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_label16_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:02:20,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:02:20,600 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:02:20,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:02:20,621 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:02:20,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:02:20,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:02:20,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:02:20,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:02:20,632 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:02:20,633 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:02:20,634 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:02:20,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:02:20,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:02:20,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:02:20,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:02:20,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:02:20,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:02:20,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:02:20,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:02:20,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:02:20,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:02:20,665 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:02:20,678 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 [2018-10-27 03:02:20,698 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:02:20,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:02:20,699 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:02:20,699 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:02:20,700 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:02:20,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:02:20,700 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:02:20,700 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:02:20,701 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:02:20,701 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:02:20,701 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:02:20,701 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:02:20,702 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:02:20,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:02:20,702 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:02:20,702 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:02:20,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:02:20,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:02:20,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:02:20,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:02:20,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:02:20,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:02:20,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:02:20,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:02:20,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:02:20,705 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:02:20,705 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:02:20,705 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:02:20,705 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:02:20,705 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:02:20,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:02:20,706 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:02:20,706 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:02:20,706 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:02:20,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:02:20,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:02:20,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:02:20,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:02:20,782 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:02:20,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label16_true-unreach-call_false-termination.c [2018-10-27 03:02:20,849 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ca4a9178/8e28bf4a3a0a410687637efe3142b606/FLAG7c40147d7 [2018-10-27 03:02:21,396 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:02:21,397 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label16_true-unreach-call_false-termination.c [2018-10-27 03:02:21,422 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ca4a9178/8e28bf4a3a0a410687637efe3142b606/FLAG7c40147d7 [2018-10-27 03:02:21,445 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ca4a9178/8e28bf4a3a0a410687637efe3142b606 [2018-10-27 03:02:21,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:02:21,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:02:21,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:02:21,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:02:21,466 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:02:21,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:21" (1/1) ... [2018-10-27 03:02:21,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce5dd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:21, skipping insertion in model container [2018-10-27 03:02:21,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:21" (1/1) ... [2018-10-27 03:02:21,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:02:21,569 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:02:22,115 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:02:22,121 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:02:22,273 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:02:22,294 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:02:22,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22 WrapperNode [2018-10-27 03:02:22,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:02:22,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:02:22,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:02:22,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:02:22,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:02:22,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:02:22,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:02:22,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:02:22,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... [2018-10-27 03:02:22,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:02:22,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:02:22,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:02:22,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:02:22,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:02:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:02:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:02:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:02:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:02:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:02:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:02:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:02:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:02:26,355 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:02:26,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:26 BoogieIcfgContainer [2018-10-27 03:02:26,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:02:26,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:02:26,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:02:26,363 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:02:26,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:02:21" (1/3) ... [2018-10-27 03:02:26,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e80f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:26, skipping insertion in model container [2018-10-27 03:02:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:22" (2/3) ... [2018-10-27 03:02:26,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e80f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:26, skipping insertion in model container [2018-10-27 03:02:26,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:26" (3/3) ... [2018-10-27 03:02:26,369 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label16_true-unreach-call_false-termination.c [2018-10-27 03:02:26,379 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:02:26,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:02:26,405 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:02:26,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:02:26,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:02:26,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:02:26,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:02:26,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:02:26,445 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:02:26,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:02:26,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:02:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:02:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 03:02:26,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:26,485 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] [2018-10-27 03:02:26,487 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:26,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:26,495 INFO L82 PathProgramCache]: Analyzing trace with hash -31911287, now seen corresponding path program 1 times [2018-10-27 03:02:26,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:26,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:26,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:26,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:26,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:27,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:27,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:02:27,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:27,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:02:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:02:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:02:27,077 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 03:02:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:28,718 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 03:02:28,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:02:28,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-10-27 03:02:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:28,740 INFO L225 Difference]: With dead ends: 691 [2018-10-27 03:02:28,740 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 03:02:28,747 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 [2018-10-27 03:02:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 03:02:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 03:02:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 03:02:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-27 03:02:28,849 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 53 [2018-10-27 03:02:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:28,850 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-27 03:02:28,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:02:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-27 03:02:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 03:02:28,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:28,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:28,868 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:28,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1819744651, now seen corresponding path program 1 times [2018-10-27 03:02:28,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:28,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:28,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:28,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:28,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:29,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:29,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:02:29,282 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:29,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:02:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:02:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:02:29,285 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-27 03:02:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:35,256 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-27 03:02:35,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:02:35,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-27 03:02:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:35,286 INFO L225 Difference]: With dead ends: 1416 [2018-10-27 03:02:35,286 INFO L226 Difference]: Without dead ends: 988 [2018-10-27 03:02:35,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:02:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-27 03:02:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-27 03:02:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-27 03:02:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-27 03:02:35,363 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 130 [2018-10-27 03:02:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:35,364 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-27 03:02:35,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:02:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-27 03:02:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 03:02:35,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:35,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:35,372 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:35,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1183375861, now seen corresponding path program 1 times [2018-10-27 03:02:35,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:35,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:35,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:35,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:35,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:35,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:35,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:02:35,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:35,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:02:35,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:02:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:02:35,811 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-27 03:02:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:40,089 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-27 03:02:40,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:02:40,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-10-27 03:02:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:40,109 INFO L225 Difference]: With dead ends: 2353 [2018-10-27 03:02:40,109 INFO L226 Difference]: Without dead ends: 1386 [2018-10-27 03:02:40,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:02:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-27 03:02:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-27 03:02:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-27 03:02:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-27 03:02:40,196 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 194 [2018-10-27 03:02:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:40,197 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-27 03:02:40,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:02:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-27 03:02:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 03:02:40,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:40,205 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:40,205 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:40,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -968390828, now seen corresponding path program 1 times [2018-10-27 03:02:40,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:40,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:40,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:40,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:40,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:02:40,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:02:40,482 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-27 03:02:40,484 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], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:02:40,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:02:40,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:02:42,260 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:02:42,262 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:02:42,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:42,304 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:02:44,088 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 78.14% of their original sizes. [2018-10-27 03:02:44,088 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:02:44,390 INFO L415 sIntCurrentIteration]: We unified 213 AI predicates to 213 [2018-10-27 03:02:44,390 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:02:44,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:02:44,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:02:44,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:44,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:02:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:02:44,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:02:44,393 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-27 03:02:47,411 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:03:17,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:17,526 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-27 03:03:17,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:03:17,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2018-10-27 03:03:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:17,536 INFO L225 Difference]: With dead ends: 2883 [2018-10-27 03:03:17,537 INFO L226 Difference]: Without dead ends: 1537 [2018-10-27 03:03:17,542 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:03:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-27 03:03:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-27 03:03:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-27 03:03:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-27 03:03:17,596 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 214 [2018-10-27 03:03:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:17,596 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-27 03:03:17,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:03:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-27 03:03:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-27 03:03:17,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:17,604 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:03:17,604 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:17,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1410013698, now seen corresponding path program 1 times [2018-10-27 03:03:17,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:17,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:17,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:17,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:17,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 225 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:03:18,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:03:18,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:03:18,459 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 300 with the following transitions: [2018-10-27 03:03:18,460 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], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:03:18,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:03:18,465 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:03:21,324 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:03:21,324 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:03:21,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:21,331 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:03:24,581 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 77.88% of their original sizes. [2018-10-27 03:03:24,582 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:03:47,265 INFO L415 sIntCurrentIteration]: We unified 298 AI predicates to 298 [2018-10-27 03:03:47,265 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:03:47,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:03:47,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-27 03:03:47,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:47,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:03:47,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:03:47,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:03:47,269 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 18 states. [2018-10-27 03:04:59,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:06:24,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 03:06:24,075 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:06:24,080 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:06:24,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:06:24 BoogieIcfgContainer [2018-10-27 03:06:24,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:06:24,081 INFO L168 Benchmark]: Toolchain (without parser) took 242622.73 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 624.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,083 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:06:24,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.60 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,085 INFO L168 Benchmark]: Boogie Preprocessor took 101.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,086 INFO L168 Benchmark]: RCFGBuilder took 3697.65 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: 123.1 MB). Peak memory consumption was 123.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,087 INFO L168 Benchmark]: TraceAbstraction took 237721.47 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 529.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:24,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.60 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3697.65 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: 123.1 MB). Peak memory consumption was 123.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237721.47 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 529.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2046 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 201.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 641 SDtfs, 4818 SDslu, 758 SDs, 0 SdLazy, 6322 SolverSat, 1069 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 81.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 542 GetRequests, 477 SyntacticMatches, 23 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 24.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952175331121129 AbsIntWeakeningRatio, 0.11350293542074363 AbsIntAvgWeakeningVarsNumRemoved, 550.7729941291585 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 885 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 489/637 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown