java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:33:54,790 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:33:54,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:33:54,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:33:54,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:33:54,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:33:54,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:33:54,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:33:54,811 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:33:54,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:33:54,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:33:54,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:33:54,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:33:54,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:33:54,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:33:54,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:33:54,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:33:54,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:33:54,822 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:33:54,823 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:33:54,824 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:33:54,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:33:54,828 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:33:54,843 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:33:54,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:33:54,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:33:54,861 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:33:54,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:33:54,861 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:33:54,861 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:33:54,861 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:33:54,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:33:54,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:33:54,862 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:33:54,862 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:33:54,862 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:33:54,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:33:54,863 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:33:54,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:33:54,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:33:54,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:33:54,864 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:33:54,864 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:33:54,865 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:33:54,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:33:54,865 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:33:54,865 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:33:54,865 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:33:54,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:33:54,866 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:33:54,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:33:54,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:33:54,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:33:54,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:33:54,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:33:54,867 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:33:54,867 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:33:54,867 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:33:54,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:33:54,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:33:54,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:33:54,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:33:54,936 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:33:54,937 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-10-24 01:33:54,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/663fdf45c/270cd8a8c7c64a148836a06a2575a26c/FLAGb1f92b3c6 [2018-10-24 01:33:55,589 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:33:55,590 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-10-24 01:33:55,607 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/663fdf45c/270cd8a8c7c64a148836a06a2575a26c/FLAGb1f92b3c6 [2018-10-24 01:33:55,628 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/663fdf45c/270cd8a8c7c64a148836a06a2575a26c [2018-10-24 01:33:55,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:33:55,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:33:55,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:33:55,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:33:55,655 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:33:55,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:33:55" (1/1) ... [2018-10-24 01:33:55,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d165524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:55, skipping insertion in model container [2018-10-24 01:33:55,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:33:55" (1/1) ... [2018-10-24 01:33:55,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:33:55,742 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:33:56,239 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:33:56,243 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:33:56,403 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:33:56,425 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:33:56,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56 WrapperNode [2018-10-24 01:33:56,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:33:56,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:33:56,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:33:56,428 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:33:56,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:33:56,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:33:56,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:33:56,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:33:56,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (1/1) ... [2018-10-24 01:33:56,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:33:56,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:33:56,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:33:56,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:33:56,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (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 [2018-10-24 01:33:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:33:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:33:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:33:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:33:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:33:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:33:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:33:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:34:00,666 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:34:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:34:00 BoogieIcfgContainer [2018-10-24 01:34:00,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:34:00,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:34:00,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:34:00,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:34:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:33:55" (1/3) ... [2018-10-24 01:34:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c548c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:34:00, skipping insertion in model container [2018-10-24 01:34:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:33:56" (2/3) ... [2018-10-24 01:34:00,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c548c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:34:00, skipping insertion in model container [2018-10-24 01:34:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:34:00" (3/3) ... [2018-10-24 01:34:00,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label17_true-unreach-call_false-termination.c [2018-10-24 01:34:00,688 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:34:00,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:34:00,720 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:34:00,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:34:00,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:34:00,760 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:34:00,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:34:00,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:34:00,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:34:00,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:34:00,761 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:34:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:34:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-24 01:34:00,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:34:00,804 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:34:00,806 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:34:00,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:00,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1535437935, now seen corresponding path program 1 times [2018-10-24 01:34:00,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:34:00,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:00,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:34:00,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:00,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:34:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:34:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:34:01,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:34:01,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:34:01,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:34:01,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:34:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:34:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:34:01,369 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:34:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:34:03,431 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:34:03,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:34:03,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-10-24 01:34:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:34:03,455 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:34:03,455 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:34:03,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:34:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:34:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:34:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:34:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-10-24 01:34:03,550 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 63 [2018-10-24 01:34:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:34:03,551 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-10-24 01:34:03,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:34:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-10-24 01:34:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 01:34:03,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:34:03,561 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:34:03,561 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:34:03,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:03,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1025550080, now seen corresponding path program 1 times [2018-10-24 01:34:03,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:34:03,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:03,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:34:03,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:03,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:34:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:34:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:34:03,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:34:03,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:34:03,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:34:03,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:34:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:34:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:34:03,934 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-10-24 01:34:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:34:06,281 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-10-24 01:34:06,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:34:06,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 01:34:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:34:06,293 INFO L225 Difference]: With dead ends: 1254 [2018-10-24 01:34:06,293 INFO L226 Difference]: Without dead ends: 826 [2018-10-24 01:34:06,297 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 [2018-10-24 01:34:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-10-24 01:34:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-10-24 01:34:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-10-24 01:34:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-10-24 01:34:06,354 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 143 [2018-10-24 01:34:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:34:06,355 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-10-24 01:34:06,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:34:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-10-24 01:34:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 01:34:06,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:34:06,367 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:34:06,368 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:34:06,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1017512645, now seen corresponding path program 1 times [2018-10-24 01:34:06,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:34:06,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:06,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:34:06,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:06,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:34:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:34:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:34:06,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:34:06,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:34:06,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:34:06,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:34:06,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:34:06,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:34:06,689 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-10-24 01:34:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:34:10,029 INFO L93 Difference]: Finished difference Result 1988 states and 3388 transitions. [2018-10-24 01:34:10,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:34:10,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-10-24 01:34:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:34:10,048 INFO L225 Difference]: With dead ends: 1988 [2018-10-24 01:34:10,049 INFO L226 Difference]: Without dead ends: 1182 [2018-10-24 01:34:10,056 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 [2018-10-24 01:34:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-10-24 01:34:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-10-24 01:34:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-10-24 01:34:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1751 transitions. [2018-10-24 01:34:10,122 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1751 transitions. Word has length 176 [2018-10-24 01:34:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:34:10,122 INFO L481 AbstractCegarLoop]: Abstraction has 1182 states and 1751 transitions. [2018-10-24 01:34:10,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:34:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1751 transitions. [2018-10-24 01:34:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-24 01:34:10,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:34:10,130 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:34:10,131 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:34:10,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:10,131 INFO L82 PathProgramCache]: Analyzing trace with hash -234886452, now seen corresponding path program 1 times [2018-10-24 01:34:10,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:34:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:10,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:34:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:10,133 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:34:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:34:10,753 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 01:34:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:34:11,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:34:11,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:34:11,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:34:11,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:34:11,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:34:11,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:34:11,070 INFO L87 Difference]: Start difference. First operand 1182 states and 1751 transitions. Second operand 6 states. [2018-10-24 01:34:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:34:17,597 INFO L93 Difference]: Finished difference Result 3828 states and 5913 transitions. [2018-10-24 01:34:17,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:34:17,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-10-24 01:34:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:34:17,622 INFO L225 Difference]: With dead ends: 3828 [2018-10-24 01:34:17,623 INFO L226 Difference]: Without dead ends: 2652 [2018-10-24 01:34:17,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:34:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2018-10-24 01:34:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2568. [2018-10-24 01:34:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2018-10-24 01:34:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3547 transitions. [2018-10-24 01:34:17,740 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3547 transitions. Word has length 229 [2018-10-24 01:34:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:34:17,741 INFO L481 AbstractCegarLoop]: Abstraction has 2568 states and 3547 transitions. [2018-10-24 01:34:17,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:34:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3547 transitions. [2018-10-24 01:34:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-24 01:34:17,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:34:17,761 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, 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, 2, 2, 2, 2, 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] [2018-10-24 01:34:17,761 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:34:17,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:17,762 INFO L82 PathProgramCache]: Analyzing trace with hash 96321352, now seen corresponding path program 1 times [2018-10-24 01:34:17,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:34:17,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:17,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:34:17,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:34:17,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:34:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:34:18,360 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:34:18,553 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:34:19,240 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 01:34:19,506 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-24 01:34:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 256 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:34:20,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:34:20,052 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:34:20,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-10-24 01:34:20,056 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], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [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], [639], [643], [647], [651], [655], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:34:20,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:34:20,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:34:24,247 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:34:32,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:34:32,312 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:34:32,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:34:32,325 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:34:37,779 INFO L232 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 78.3% of their original sizes. [2018-10-24 01:34:37,779 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:35:14,961 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:35:14,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:35:14,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-24 01:35:14,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:35:14,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 01:35:14,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 01:35:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-10-24 01:35:14,964 INFO L87 Difference]: Start difference. First operand 2568 states and 3547 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 01:37:53,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 01:37:53,000 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:37:53,006 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:37:53,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:37:53 BoogieIcfgContainer [2018-10-24 01:37:53,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:37:53,007 INFO L168 Benchmark]: Toolchain (without parser) took 237363.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 198.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:37:53,008 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:37:53,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.40 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. [2018-10-24 01:37:53,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:37:53,011 INFO L168 Benchmark]: Boogie Preprocessor took 116.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:37:53,012 INFO L168 Benchmark]: RCFGBuilder took 3873.74 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: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:37:53,012 INFO L168 Benchmark]: TraceAbstraction took 232337.81 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:37:53,018 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.40 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 248.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3873.74 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: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232337.81 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (2568states) and FLOYD_HOARE automaton (currently 20 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (2116 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 172.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 519 SDtfs, 4712 SDslu, 446 SDs, 0 SdLazy, 6998 SolverSat, 1265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 452 GetRequests, 364 SyntacticMatches, 45 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 39.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2568occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9965175179400588 AbsIntWeakeningRatio, 0.07766990291262135 AbsIntAvgWeakeningVarsNumRemoved, 445.88592233009706 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1024 NumberOfCodeBlocks, 1024 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1019 ConstructedInterpolants, 0 QuantifiedInterpolants, 2971385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 429/619 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown