java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:41:00,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:41:00,652 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:41:00,670 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:41:00,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:41:00,671 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:41:00,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:41:00,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:41:00,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:41:00,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:41:00,688 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:41:00,688 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:41:00,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:41:00,690 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:41:00,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:41:00,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:41:00,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:41:00,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:41:00,708 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:41:00,709 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:41:00,712 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:41:00,714 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:41:00,717 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:41:00,735 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 18:41:00,755 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:41:00,755 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:41:00,756 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:41:00,756 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:41:00,756 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:41:00,757 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:41:00,757 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:41:00,757 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:41:00,757 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:41:00,757 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:41:00,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:41:00,758 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:41:00,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:41:00,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:41:00,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:41:00,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:41:00,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:41:00,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:41:00,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:41:00,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:41:00,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:41:00,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:41:00,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:41:00,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:41:00,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:41:00,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:41:00,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:41:00,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:41:00,762 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:41:00,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:41:00,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:41:00,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:41:00,763 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:41:00,763 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:41:00,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:41:00,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:41:00,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:41:00,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:41:00,833 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:41:00,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40_false-unreach-call.c [2018-10-24 18:41:00,903 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0964c596d/2b31c85e423543778fe866f2ffe3dd95/FLAGdac7f76bb [2018-10-24 18:41:01,566 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:41:01,567 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label40_false-unreach-call.c [2018-10-24 18:41:01,588 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0964c596d/2b31c85e423543778fe866f2ffe3dd95/FLAGdac7f76bb [2018-10-24 18:41:01,606 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0964c596d/2b31c85e423543778fe866f2ffe3dd95 [2018-10-24 18:41:01,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:41:01,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:41:01,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:01,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:41:01,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:41:01,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:01" (1/1) ... [2018-10-24 18:41:01,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccbb6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:01, skipping insertion in model container [2018-10-24 18:41:01,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:01" (1/1) ... [2018-10-24 18:41:01,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:41:01,733 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:41:02,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:02,544 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:41:02,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:02,866 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:41:02,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02 WrapperNode [2018-10-24 18:41:02,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:02,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:02,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:41:02,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:41:02,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:02,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:03,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:41:03,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:41:03,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:41:03,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (1/1) ... [2018-10-24 18:41:03,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:41:03,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:41:03,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:41:03,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:41:03,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (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 18:41:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:41:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:41:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:41:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:41:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:41:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:41:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:41:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:41:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:41:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:41:11,319 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:41:11,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:11 BoogieIcfgContainer [2018-10-24 18:41:11,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:41:11,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:41:11,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:41:11,327 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:41:11,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:41:01" (1/3) ... [2018-10-24 18:41:11,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e75f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:11, skipping insertion in model container [2018-10-24 18:41:11,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:02" (2/3) ... [2018-10-24 18:41:11,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e75f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:11, skipping insertion in model container [2018-10-24 18:41:11,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:11" (3/3) ... [2018-10-24 18:41:11,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label40_false-unreach-call.c [2018-10-24 18:41:11,341 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:41:11,351 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:41:11,370 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:41:11,411 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:41:11,411 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:41:11,411 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:41:11,411 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:41:11,411 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:41:11,412 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:41:11,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:41:11,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:41:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:41:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 18:41:11,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:11,461 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] [2018-10-24 18:41:11,463 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:11,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1913996417, now seen corresponding path program 1 times [2018-10-24 18:41:11,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:11,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:11,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:11,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:11,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:11,985 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 18:41:11,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:11,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:41:11,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:12,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:41:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:41:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:41:12,019 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 18:41:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:18,496 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-24 18:41:18,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:41:18,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-24 18:41:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:18,526 INFO L225 Difference]: With dead ends: 1501 [2018-10-24 18:41:18,527 INFO L226 Difference]: Without dead ends: 1057 [2018-10-24 18:41:18,537 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 [2018-10-24 18:41:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-24 18:41:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-24 18:41:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:41:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-24 18:41:18,642 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 33 [2018-10-24 18:41:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:18,642 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-24 18:41:18,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:41:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-24 18:41:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 18:41:18,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:18,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:18,653 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:18,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1976109109, now seen corresponding path program 1 times [2018-10-24 18:41:18,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:18,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:18,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:18,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:18,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:19,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:19,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:41:19,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:19,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:41:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:41:19,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:41:19,046 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 5 states. [2018-10-24 18:41:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:34,839 INFO L93 Difference]: Finished difference Result 2390 states and 3583 transitions. [2018-10-24 18:41:34,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:41:34,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2018-10-24 18:41:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:34,856 INFO L225 Difference]: With dead ends: 2390 [2018-10-24 18:41:34,856 INFO L226 Difference]: Without dead ends: 1652 [2018-10-24 18:41:34,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:41:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2018-10-24 18:41:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1644. [2018-10-24 18:41:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2018-10-24 18:41:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2399 transitions. [2018-10-24 18:41:34,934 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2399 transitions. Word has length 103 [2018-10-24 18:41:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:34,935 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 2399 transitions. [2018-10-24 18:41:34,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:41:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2399 transitions. [2018-10-24 18:41:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 18:41:34,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:34,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:34,939 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:34,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:34,940 INFO L82 PathProgramCache]: Analyzing trace with hash -863823824, now seen corresponding path program 1 times [2018-10-24 18:41:34,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:34,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:34,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:34,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:34,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:35,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:35,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:41:35,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:35,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:41:35,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:41:35,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:41:35,248 INFO L87 Difference]: Start difference. First operand 1644 states and 2399 transitions. Second operand 6 states. [2018-10-24 18:41:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:41,440 INFO L93 Difference]: Finished difference Result 4245 states and 6731 transitions. [2018-10-24 18:41:41,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:41:41,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 18:41:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:41,462 INFO L225 Difference]: With dead ends: 4245 [2018-10-24 18:41:41,462 INFO L226 Difference]: Without dead ends: 2916 [2018-10-24 18:41:41,472 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 18:41:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2018-10-24 18:41:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2869. [2018-10-24 18:41:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2018-10-24 18:41:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4001 transitions. [2018-10-24 18:41:41,586 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4001 transitions. Word has length 108 [2018-10-24 18:41:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:41,587 INFO L481 AbstractCegarLoop]: Abstraction has 2869 states and 4001 transitions. [2018-10-24 18:41:41,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:41:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4001 transitions. [2018-10-24 18:41:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 18:41:41,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:41,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:41,597 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:41,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1225473988, now seen corresponding path program 1 times [2018-10-24 18:41:41,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:41,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:41,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:41,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:41,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:41,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:41,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:41:41,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:41,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:41:41,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:41:41,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:41:41,848 INFO L87 Difference]: Start difference. First operand 2869 states and 4001 transitions. Second operand 4 states. [2018-10-24 18:41:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:47,519 INFO L93 Difference]: Finished difference Result 7280 states and 10700 transitions. [2018-10-24 18:41:47,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:41:47,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-24 18:41:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:47,549 INFO L225 Difference]: With dead ends: 7280 [2018-10-24 18:41:47,549 INFO L226 Difference]: Without dead ends: 4726 [2018-10-24 18:41:47,565 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 18:41:47,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-10-24 18:41:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4723. [2018-10-24 18:41:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4723 states. [2018-10-24 18:41:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6423 transitions. [2018-10-24 18:41:47,712 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6423 transitions. Word has length 114 [2018-10-24 18:41:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:47,713 INFO L481 AbstractCegarLoop]: Abstraction has 4723 states and 6423 transitions. [2018-10-24 18:41:47,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:41:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6423 transitions. [2018-10-24 18:41:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 18:41:47,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:47,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:47,717 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:47,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1496606729, now seen corresponding path program 1 times [2018-10-24 18:41:47,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:47,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:47,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:47,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:47,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:48,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:41:48,573 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:41:48,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 130 with the following transitions: [2018-10-24 18:41:48,578 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:41:48,683 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:41:48,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:41:51,009 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:41:58,995 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:41:58,997 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:41:59,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:59,017 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:41:59,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:41:59,018 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:41:59,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:59,029 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:41:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:59,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:41:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:59,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:41:59,587 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 18:42:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:00,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 18:42:00,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-24 18:42:00,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:00,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:42:00,481 INFO L87 Difference]: Start difference. First operand 4723 states and 6423 transitions. Second operand 6 states. [2018-10-24 18:42:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:09,526 INFO L93 Difference]: Finished difference Result 15667 states and 22515 transitions. [2018-10-24 18:42:09,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 18:42:09,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 18:42:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:09,602 INFO L225 Difference]: With dead ends: 15667 [2018-10-24 18:42:09,602 INFO L226 Difference]: Without dead ends: 11259 [2018-10-24 18:42:09,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:42:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2018-10-24 18:42:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 11208. [2018-10-24 18:42:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11208 states. [2018-10-24 18:42:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 15424 transitions. [2018-10-24 18:42:09,913 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 15424 transitions. Word has length 129 [2018-10-24 18:42:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:09,914 INFO L481 AbstractCegarLoop]: Abstraction has 11208 states and 15424 transitions. [2018-10-24 18:42:09,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 15424 transitions. [2018-10-24 18:42:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 18:42:09,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:09,924 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:42:09,924 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:09,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:09,925 INFO L82 PathProgramCache]: Analyzing trace with hash -108935395, now seen corresponding path program 1 times [2018-10-24 18:42:09,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:09,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:09,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:09,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:09,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:10,466 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 18:42:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:42:10,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:42:10,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:42:10,576 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2018-10-24 18:42:10,576 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:42:10,582 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:42:10,582 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:42:11,553 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:42:11,553 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:42:11,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:11,561 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:42:13,015 INFO L232 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 77.75% of their original sizes. [2018-10-24 18:42:13,015 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:42:13,397 INFO L413 sIntCurrentIteration]: We have 192 unified AI predicates [2018-10-24 18:42:13,398 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:42:13,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:42:13,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:42:13,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:13,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:42:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:42:13,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:42:13,400 INFO L87 Difference]: Start difference. First operand 11208 states and 15424 transitions. Second operand 7 states. [2018-10-24 18:42:16,232 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:43:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:05,004 INFO L93 Difference]: Finished difference Result 22104 states and 30504 transitions. [2018-10-24 18:43:05,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:05,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2018-10-24 18:43:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:05,053 INFO L225 Difference]: With dead ends: 22104 [2018-10-24 18:43:05,053 INFO L226 Difference]: Without dead ends: 11210 [2018-10-24 18:43:05,096 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:43:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2018-10-24 18:43:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 11208. [2018-10-24 18:43:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11208 states. [2018-10-24 18:43:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 15400 transitions. [2018-10-24 18:43:05,349 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 15400 transitions. Word has length 193 [2018-10-24 18:43:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:05,349 INFO L481 AbstractCegarLoop]: Abstraction has 11208 states and 15400 transitions. [2018-10-24 18:43:05,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:43:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 15400 transitions. [2018-10-24 18:43:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-24 18:43:05,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:05,354 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:43:05,355 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:05,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash -679583370, now seen corresponding path program 1 times [2018-10-24 18:43:05,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:05,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:05,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:05,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:05,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 53 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:43:05,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:05,962 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:43:05,962 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-24 18:43:05,962 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:43:05,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:43:05,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:43:07,456 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:43:13,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:43:13,631 INFO L272 AbstractInterpreter]: Visited 105 different actions 301 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:43:13,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:13,639 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:43:13,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:13,639 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:43:13,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:13,648 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:43:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:13,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:43:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-24 18:43:13,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:43:14,058 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 18:43:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-24 18:43:14,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 18:43:14,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-10-24 18:43:14,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:14,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:43:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:43:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:43:14,504 INFO L87 Difference]: Start difference. First operand 11208 states and 15400 transitions. Second operand 5 states. [2018-10-24 18:43:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:19,088 INFO L93 Difference]: Finished difference Result 26187 states and 37860 transitions. [2018-10-24 18:43:19,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 18:43:19,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2018-10-24 18:43:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:19,156 INFO L225 Difference]: With dead ends: 26187 [2018-10-24 18:43:19,156 INFO L226 Difference]: Without dead ends: 15293 [2018-10-24 18:43:19,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 402 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:43:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15293 states. [2018-10-24 18:43:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15293 to 14737. [2018-10-24 18:43:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14737 states. [2018-10-24 18:43:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14737 states to 14737 states and 19227 transitions. [2018-10-24 18:43:19,519 INFO L78 Accepts]: Start accepts. Automaton has 14737 states and 19227 transitions. Word has length 202 [2018-10-24 18:43:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:19,519 INFO L481 AbstractCegarLoop]: Abstraction has 14737 states and 19227 transitions. [2018-10-24 18:43:19,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:43:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14737 states and 19227 transitions. [2018-10-24 18:43:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 18:43:19,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:19,534 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:43:19,535 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:19,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:19,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1492083347, now seen corresponding path program 1 times [2018-10-24 18:43:19,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:19,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:19,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:19,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:19,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 150 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:43:20,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:20,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:43:20,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-24 18:43:20,292 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:43:20,300 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:43:20,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:43:21,442 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:43:27,800 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:43:27,800 INFO L272 AbstractInterpreter]: Visited 106 different actions 304 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:43:27,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:27,809 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:43:27,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:27,809 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:43:27,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:27,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:43:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:27,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:43:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 264 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 18:43:28,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:43:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 88 proven. 224 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:43:28,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:43:28,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2018-10-24 18:43:28,630 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:43:28,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 18:43:28,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 18:43:28,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-10-24 18:43:28,632 INFO L87 Difference]: Start difference. First operand 14737 states and 19227 transitions. Second operand 14 states. [2018-10-24 18:43:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:56,634 INFO L93 Difference]: Finished difference Result 33370 states and 43843 transitions. [2018-10-24 18:43:56,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 18:43:56,639 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 289 [2018-10-24 18:43:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:56,711 INFO L225 Difference]: With dead ends: 33370 [2018-10-24 18:43:56,711 INFO L226 Difference]: Without dead ends: 17751 [2018-10-24 18:43:56,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2018-10-24 18:43:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2018-10-24 18:43:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 17603. [2018-10-24 18:43:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17603 states. [2018-10-24 18:43:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 23007 transitions. [2018-10-24 18:43:57,177 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 23007 transitions. Word has length 289 [2018-10-24 18:43:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:57,177 INFO L481 AbstractCegarLoop]: Abstraction has 17603 states and 23007 transitions. [2018-10-24 18:43:57,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 18:43:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 23007 transitions. [2018-10-24 18:43:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-24 18:43:57,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:57,197 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:43:57,197 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:57,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash 540319480, now seen corresponding path program 1 times [2018-10-24 18:43:57,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:57,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:57,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:57,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:57,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:58,266 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 18:43:58,705 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 18:43:59,022 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 18:43:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 150 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:43:59,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:59,483 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:43:59,483 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-10-24 18:43:59,484 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:43:59,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:43:59,494 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:44:02,937 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:44:26,919 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:44:26,919 INFO L272 AbstractInterpreter]: Visited 191 different actions 744 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:44:26,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:44:26,927 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:44:26,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:44:26,927 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:44:26,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:44:26,935 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:44:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:44:27,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:44:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 264 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 18:44:27,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:44:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 88 proven. 224 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:44:28,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:44:28,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2018-10-24 18:44:28,194 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:44:28,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 18:44:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 18:44:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-24 18:44:28,195 INFO L87 Difference]: Start difference. First operand 17603 states and 23007 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 18:44:44,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 18:44:44,235 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:44:44,241 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:44:44,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:44:44 BoogieIcfgContainer [2018-10-24 18:44:44,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:44:44,242 INFO L168 Benchmark]: Toolchain (without parser) took 222624.50 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,243 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 18:44:44,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1248.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 446.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,247 INFO L168 Benchmark]: Boogie Preprocessor took 222.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,248 INFO L168 Benchmark]: RCFGBuilder took 7783.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 314.8 MB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,249 INFO L168 Benchmark]: TraceAbstraction took 212919.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -721.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:44:44,255 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 1248.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 446.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7783.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 314.8 MB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212919.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -721.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (17603states) and FLOYD_HOARE automaton (currently 29 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (22745 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 212.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 144.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2326 SDtfs, 19918 SDslu, 2442 SDs, 0 SdLazy, 28579 SolverSat, 5660 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 114.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2341 GetRequests, 2213 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17603occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 54.0s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9947444897342996 AbsIntWeakeningRatio, 0.13541666666666666 AbsIntAvgWeakeningVarsNumRemoved, 882.0572916666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1128 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 2539 NumberOfCodeBlocks, 2539 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3516 ConstructedInterpolants, 0 QuantifiedInterpolants, 5525568 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1764 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 1578/2564 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown