-23 22:39:08,049 INFO L226 Difference]: Without dead ends: 8429 [2018-10-23 22:39:08,074 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:39:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8429 states. [2018-10-23 22:39:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 8420. [2018-10-23 22:39:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8420 states. [2018-10-23 22:39:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 12342 transitions. [2018-10-23 22:39:08,534 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 12342 transitions. Word has length 186 [2018-10-23 22:39:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:39:08,535 INFO L481 AbstractCegarLoop]: Abstraction has 8420 states and 12342 transitions. [2018-10-23 22:39:08,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 22:39:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 12342 transitions. [2018-10-23 22:39:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-23 22:39:08,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:39:08,539 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:39:08,539 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:39:08,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:39:08,540 INFO L82 PathProgramCache]: Analyzing trace with hash 616391350, now seen corresponding path program 1 times [2018-10-23 22:39:08,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:39:08,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:39:08,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:39:08,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:39:08,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:39:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:39:08,842 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:39:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 23 proven. 82 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-23 22:39:08,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:39:08,907 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:39:08,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-23 22:39:08,908 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-23 22:39:08,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:39:08,913 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:39:10,286 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:39:20,362 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:39:20,362 INFO L272 AbstractInterpreter]: Visited 116 different actions 334 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:39:20,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:39:20,365 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:39:20,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:39:20,365 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:39:20,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:39:20,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:39:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:39:20,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:39:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:39:20,590 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:39:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:39:20,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-23 22:39:20,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-23 22:39:20,803 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 22:39:20,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 22:39:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 22:39:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-23 22:39:20,804 INFO L87 Difference]: Start difference. First operand 8420 states and 12342 transitions. Second operand 9 states. [2018-10-23 22:39:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:39:30,701 INFO L93 Difference]: Finished difference Result 26019 states and 41686 transitions. [2018-10-23 22:39:30,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 22:39:30,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2018-10-23 22:39:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:39:30,790 INFO L225 Difference]: With dead ends: 26019 [2018-10-23 22:39:30,791 INFO L226 Difference]: Without dead ends: 17913 [2018-10-23 22:39:30,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 442 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2018-10-23 22:39:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17913 states. [2018-10-23 22:39:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17913 to 17152. [2018-10-23 22:39:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17152 states. [2018-10-23 22:39:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17152 states to 17152 states and 23952 transitions. [2018-10-23 22:39:31,291 INFO L78 Accepts]: Start accepts. Automaton has 17152 states and 23952 transitions. Word has length 221 [2018-10-23 22:39:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:39:31,292 INFO L481 AbstractCegarLoop]: Abstraction has 17152 states and 23952 transitions. [2018-10-23 22:39:31,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 22:39:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 17152 states and 23952 transitions. [2018-10-23 22:39:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-23 22:39:31,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:39:31,299 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:39:31,299 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:39:31,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:39:31,300 INFO L82 PathProgramCache]: Analyzing trace with hash 315585456, now seen corresponding path program 1 times [2018-10-23 22:39:31,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:39:31,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:39:31,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:39:31,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:39:31,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:39:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:39:31,866 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-10-23 22:39:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:39:32,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:39:32,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:39:32,232 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-23 22:39:32,232 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-23 22:39:32,239 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:39:32,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:39:37,032 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:40:00,627 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:40:00,627 INFO L272 AbstractInterpreter]: Visited 246 different actions 724 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:40:00,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:40:00,633 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:40:00,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:40:00,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:40:00,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:40:00,642 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:40:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:40:00,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:40:06,974 WARN L179 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 38 [2018-10-23 22:40:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:40:07,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:40:09,311 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 35 DAG size of output: 13 [2018-10-23 22:40:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:40:10,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-23 22:40:10,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-23 22:40:10,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:40:10,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:40:10,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:40:10,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-23 22:40:10,639 INFO L87 Difference]: Start difference. First operand 17152 states and 23952 transitions. Second operand 6 states. Received shutdown request... [2018-10-23 22:40:41,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 22:40:41,760 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:40:41,766 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:40:41,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:40:41 BoogieIcfgContainer [2018-10-23 22:40:41,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:40:41,768 INFO L168 Benchmark]: Toolchain (without parser) took 230901.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -427.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,769 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. [2018-10-23 22:40:41,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1192.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 366.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,771 INFO L168 Benchmark]: Boogie Preprocessor took 204.26 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,772 INFO L168 Benchmark]: RCFGBuilder took 6941.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 310.5 MB). Peak memory consumption was 310.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,773 INFO L168 Benchmark]: TraceAbstraction took 222191.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 23.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 22:40:41,778 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 1192.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 366.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.26 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6941.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 310.5 MB). Peak memory consumption was 310.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222191.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 23.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (17152states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (21669 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 142.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2024 SDtfs, 11215 SDslu, 1710 SDs, 0 SdLazy, 18867 SolverSat, 4744 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 113.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1444 GetRequests, 1364 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17152occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 54.0s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9954661182922054 AbsIntWeakeningRatio, 0.10810810810810811 AbsIntAvgWeakeningVarsNumRemoved, 894.8810810810811 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1324 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 1656 NumberOfCodeBlocks, 1656 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2233 ConstructedInterpolants, 257 QuantifiedInterpolants, 3226598 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 331/464 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown