java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:01:23,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:01:23,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:01:23,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:01:23,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:01:23,747 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:01:23,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:01:23,750 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:01:23,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:01:23,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:01:23,754 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:01:23,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:01:23,755 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:01:23,756 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:01:23,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:01:23,758 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:01:23,759 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:01:23,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:01:23,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:01:23,764 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:01:23,765 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:01:23,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:01:23,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:01:23,769 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:01:23,769 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:01:23,770 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:01:23,771 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:01:23,772 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:01:23,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:01:23,776 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:01:23,776 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:01:23,777 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:01:23,777 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:01:23,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:01:23,778 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:01:23,779 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:01:23,779 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:01:23,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:01:23,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:01:23,814 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:01:23,814 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:01:23,814 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:01:23,814 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:01:23,817 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:01:23,817 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:01:23,817 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:01:23,817 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:01:23,817 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:01:23,818 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:01:23,818 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:01:23,818 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:01:23,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:01:23,819 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:01:23,819 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:01:23,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:01:23,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:01:23,820 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:01:23,821 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:01:23,822 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:01:23,822 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:01:23,822 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:01:23,822 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:01:23,822 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:01:23,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:23,823 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:01:23,823 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:01:23,823 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:01:23,823 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:01:23,824 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:01:23,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:01:23,824 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:01:23,824 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:01:23,824 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:01:23,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:01:23,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:01:23,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:01:23,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:01:23,914 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:01:23,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 09:01:23,974 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f64bad9/59d00fc055db428b8715a05be17e3c67/FLAGcad0ad59e [2018-11-07 09:01:24,572 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:01:24,573 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 09:01:24,601 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f64bad9/59d00fc055db428b8715a05be17e3c67/FLAGcad0ad59e [2018-11-07 09:01:24,618 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f64bad9/59d00fc055db428b8715a05be17e3c67 [2018-11-07 09:01:24,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:01:24,633 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:01:24,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:24,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:01:24,639 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:01:24,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:24" (1/1) ... [2018-11-07 09:01:24,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:24, skipping insertion in model container [2018-11-07 09:01:24,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:24" (1/1) ... [2018-11-07 09:01:24,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:01:24,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:01:25,198 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:25,204 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:01:25,372 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:25,396 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:01:25,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25 WrapperNode [2018-11-07 09:01:25,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:25,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:25,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:01:25,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:01:25,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:25,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:01:25,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:01:25,572 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:01:25,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... [2018-11-07 09:01:25,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:01:25,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:01:25,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:01:25,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:01:25,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:01:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:01:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:01:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:01:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:01:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:01:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:01:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:01:25,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:01:29,581 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:01:29,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:29 BoogieIcfgContainer [2018-11-07 09:01:29,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:01:29,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:01:29,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:01:29,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:01:29,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:01:24" (1/3) ... [2018-11-07 09:01:29,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:29, skipping insertion in model container [2018-11-07 09:01:29,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:25" (2/3) ... [2018-11-07 09:01:29,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:29, skipping insertion in model container [2018-11-07 09:01:29,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:29" (3/3) ... [2018-11-07 09:01:29,591 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 09:01:29,600 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:01:29,609 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:01:29,629 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:01:29,675 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:01:29,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:01:29,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:01:29,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:01:29,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:01:29,677 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:01:29,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:01:29,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:01:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 09:01:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 09:01:29,719 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:29,721 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] [2018-11-07 09:01:29,723 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:29,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:29,729 INFO L82 PathProgramCache]: Analyzing trace with hash -956802812, now seen corresponding path program 1 times [2018-11-07 09:01:29,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:29,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:29,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:29,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:29,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:30,212 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:01:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:30,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:30,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:01:30,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:30,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:01:30,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:01:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:01:30,359 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 09:01:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:32,282 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 09:01:32,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:01:32,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 09:01:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:32,309 INFO L225 Difference]: With dead ends: 691 [2018-11-07 09:01:32,310 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 09:01:32,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:01:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 09:01:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 09:01:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 09:01:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 09:01:32,424 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 46 [2018-11-07 09:01:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:32,425 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 09:01:32,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:01:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 09:01:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 09:01:32,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:32,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:32,439 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:32,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash -910572689, now seen corresponding path program 1 times [2018-11-07 09:01:32,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:32,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:32,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:32,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:32,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:32,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:32,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:01:32,811 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:32,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:01:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:01:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:01:32,815 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 09:01:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:34,952 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 09:01:34,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:01:34,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 09:01:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:34,959 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 09:01:34,960 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 09:01:34,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:01:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 09:01:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 09:01:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 09:01:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 09:01:35,002 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 133 [2018-11-07 09:01:35,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:35,003 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 09:01:35,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:01:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 09:01:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 09:01:35,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:35,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:35,008 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:35,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 156539316, now seen corresponding path program 1 times [2018-11-07 09:01:35,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:35,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:35,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:35,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:35,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:35,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:01:35,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:35,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:01:35,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:01:35,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:35,205 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 09:01:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:39,006 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-11-07 09:01:39,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:01:39,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-07 09:01:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:39,027 INFO L225 Difference]: With dead ends: 2352 [2018-11-07 09:01:39,028 INFO L226 Difference]: Without dead ends: 1733 [2018-11-07 09:01:39,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-07 09:01:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-07 09:01:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 09:01:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2678 transitions. [2018-11-07 09:01:39,123 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2678 transitions. Word has length 142 [2018-11-07 09:01:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:39,123 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2678 transitions. [2018-11-07 09:01:39,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:01:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2678 transitions. [2018-11-07 09:01:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 09:01:39,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:39,142 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:01:39,142 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:39,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:39,143 INFO L82 PathProgramCache]: Analyzing trace with hash -559015785, now seen corresponding path program 1 times [2018-11-07 09:01:39,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:39,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:39,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:39,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:39,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:01:39,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:39,751 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:39,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 09:01:39,755 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:39,804 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:39,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:43,670 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:01:43,672 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:01:43,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:43,717 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:01:47,841 INFO L227 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-07 09:01:47,843 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:01:48,083 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 09:01:48,083 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:01:48,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:01:48,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 09:01:48,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:48,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:01:48,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:01:48,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:01:48,089 INFO L87 Difference]: Start difference. First operand 1733 states and 2678 transitions. Second operand 6 states. [2018-11-07 09:02:12,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:12,781 INFO L93 Difference]: Finished difference Result 3645 states and 5642 transitions. [2018-11-07 09:02:12,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:02:12,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-11-07 09:02:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:12,793 INFO L225 Difference]: With dead ends: 3645 [2018-11-07 09:02:12,794 INFO L226 Difference]: Without dead ends: 1918 [2018-11-07 09:02:12,803 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:02:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-07 09:02:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-07 09:02:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 09:02:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2869 transitions. [2018-11-07 09:02:12,860 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2869 transitions. Word has length 265 [2018-11-07 09:02:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:12,860 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2869 transitions. [2018-11-07 09:02:12,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:02:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2869 transitions. [2018-11-07 09:02:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-07 09:02:12,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:12,871 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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] [2018-11-07 09:02:12,872 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:12,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:12,872 INFO L82 PathProgramCache]: Analyzing trace with hash 211096808, now seen corresponding path program 1 times [2018-11-07 09:02:12,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:12,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:12,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:12,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:12,874 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 205 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:02:13,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:13,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:13,716 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-11-07 09:02:13,717 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:13,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:13,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:17,345 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:02:17,346 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:02:17,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:17,356 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:02:19,836 INFO L227 lantSequenceWeakener]: Weakened 347 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-07 09:02:19,836 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:02:20,329 INFO L415 sIntCurrentIteration]: We unified 349 AI predicates to 349 [2018-11-07 09:02:20,329 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:02:20,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:02:20,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 09:02:20,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:20,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:02:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:02:20,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:02:20,331 INFO L87 Difference]: Start difference. First operand 1916 states and 2869 transitions. Second operand 10 states. [2018-11-07 09:03:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:08,082 INFO L93 Difference]: Finished difference Result 4389 states and 6529 transitions. [2018-11-07 09:03:08,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:03:08,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 350 [2018-11-07 09:03:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:08,095 INFO L225 Difference]: With dead ends: 4389 [2018-11-07 09:03:08,095 INFO L226 Difference]: Without dead ends: 2292 [2018-11-07 09:03:08,104 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:03:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2018-11-07 09:03:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2290. [2018-11-07 09:03:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2018-11-07 09:03:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3266 transitions. [2018-11-07 09:03:08,164 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3266 transitions. Word has length 350 [2018-11-07 09:03:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:08,165 INFO L480 AbstractCegarLoop]: Abstraction has 2290 states and 3266 transitions. [2018-11-07 09:03:08,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:03:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3266 transitions. [2018-11-07 09:03:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-11-07 09:03:08,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:08,178 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:08,178 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:08,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1727143296, now seen corresponding path program 1 times [2018-11-07 09:03:08,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:08,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:08,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:08,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:08,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 354 proven. 243 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-07 09:03:09,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:09,119 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:09,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 451 with the following transitions: [2018-11-07 09:03:09,120 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:09,124 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:09,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:13,086 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:13,086 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:03:13,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:13,095 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:15,480 INFO L227 lantSequenceWeakener]: Weakened 447 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 09:03:15,480 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:15,664 INFO L415 sIntCurrentIteration]: We unified 449 AI predicates to 449 [2018-11-07 09:03:15,664 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:15,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:15,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 09:03:15,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:03:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:03:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:03:15,667 INFO L87 Difference]: Start difference. First operand 2290 states and 3266 transitions. Second operand 10 states. [2018-11-07 09:03:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:32,859 INFO L93 Difference]: Finished difference Result 4205 states and 6147 transitions. [2018-11-07 09:03:32,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:03:32,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 450 [2018-11-07 09:03:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:32,870 INFO L225 Difference]: With dead ends: 4205 [2018-11-07 09:03:32,870 INFO L226 Difference]: Without dead ends: 2104 [2018-11-07 09:03:32,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 457 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:03:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2018-11-07 09:03:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2101. [2018-11-07 09:03:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-11-07 09:03:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3051 transitions. [2018-11-07 09:03:32,932 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3051 transitions. Word has length 450 [2018-11-07 09:03:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:32,933 INFO L480 AbstractCegarLoop]: Abstraction has 2101 states and 3051 transitions. [2018-11-07 09:03:32,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:03:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3051 transitions. [2018-11-07 09:03:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-11-07 09:03:32,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:32,949 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:32,950 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:32,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:32,950 INFO L82 PathProgramCache]: Analyzing trace with hash -951862904, now seen corresponding path program 1 times [2018-11-07 09:03:32,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:32,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:32,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:32,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:32,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:33,841 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:03:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 388 proven. 105 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-07 09:03:34,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:34,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:34,355 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 487 with the following transitions: [2018-11-07 09:03:34,356 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:34,364 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:34,364 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:43,285 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:43,285 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:03:43,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:43,296 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:44,429 INFO L227 lantSequenceWeakener]: Weakened 483 states. On average, predicates are now at 80.32% of their original sizes. [2018-11-07 09:03:44,430 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:44,503 INFO L415 sIntCurrentIteration]: We unified 485 AI predicates to 485 [2018-11-07 09:03:44,504 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:44,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:44,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 09:03:44,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:44,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:03:44,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:03:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:03:44,505 INFO L87 Difference]: Start difference. First operand 2101 states and 3051 transitions. Second operand 9 states. [2018-11-07 09:04:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:12,152 INFO L93 Difference]: Finished difference Result 4544 states and 6813 transitions. [2018-11-07 09:04:12,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:04:12,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 486 [2018-11-07 09:04:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:12,167 INFO L225 Difference]: With dead ends: 4544 [2018-11-07 09:04:12,167 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 09:04:12,176 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 492 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:04:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 09:04:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2801. [2018-11-07 09:04:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2018-11-07 09:04:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3957 transitions. [2018-11-07 09:04:12,250 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3957 transitions. Word has length 486 [2018-11-07 09:04:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:12,251 INFO L480 AbstractCegarLoop]: Abstraction has 2801 states and 3957 transitions. [2018-11-07 09:04:12,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:04:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3957 transitions. [2018-11-07 09:04:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-11-07 09:04:12,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:12,263 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:12,264 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:12,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash 172335287, now seen corresponding path program 1 times [2018-11-07 09:04:12,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:12,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:12,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:12,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:12,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 390 proven. 311 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-07 09:04:13,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:13,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:13,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 554 with the following transitions: [2018-11-07 09:04:13,400 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:13,407 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:13,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:18,599 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:18,599 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:18,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:18,630 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:18,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:18,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:18,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:18,641 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:18,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 09:04:19,299 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 09:04:19,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:19,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-11-07 09:04:19,979 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:19,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 09:04:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 09:04:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:04:19,983 INFO L87 Difference]: Start difference. First operand 2801 states and 3957 transitions. Second operand 16 states. [2018-11-07 09:04:20,421 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 18 [2018-11-07 09:04:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:33,905 INFO L93 Difference]: Finished difference Result 7603 states and 11581 transitions. [2018-11-07 09:04:33,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-11-07 09:04:33,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 553 [2018-11-07 09:04:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:33,937 INFO L225 Difference]: With dead ends: 7603 [2018-11-07 09:04:33,937 INFO L226 Difference]: Without dead ends: 5176 [2018-11-07 09:04:33,967 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1143 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1184, Invalid=4668, Unknown=0, NotChecked=0, Total=5852 [2018-11-07 09:04:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2018-11-07 09:04:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 5065. [2018-11-07 09:04:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5065 states. [2018-11-07 09:04:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 6884 transitions. [2018-11-07 09:04:34,114 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 6884 transitions. Word has length 553 [2018-11-07 09:04:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:34,115 INFO L480 AbstractCegarLoop]: Abstraction has 5065 states and 6884 transitions. [2018-11-07 09:04:34,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 09:04:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 6884 transitions. [2018-11-07 09:04:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-11-07 09:04:34,131 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:34,131 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:34,132 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:34,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:34,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2116825921, now seen corresponding path program 1 times [2018-11-07 09:04:34,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:34,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:34,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:34,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:34,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:35,493 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:04:36,021 WARN L179 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 09:04:36,297 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-11-07 09:04:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 514 proven. 447 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-07 09:04:36,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:36,902 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:36,902 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 560 with the following transitions: [2018-11-07 09:04:36,902 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:36,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:36,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:48,178 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:48,179 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:48,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:48,187 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:48,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:48,187 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:48,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:48,198 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:48,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 844 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-11-07 09:04:48,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:49,373 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 09:04:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 508 proven. 105 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2018-11-07 09:04:49,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:49,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 09:04:49,887 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:49,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:04:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:04:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:04:49,891 INFO L87 Difference]: Start difference. First operand 5065 states and 6884 transitions. Second operand 17 states. [2018-11-07 09:04:51,781 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2018-11-07 09:04:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:56,901 INFO L93 Difference]: Finished difference Result 11200 states and 16020 transitions. [2018-11-07 09:04:56,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 09:04:56,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 559 [2018-11-07 09:04:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:56,934 INFO L225 Difference]: With dead ends: 11200 [2018-11-07 09:04:56,934 INFO L226 Difference]: Without dead ends: 5392 [2018-11-07 09:04:56,972 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1129 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 09:04:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2018-11-07 09:04:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5245. [2018-11-07 09:04:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5245 states. [2018-11-07 09:04:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 6179 transitions. [2018-11-07 09:04:57,098 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 6179 transitions. Word has length 559 [2018-11-07 09:04:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:57,099 INFO L480 AbstractCegarLoop]: Abstraction has 5245 states and 6179 transitions. [2018-11-07 09:04:57,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:04:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 6179 transitions. [2018-11-07 09:04:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2018-11-07 09:04:57,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:57,116 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 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] [2018-11-07 09:04:57,117 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:57,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1538542491, now seen corresponding path program 1 times [2018-11-07 09:04:57,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:57,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:57,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:57,118 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 09:04:57,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:57,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:57,728 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 694 with the following transitions: [2018-11-07 09:04:57,728 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:57,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:57,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:03,436 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:03,436 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:03,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:03,439 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:03,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:03,439 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:05:03,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:03,451 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:03,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 958 proven. 2 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-11-07 09:05:03,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 09:05:04,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:04,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:05:04,362 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:04,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:05:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:05:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:05:04,364 INFO L87 Difference]: Start difference. First operand 5245 states and 6179 transitions. Second operand 7 states. [2018-11-07 09:05:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:07,113 INFO L93 Difference]: Finished difference Result 16541 states and 23046 transitions. [2018-11-07 09:05:07,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:05:07,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 693 [2018-11-07 09:05:07,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:07,205 INFO L225 Difference]: With dead ends: 16541 [2018-11-07 09:05:07,206 INFO L226 Difference]: Without dead ends: 11196 [2018-11-07 09:05:07,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1387 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:05:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2018-11-07 09:05:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 10845. [2018-11-07 09:05:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10845 states. [2018-11-07 09:05:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10845 states to 10845 states and 12971 transitions. [2018-11-07 09:05:07,584 INFO L78 Accepts]: Start accepts. Automaton has 10845 states and 12971 transitions. Word has length 693 [2018-11-07 09:05:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:07,585 INFO L480 AbstractCegarLoop]: Abstraction has 10845 states and 12971 transitions. [2018-11-07 09:05:07,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:05:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10845 states and 12971 transitions. [2018-11-07 09:05:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-11-07 09:05:07,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:07,610 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:07,610 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:07,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:07,611 INFO L82 PathProgramCache]: Analyzing trace with hash -117231020, now seen corresponding path program 1 times [2018-11-07 09:05:07,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:07,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:07,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:07,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:07,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 553 proven. 134 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:05:08,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:08,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:08,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 701 with the following transitions: [2018-11-07 09:05:08,513 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:08,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:08,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:14,144 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:14,144 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:14,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:14,227 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:14,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:14,227 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:05:14,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:14,237 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:14,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 972 proven. 2 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-11-07 09:05:14,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:15,171 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:05:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 553 proven. 134 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:05:15,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:15,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:05:15,604 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:15,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:05:15,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:05:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:05:15,605 INFO L87 Difference]: Start difference. First operand 10845 states and 12971 transitions. Second operand 7 states. Received shutdown request... [2018-11-07 09:05:15,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 09:05:15,960 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:05:15,965 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:05:15,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:05:15 BoogieIcfgContainer [2018-11-07 09:05:15,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:05:15,966 INFO L168 Benchmark]: Toolchain (without parser) took 231334.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -638.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:05:15,967 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. [2018-11-07 09:05:15,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:15,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 173.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:15,969 INFO L168 Benchmark]: Boogie Preprocessor took 117.96 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:05:15,970 INFO L168 Benchmark]: RCFGBuilder took 3891.62 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:15,971 INFO L168 Benchmark]: TraceAbstraction took 226382.71 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -6.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 09:05:15,975 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 763.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 173.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.96 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3891.62 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226382.71 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -6.5 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: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (10845states) and FLOYD_HOARE automaton (currently 5 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (106 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.3s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 149.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1513 SDtfs, 18831 SDslu, 2447 SDs, 0 SdLazy, 20530 SolverSat, 4342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 6794 GetRequests, 6583 SyntacticMatches, 8 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10845occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 48.4s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9972892035628812 AbsIntWeakeningRatio, 0.08661926308985132 AbsIntAvgWeakeningVarsNumRemoved, 16.131221719457013 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 641 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 6882 NumberOfCodeBlocks, 6882 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 9368 ConstructedInterpolants, 0 QuantifiedInterpolants, 21175606 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3661 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 13935/15976 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown