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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:01:11,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:01:11,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:01:11,606 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:01:11,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:01:11,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:01:11,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:01:11,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:01:11,616 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:01:11,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:01:11,619 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:01:11,620 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:01:11,621 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:01:11,622 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:01:11,631 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:01:11,631 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:01:11,632 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:01:11,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:01:11,640 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:01:11,643 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:01:11,645 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:01:11,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:01:11,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 02:01:11,649 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 02:01:11,649 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 02:01:11,650 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 02:01:11,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 02:01:11,651 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 02:01:11,652 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 02:01:11,653 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 02:01:11,653 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 02:01:11,654 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 02:01:11,654 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 02:01:11,654 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 02:01:11,655 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 02:01:11,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 02:01:11,656 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:01:11,671 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:01:11,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:01:11,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:01:11,672 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:01:11,672 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:01:11,672 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:01:11,673 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:01:11,674 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:01:11,674 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:01:11,674 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:01:11,675 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:01:11,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:01:11,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:01:11,675 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:01:11,675 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:01:11,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:01:11,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:01:11,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:01:11,676 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:01:11,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:01:11,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:01:11,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:01:11,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:01:11,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:01:11,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:01:11,677 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:01:11,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:01:11,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:01:11,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:01:11,678 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:01:11,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:01:11,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:01:11,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:01:11,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:01:11,739 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:01:11,739 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:01:11,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-10-25 02:01:11,804 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7237da6d8/3bf488d936a340e18f0a55eb4eebbd3a/FLAGed3c46a91 [2018-10-25 02:01:12,508 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:01:12,510 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-10-25 02:01:12,543 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7237da6d8/3bf488d936a340e18f0a55eb4eebbd3a/FLAGed3c46a91 [2018-10-25 02:01:12,561 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7237da6d8/3bf488d936a340e18f0a55eb4eebbd3a [2018-10-25 02:01:12,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:01:12,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:01:12,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:01:12,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:01:12,582 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:01:12,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:01:12" (1/1) ... [2018-10-25 02:01:12,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:12, skipping insertion in model container [2018-10-25 02:01:12,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:01:12" (1/1) ... [2018-10-25 02:01:12,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:01:12,705 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:01:13,769 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:01:13,774 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:01:14,185 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:01:14,210 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:01:14,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14 WrapperNode [2018-10-25 02:01:14,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:01:14,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:01:14,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:01:14,212 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:01:14,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:01:14,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:01:14,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:01:14,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:01:14,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (1/1) ... [2018-10-25 02:01:14,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:01:14,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:01:14,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:01:14,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:01:14,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (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 [2018-10-25 02:01:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:01:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:01:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:01:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:01:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:01:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:01:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:01:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:01:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:01:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:01:28,508 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:01:28,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:01:28 BoogieIcfgContainer [2018-10-25 02:01:28,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:01:28,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:01:28,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:01:28,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:01:28,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:01:12" (1/3) ... [2018-10-25 02:01:28,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0846e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:01:28, skipping insertion in model container [2018-10-25 02:01:28,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:01:14" (2/3) ... [2018-10-25 02:01:28,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0846e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:01:28, skipping insertion in model container [2018-10-25 02:01:28,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:01:28" (3/3) ... [2018-10-25 02:01:28,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47_true-unreach-call.c [2018-10-25 02:01:28,528 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:01:28,538 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:01:28,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:01:28,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:01:28,599 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:01:28,600 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:01:28,600 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:01:28,600 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:01:28,600 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:01:28,600 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:01:28,601 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:01:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 02:01:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-25 02:01:28,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:28,657 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, 1, 1, 1] [2018-10-25 02:01:28,660 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:28,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:28,666 INFO L82 PathProgramCache]: Analyzing trace with hash -572495578, now seen corresponding path program 1 times [2018-10-25 02:01:28,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:28,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:28,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:28,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:28,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:29,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:29,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:01:29,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:29,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:01:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:01:29,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:01:29,214 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 02:01:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:38,983 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-25 02:01:38,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:01:38,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-25 02:01:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:39,038 INFO L225 Difference]: With dead ends: 2164 [2018-10-25 02:01:39,039 INFO L226 Difference]: Without dead ends: 1554 [2018-10-25 02:01:39,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:01:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-25 02:01:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-25 02:01:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-25 02:01:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-25 02:01:39,185 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 51 [2018-10-25 02:01:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:39,185 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-25 02:01:39,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:01:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-25 02:01:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-25 02:01:39,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:39,193 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, 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] [2018-10-25 02:01:39,194 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:39,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1304014569, now seen corresponding path program 1 times [2018-10-25 02:01:39,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:39,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:39,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:39,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:39,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:39,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:39,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:01:39,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:39,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:01:39,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:01:39,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:01:39,480 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-25 02:01:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:50,067 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-25 02:01:50,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:01:50,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-10-25 02:01:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:50,085 INFO L225 Difference]: With dead ends: 3031 [2018-10-25 02:01:50,085 INFO L226 Difference]: Without dead ends: 1985 [2018-10-25 02:01:50,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:01:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-25 02:01:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-25 02:01:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-25 02:01:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-25 02:01:50,176 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 123 [2018-10-25 02:01:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:50,177 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-25 02:01:50,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:01:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-25 02:01:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-25 02:01:50,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:50,196 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, 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] [2018-10-25 02:01:50,197 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:50,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2080151345, now seen corresponding path program 1 times [2018-10-25 02:01:50,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:50,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:50,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:50,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:50,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:50,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:50,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:01:50,653 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-10-25 02:01:50,655 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:01:50,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:01:50,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:01:52,507 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:01:52,510 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:01:52,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:52,557 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:01:52,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:52,557 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 [2018-10-25 02:01:52,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:52,584 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:01:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:52,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:01:59,296 WARN L179 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-25 02:01:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:59,471 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:00,470 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-25 02:02:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:00,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:02:00,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-25 02:02:00,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:00,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:02:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:02:00,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 02:02:00,952 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-25 02:02:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:32,593 INFO L93 Difference]: Finished difference Result 7520 states and 12912 transitions. [2018-10-25 02:02:32,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:02:32,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-25 02:02:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:32,633 INFO L225 Difference]: With dead ends: 7520 [2018-10-25 02:02:32,633 INFO L226 Difference]: Without dead ends: 5567 [2018-10-25 02:02:32,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 02:02:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2018-10-25 02:02:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5556. [2018-10-25 02:02:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2018-10-25 02:02:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9357 transitions. [2018-10-25 02:02:32,840 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9357 transitions. Word has length 126 [2018-10-25 02:02:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:32,841 INFO L481 AbstractCegarLoop]: Abstraction has 5556 states and 9357 transitions. [2018-10-25 02:02:32,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:02:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9357 transitions. [2018-10-25 02:02:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-25 02:02:32,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:32,846 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, 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] [2018-10-25 02:02:32,847 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:32,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:32,847 INFO L82 PathProgramCache]: Analyzing trace with hash 486218423, now seen corresponding path program 1 times [2018-10-25 02:02:32,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:32,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:32,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:32,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:32,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:33,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:33,288 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:33,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-10-25 02:02:33,289 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:33,294 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:33,294 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:33,740 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:33,740 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:02:33,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:33,779 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:33,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:33,779 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 [2018-10-25 02:02:33,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:33,791 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:33,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:34,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:34,230 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:02:34,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:02:34,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:34,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:02:34,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:02:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:34,232 INFO L87 Difference]: Start difference. First operand 5556 states and 9357 transitions. Second operand 3 states. [2018-10-25 02:02:40,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:40,689 INFO L93 Difference]: Finished difference Result 13729 states and 23017 transitions. [2018-10-25 02:02:40,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:02:40,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-10-25 02:02:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:40,745 INFO L225 Difference]: With dead ends: 13729 [2018-10-25 02:02:40,745 INFO L226 Difference]: Without dead ends: 8179 [2018-10-25 02:02:40,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8179 states. [2018-10-25 02:02:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8179 to 8178. [2018-10-25 02:02:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8178 states. [2018-10-25 02:02:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 12799 transitions. [2018-10-25 02:02:41,014 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 12799 transitions. Word has length 139 [2018-10-25 02:02:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:41,014 INFO L481 AbstractCegarLoop]: Abstraction has 8178 states and 12799 transitions. [2018-10-25 02:02:41,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:02:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 12799 transitions. [2018-10-25 02:02:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-25 02:02:41,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:41,025 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:02:41,025 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:41,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash 661531126, now seen corresponding path program 1 times [2018-10-25 02:02:41,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:41,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:41,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:41,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:41,027 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:41,427 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:02:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:02:41,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:41,900 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:41,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-25 02:02:41,901 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:41,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:41,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:43,020 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:43,021 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:02:43,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:43,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:43,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:43,059 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 [2018-10-25 02:02:43,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:43,073 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:43,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:43,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:43,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:02:43,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:02:43,739 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:02:43,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:02:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:02:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:02:43,740 INFO L87 Difference]: Start difference. First operand 8178 states and 12799 transitions. Second operand 9 states. [2018-10-25 02:02:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:51,107 INFO L93 Difference]: Finished difference Result 16009 states and 25227 transitions. [2018-10-25 02:02:51,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:02:51,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 224 [2018-10-25 02:02:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:51,144 INFO L225 Difference]: With dead ends: 16009 [2018-10-25 02:02:51,145 INFO L226 Difference]: Without dead ends: 6867 [2018-10-25 02:02:51,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:02:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2018-10-25 02:02:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6834. [2018-10-25 02:02:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6834 states. [2018-10-25 02:02:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 8208 transitions. [2018-10-25 02:02:51,329 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 8208 transitions. Word has length 224 [2018-10-25 02:02:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:51,329 INFO L481 AbstractCegarLoop]: Abstraction has 6834 states and 8208 transitions. [2018-10-25 02:02:51,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:02:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 8208 transitions. [2018-10-25 02:02:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-25 02:02:51,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:51,336 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:02:51,337 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:51,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash -478946251, now seen corresponding path program 1 times [2018-10-25 02:02:51,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:51,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:51,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:51,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:51,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:52,192 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 02:02:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 89 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:02:52,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:52,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:52,837 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-25 02:02:52,838 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:52,845 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:52,845 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:53,301 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:53,301 INFO L272 AbstractInterpreter]: Visited 175 different actions 349 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:02:53,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:53,343 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:53,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:53,344 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:02:53,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:53,358 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:53,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:53,947 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-25 02:03:02,346 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-25 02:03:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 02:03:02,415 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:03:05,326 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 02:03:05,438 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 02:03:11,751 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 61 DAG size of output: 23 [2018-10-25 02:03:13,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2018-10-25 02:03:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 81 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:19,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:03:19,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 21 [2018-10-25 02:03:19,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:19,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:03:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:03:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=328, Unknown=8, NotChecked=0, Total=420 [2018-10-25 02:03:19,284 INFO L87 Difference]: Start difference. First operand 6834 states and 8208 transitions. Second operand 7 states. Received shutdown request... [2018-10-25 02:05:29,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 02:05:29,894 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:05:29,900 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:05:29,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:05:29 BoogieIcfgContainer [2018-10-25 02:05:29,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:05:29,901 INFO L168 Benchmark]: Toolchain (without parser) took 257326.17 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 480.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:05:29,902 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-25 02:05:29,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1634.37 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:05:29,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:05:29,904 INFO L168 Benchmark]: Boogie Preprocessor took 218.06 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:05:29,905 INFO L168 Benchmark]: RCFGBuilder took 13583.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 457.3 MB). Peak memory consumption was 457.3 MB. Max. memory is 7.1 GB. [2018-10-25 02:05:29,906 INFO L168 Benchmark]: TraceAbstraction took 241389.69 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 732.4 MB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -735.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:05:29,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1634.37 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 495.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 218.06 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13583.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 457.3 MB). Peak memory consumption was 457.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241389.69 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 732.4 MB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -735.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 140). Cancelled while BasicCegarLoop was constructing difference of abstraction (6834states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (3442 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 241.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 196.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1809 SDtfs, 9864 SDslu, 1145 SDs, 0 SdLazy, 13972 SolverSat, 4876 SolverUnsat, 65 SolverUnknown, 0 SolverNotchecked, 186.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1652 GetRequests, 1575 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8178occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.0s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 573 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 1762 NumberOfCodeBlocks, 1762 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2542 ConstructedInterpolants, 346 QuantifiedInterpolants, 5654489 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1482 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 1056/1325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown