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/Problem02_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:15:58,651 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:15:58,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:15:58,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:15:58,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:15:58,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:15:58,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:15:58,677 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:15:58,680 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:15:58,681 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:15:58,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:15:58,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:15:58,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:15:58,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:15:58,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:15:58,700 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:15:58,701 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:15:58,708 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:15:58,710 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:15:58,718 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:15:58,719 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:15:58,720 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:15:58,725 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:15:58,734 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 [2018-10-23 21:15:58,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:15:58,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:15:58,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:15:58,752 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:15:58,752 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:15:58,752 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:15:58,752 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:15:58,753 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:15:58,753 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:15:58,753 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:15:58,753 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:15:58,753 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:15:58,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:15:58,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:15:58,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:15:58,755 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:15:58,755 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:15:58,755 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:15:58,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:15:58,756 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:15:58,756 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:15:58,756 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:15:58,756 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:15:58,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:15:58,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:15:58,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:15:58,757 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:15:58,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:15:58,758 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:15:58,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:15:58,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:15:58,758 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:15:58,759 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:15:58,759 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:15:58,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:15:58,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:15:58,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:15:58,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:15:58,853 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:15:58,854 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44_false-unreach-call_false-termination.c [2018-10-23 21:15:58,925 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc06a82ab/0b416c584b214bcaaacd1a5e51a15c38/FLAG53770f0dd [2018-10-23 21:15:59,589 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:15:59,590 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label44_false-unreach-call_false-termination.c [2018-10-23 21:15:59,607 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc06a82ab/0b416c584b214bcaaacd1a5e51a15c38/FLAG53770f0dd [2018-10-23 21:15:59,632 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc06a82ab/0b416c584b214bcaaacd1a5e51a15c38 [2018-10-23 21:15:59,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:15:59,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:15:59,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:15:59,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:15:59,651 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:15:59,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:59" (1/1) ... [2018-10-23 21:15:59,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf5b06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:59, skipping insertion in model container [2018-10-23 21:15:59,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:59" (1/1) ... [2018-10-23 21:15:59,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:15:59,718 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:16:00,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:00,141 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:16:00,261 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:00,280 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:16:00,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00 WrapperNode [2018-10-23 21:16:00,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:16:00,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:00,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:16:00,282 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:16:00,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:00,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:16:00,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:16:00,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:16:00,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:16:00,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:16:00,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:16:00,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:16:00,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (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 [2018-10-23 21:16:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:16:00,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:16:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:16:00,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:16:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:16:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:16:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:16:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:16:04,334 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:16:04,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:04 BoogieIcfgContainer [2018-10-23 21:16:04,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:16:04,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:16:04,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:16:04,349 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:16:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:15:59" (1/3) ... [2018-10-23 21:16:04,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa6ad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:04, skipping insertion in model container [2018-10-23 21:16:04,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00" (2/3) ... [2018-10-23 21:16:04,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa6ad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:04, skipping insertion in model container [2018-10-23 21:16:04,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:04" (3/3) ... [2018-10-23 21:16:04,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label44_false-unreach-call_false-termination.c [2018-10-23 21:16:04,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:16:04,383 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:16:04,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:16:04,456 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:16:04,456 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:16:04,457 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:16:04,457 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:16:04,457 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:16:04,457 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:16:04,457 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:16:04,458 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:16:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 21:16:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 21:16:04,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:04,499 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:16:04,501 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:04,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1845971615, now seen corresponding path program 1 times [2018-10-23 21:16:04,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:04,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:04,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:04,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:04,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:05,095 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:16:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:05,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:05,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:16:05,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:05,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:16:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:16:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:05,265 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 21:16:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:06,602 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 21:16:06,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:16:06,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2018-10-23 21:16:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:06,626 INFO L225 Difference]: With dead ends: 621 [2018-10-23 21:16:06,627 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 21:16:06,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 21:16:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 21:16:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 21:16:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 21:16:06,732 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 95 [2018-10-23 21:16:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:06,733 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 21:16:06,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:16:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 21:16:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 21:16:06,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:06,746 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:06,749 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:06,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1621291506, now seen corresponding path program 1 times [2018-10-23 21:16:06,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:06,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:06,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:06,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:06,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:16:06,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:06,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:16:06,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:16:06,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:06,982 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-23 21:16:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:08,284 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-23 21:16:08,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:16:08,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2018-10-23 21:16:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:08,295 INFO L225 Difference]: With dead ends: 1057 [2018-10-23 21:16:08,296 INFO L226 Difference]: Without dead ends: 681 [2018-10-23 21:16:08,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-23 21:16:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-23 21:16:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-23 21:16:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-23 21:16:08,361 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 104 [2018-10-23 21:16:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:08,361 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-23 21:16:08,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:16:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-23 21:16:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 21:16:08,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:08,368 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:08,368 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:08,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash -822617986, now seen corresponding path program 1 times [2018-10-23 21:16:08,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:08,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:08,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:08,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:08,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:08,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:08,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:16:08,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:08,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:16:08,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:16:08,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:08,576 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 3 states. [2018-10-23 21:16:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:10,089 INFO L93 Difference]: Finished difference Result 1927 states and 3080 transitions. [2018-10-23 21:16:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:16:10,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2018-10-23 21:16:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:10,104 INFO L225 Difference]: With dead ends: 1927 [2018-10-23 21:16:10,104 INFO L226 Difference]: Without dead ends: 1257 [2018-10-23 21:16:10,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2018-10-23 21:16:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2018-10-23 21:16:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2018-10-23 21:16:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1817 transitions. [2018-10-23 21:16:10,205 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1817 transitions. Word has length 110 [2018-10-23 21:16:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:10,206 INFO L481 AbstractCegarLoop]: Abstraction has 1257 states and 1817 transitions. [2018-10-23 21:16:10,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:16:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1817 transitions. [2018-10-23 21:16:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 21:16:10,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:10,213 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:16:10,213 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:10,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash 876342080, now seen corresponding path program 1 times [2018-10-23 21:16:10,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:10,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:10,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:10,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:10,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 21:16:10,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:16:10,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:16:10,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-10-23 21:16:10,405 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [103], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [431], [433], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 21:16:10,525 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:16:10,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:16:20,092 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:16:20,094 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 21:16:20,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:20,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:16:23,107 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 80.93% of their original sizes. [2018-10-23 21:16:23,108 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:16:27,199 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:16:27,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:16:27,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-23 21:16:27,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:27,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 21:16:27,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 21:16:27,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-23 21:16:27,202 INFO L87 Difference]: Start difference. First operand 1257 states and 1817 transitions. Second operand 14 states. [2018-10-23 21:18:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:18:03,079 INFO L93 Difference]: Finished difference Result 2808 states and 4122 transitions. [2018-10-23 21:18:03,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 21:18:03,080 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2018-10-23 21:18:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:18:03,090 INFO L225 Difference]: With dead ends: 2808 [2018-10-23 21:18:03,090 INFO L226 Difference]: Without dead ends: 1557 [2018-10-23 21:18:03,095 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2018-10-23 21:18:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2018-10-23 21:18:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1404. [2018-10-23 21:18:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2018-10-23 21:18:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1972 transitions. [2018-10-23 21:18:03,226 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1972 transitions. Word has length 134 [2018-10-23 21:18:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:18:03,226 INFO L481 AbstractCegarLoop]: Abstraction has 1404 states and 1972 transitions. [2018-10-23 21:18:03,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 21:18:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1972 transitions. [2018-10-23 21:18:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-23 21:18:03,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:18:03,233 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-23 21:18:03,233 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:18:03,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:18:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1049891743, now seen corresponding path program 1 times [2018-10-23 21:18:03,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:18:03,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:18:03,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:18:03,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:18:03,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:18:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:18:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 46 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 21:18:03,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:18:03,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:18:03,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-10-23 21:18:03,455 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [103], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [431], [433], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 21:18:03,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:18:03,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:19:07,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:19:07,199 INFO L272 AbstractInterpreter]: Visited 100 different actions 388 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 21:19:07,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:19:07,206 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:19:11,036 INFO L232 lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 81.34% of their original sizes. [2018-10-23 21:19:11,037 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:19:40,847 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:19:40,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:19:40,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [9] total 30 [2018-10-23 21:19:40,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:19:40,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-23 21:19:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-23 21:19:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-10-23 21:19:40,849 INFO L87 Difference]: Start difference. First operand 1404 states and 1972 transitions. Second operand 23 states. Received shutdown request... [2018-10-23 21:20:19,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 21:20:19,245 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:20:19,253 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:20:19,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:20:19 BoogieIcfgContainer [2018-10-23 21:20:19,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:20:19,255 INFO L168 Benchmark]: Toolchain (without parser) took 259610.35 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 566.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,256 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 21:20:19,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.78 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,259 INFO L168 Benchmark]: Boogie Preprocessor took 85.53 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,260 INFO L168 Benchmark]: RCFGBuilder took 3761.70 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: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,260 INFO L168 Benchmark]: TraceAbstraction took 254916.18 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 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 488.8 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:19,266 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.78 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.53 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3761.70 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: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254916.18 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 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 488.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 436]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 436). Cancelled while BasicCegarLoop was constructing difference of abstraction (1404states) and FLOYD_HOARE automaton (currently 20 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (52 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 254.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 138.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1177 SDtfs, 1654 SDslu, 773 SDs, 0 SdLazy, 2487 SolverSat, 599 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 309 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 45.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1404occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 73.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9929005092048567 AbsIntWeakeningRatio, 0.26811594202898553 AbsIntAvgWeakeningVarsNumRemoved, 1778.213768115942 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 158 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 587 NumberOfCodeBlocks, 587 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 582 ConstructedInterpolants, 0 QuantifiedInterpolants, 185320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 109/128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown