java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:54:18,801 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:54:18,803 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:54:18,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:54:18,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:54:18,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:54:18,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:54:18,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:54:18,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:54:18,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:54:18,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:54:18,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:54:18,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:54:18,836 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:54:18,837 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:54:18,838 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:54:18,839 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:54:18,841 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:54:18,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:54:18,844 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:54:18,845 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:54:18,847 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:54:18,849 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:54:18,849 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:54:18,850 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:54:18,851 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:54:18,852 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:54:18,852 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:54:18,853 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:54:18,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:54:18,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:54:18,856 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:54:18,856 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:54:18,856 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:54:18,857 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:54:18,858 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:54:18,858 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:54:18,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:54:18,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:54:18,876 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:54:18,876 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:54:18,876 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:54:18,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:54:18,876 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:54:18,877 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:54:18,877 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:54:18,877 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:54:18,877 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:54:18,877 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:54:18,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:54:18,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:54:18,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:54:18,879 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:54:18,879 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:54:18,879 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:54:18,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:54:18,880 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:54:18,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:54:18,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:54:18,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:54:18,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:54:18,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:54:18,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:54:18,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:54:18,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:54:18,881 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:54:18,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:54:18,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:54:18,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:54:18,882 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:54:18,882 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:54:18,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:54:18,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:54:18,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:54:18,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:54:18,978 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:54:18,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-10-27 13:54:19,047 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41052600e/02c7ae50cf3f47fbada69881b61fcd9b/FLAG4f50dc775 [2018-10-27 13:54:19,677 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:54:19,681 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-10-27 13:54:19,710 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41052600e/02c7ae50cf3f47fbada69881b61fcd9b/FLAG4f50dc775 [2018-10-27 13:54:19,730 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41052600e/02c7ae50cf3f47fbada69881b61fcd9b [2018-10-27 13:54:19,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:54:19,745 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:54:19,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:54:19,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:54:19,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:54:19,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:54:19" (1/1) ... [2018-10-27 13:54:19,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f0195d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:19, skipping insertion in model container [2018-10-27 13:54:19,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:54:19" (1/1) ... [2018-10-27 13:54:19,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:54:19,865 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:54:20,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:54:20,469 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:54:20,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:54:20,715 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:54:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20 WrapperNode [2018-10-27 13:54:20,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:54:20,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:54:20,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:54:20,717 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:54:20,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:20,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:54:21,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:54:21,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:54:21,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:54:21,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... [2018-10-27 13:54:21,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:54:21,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:54:21,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:54:21,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:54:21,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:54:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:54:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:54:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:54:21,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:54:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:54:21,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:54:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:54:21,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:54:25,696 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:54:25,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:54:25 BoogieIcfgContainer [2018-10-27 13:54:25,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:54:25,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:54:25,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:54:25,702 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:54:25,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:54:19" (1/3) ... [2018-10-27 13:54:25,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e0ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:54:25, skipping insertion in model container [2018-10-27 13:54:25,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:54:20" (2/3) ... [2018-10-27 13:54:25,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e0ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:54:25, skipping insertion in model container [2018-10-27 13:54:25,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:54:25" (3/3) ... [2018-10-27 13:54:25,707 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label30_true-unreach-call.c [2018-10-27 13:54:25,718 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:54:25,734 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:54:25,756 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:54:25,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:54:25,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:54:25,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:54:25,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:54:25,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:54:25,815 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:54:25,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:54:25,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:54:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 13:54:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-27 13:54:25,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:54:25,864 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] [2018-10-27 13:54:25,866 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:54:25,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:25,873 INFO L82 PathProgramCache]: Analyzing trace with hash 814847676, now seen corresponding path program 1 times [2018-10-27 13:54:25,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:54:25,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:25,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:54:25,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:25,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:54:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:54:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:54:26,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:54:26,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 13:54:26,370 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:54:26,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 13:54:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 13:54:26,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:54:26,395 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 13:54:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:54:29,942 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-27 13:54:29,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 13:54:29,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-27 13:54:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:54:29,969 INFO L225 Difference]: With dead ends: 1001 [2018-10-27 13:54:29,969 INFO L226 Difference]: Without dead ends: 702 [2018-10-27 13:54:29,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:54:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-27 13:54:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-27 13:54:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-27 13:54:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-27 13:54:30,077 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 36 [2018-10-27 13:54:30,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:54:30,078 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-27 13:54:30,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 13:54:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-27 13:54:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-27 13:54:30,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:54:30,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:54:30,086 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:54:30,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash -25993205, now seen corresponding path program 1 times [2018-10-27 13:54:30,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:54:30,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:30,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:54:30,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:30,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:54:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:54:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:54:30,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:54:30,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:54:30,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:54:30,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:54:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:54:30,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:54:30,431 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-27 13:54:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:54:35,670 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-27 13:54:35,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:54:35,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-27 13:54:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:54:35,694 INFO L225 Difference]: With dead ends: 2534 [2018-10-27 13:54:35,694 INFO L226 Difference]: Without dead ends: 1841 [2018-10-27 13:54:35,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 13:54:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-27 13:54:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-27 13:54:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-27 13:54:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-27 13:54:35,808 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 109 [2018-10-27 13:54:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:54:35,809 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-27 13:54:35,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:54:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-27 13:54:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 13:54:35,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:54:35,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:54:35,816 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:54:35,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1434902368, now seen corresponding path program 1 times [2018-10-27 13:54:35,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:54:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:35,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:54:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:35,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:54:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:54:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:54:36,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:54:36,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 13:54:36,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:54:36,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 13:54:36,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 13:54:36,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:54:36,144 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-27 13:54:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:54:38,857 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-10-27 13:54:38,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 13:54:38,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-27 13:54:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:54:38,889 INFO L225 Difference]: With dead ends: 4796 [2018-10-27 13:54:38,889 INFO L226 Difference]: Without dead ends: 2987 [2018-10-27 13:54:38,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:54:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-10-27 13:54:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-10-27 13:54:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-10-27 13:54:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-10-27 13:54:39,007 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 110 [2018-10-27 13:54:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:54:39,008 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-10-27 13:54:39,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 13:54:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-10-27 13:54:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 13:54:39,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:54:39,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:54:39,015 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:54:39,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash 579016823, now seen corresponding path program 1 times [2018-10-27 13:54:39,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:54:39,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:39,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:54:39,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:39,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:54:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:54:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:54:39,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:54:39,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:54:39,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:54:39,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:54:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:54:39,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:54:39,579 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-10-27 13:54:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:54:44,104 INFO L93 Difference]: Finished difference Result 11412 states and 20997 transitions. [2018-10-27 13:54:44,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 13:54:44,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-27 13:54:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:54:44,195 INFO L225 Difference]: With dead ends: 11412 [2018-10-27 13:54:44,195 INFO L226 Difference]: Without dead ends: 8448 [2018-10-27 13:54:44,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:54:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-27 13:54:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 7652. [2018-10-27 13:54:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2018-10-27 13:54:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11186 transitions. [2018-10-27 13:54:44,605 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11186 transitions. Word has length 135 [2018-10-27 13:54:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:54:44,606 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 11186 transitions. [2018-10-27 13:54:44,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:54:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11186 transitions. [2018-10-27 13:54:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-27 13:54:44,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:54:44,615 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 13:54:44,615 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:54:44,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1556909905, now seen corresponding path program 1 times [2018-10-27 13:54:44,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:54:44,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:44,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:54:44,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:54:44,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:54:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:54:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:54:45,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:54:45,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:54:45,148 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-10-27 13:54:45,150 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 13:54:45,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:54:45,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:54:45,584 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:54:45,586 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 13:54:45,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:54:45,601 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:54:46,143 INFO L227 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 73.3% of their original sizes. [2018-10-27 13:54:46,144 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:54:46,292 INFO L415 sIntCurrentIteration]: We unified 182 AI predicates to 182 [2018-10-27 13:54:46,292 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:54:46,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:54:46,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 13:54:46,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:54:46,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 13:54:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 13:54:46,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 13:54:46,295 INFO L87 Difference]: Start difference. First operand 7652 states and 11186 transitions. Second operand 7 states. [2018-10-27 13:54:48,391 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown