java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:32:27,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:32:27,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:32:27,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:32:27,530 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:32:27,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:32:27,533 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:32:27,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:32:27,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:32:27,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:32:27,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:32:27,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:32:27,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:32:27,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:32:27,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:32:27,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:32:27,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:32:27,546 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:32:27,548 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:32:27,550 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:32:27,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:32:27,560 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:32:27,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:32:27,566 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:32:27,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:32:27,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:32:27,573 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:32:27,574 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:32:27,575 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:32:27,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:32:27,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:32:27,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:32:27,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:32:27,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:32:27,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:32:27,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:32:27,583 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:32:27,618 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:32:27,618 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:32:27,619 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:32:27,619 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:32:27,619 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:32:27,619 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:32:27,620 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:32:27,620 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:32:27,620 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:32:27,621 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:32:27,621 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:32:27,621 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:32:27,622 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:32:27,622 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:32:27,622 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:32:27,622 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:32:27,622 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:32:27,623 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:32:27,623 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:32:27,623 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:32:27,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:32:27,623 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:32:27,624 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:32:27,624 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:32:27,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:32:27,624 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:32:27,624 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:32:27,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:32:27,625 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:32:27,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:32:27,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:32:27,625 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:32:27,626 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:32:27,626 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:32:27,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:32:27,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:32:27,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:32:27,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:32:27,709 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:32:27,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-11-07 03:32:27,772 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4214c3f/7e6ec44eac0d4539aa1264175fcd2dfd/FLAG12287599d [2018-11-07 03:32:28,510 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:32:28,512 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-11-07 03:32:28,541 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4214c3f/7e6ec44eac0d4539aa1264175fcd2dfd/FLAG12287599d [2018-11-07 03:32:28,563 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4214c3f/7e6ec44eac0d4539aa1264175fcd2dfd [2018-11-07 03:32:28,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:32:28,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:32:28,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:32:28,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:32:28,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:32:28,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:28" (1/1) ... [2018-11-07 03:32:28,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:28, skipping insertion in model container [2018-11-07 03:32:28,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:28" (1/1) ... [2018-11-07 03:32:28,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:32:28,714 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:32:29,526 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:32:29,531 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:32:29,936 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:32:29,959 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:32:29,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29 WrapperNode [2018-11-07 03:32:29,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:32:29,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:32:29,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:32:29,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:32:29,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:32:30,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:32:30,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:32:30,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:32:30,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:30,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:32:30,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:32:30,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:32:30,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:32:30,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:32:30,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:32:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:32:30,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:32:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:32:30,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:32:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:32:30,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:32:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:32:30,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:32:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:32:30,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:32:37,545 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:32:37,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:32:37 BoogieIcfgContainer [2018-11-07 03:32:37,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:32:37,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:32:37,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:32:37,553 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:32:37,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:32:28" (1/3) ... [2018-11-07 03:32:37,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:32:37, skipping insertion in model container [2018-11-07 03:32:37,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29" (2/3) ... [2018-11-07 03:32:37,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:32:37, skipping insertion in model container [2018-11-07 03:32:37,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:32:37" (3/3) ... [2018-11-07 03:32:37,557 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-11-07 03:32:37,568 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:32:37,579 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:32:37,597 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:32:37,654 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:32:37,655 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:32:37,655 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:32:37,655 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:32:37,655 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:32:37,655 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:32:37,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:32:37,656 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:32:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:32:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 03:32:37,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:37,701 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] [2018-11-07 03:32:37,703 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:37,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash -98869727, now seen corresponding path program 1 times [2018-11-07 03:32:37,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:37,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:37,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:37,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:37,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:38,231 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 03:32:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:38,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:38,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:32:38,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:38,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:32:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:32:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:38,272 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:32:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:44,956 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:32:44,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:32:44,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-07 03:32:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:44,984 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:32:44,985 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:32:44,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:32:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 03:32:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 03:32:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 03:32:45,119 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-11-07 03:32:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:45,120 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 03:32:45,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:32:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 03:32:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 03:32:45,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:45,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:32:45,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:45,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2025595060, now seen corresponding path program 1 times [2018-11-07 03:32:45,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:45,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:45,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:45,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:45,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:45,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:45,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:32:45,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:45,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:32:45,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:32:45,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:32:45,447 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 03:32:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:51,314 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-07 03:32:51,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:32:51,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 03:32:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:51,339 INFO L225 Difference]: With dead ends: 3246 [2018-11-07 03:32:51,339 INFO L226 Difference]: Without dead ends: 2161 [2018-11-07 03:32:51,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:32:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-07 03:32:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-07 03:32:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 03:32:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 03:32:51,462 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 114 [2018-11-07 03:32:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:51,465 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 03:32:51,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:32:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 03:32:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 03:32:51,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:51,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:32:51,472 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:51,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash 565874524, now seen corresponding path program 1 times [2018-11-07 03:32:51,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:51,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:51,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:51,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:51,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:51,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:51,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:32:51,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:51,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:32:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:32:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:51,612 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 03:32:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:56,250 INFO L93 Difference]: Finished difference Result 7952 states and 12482 transitions. [2018-11-07 03:32:56,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:32:56,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-11-07 03:32:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:56,299 INFO L225 Difference]: With dead ends: 7952 [2018-11-07 03:32:56,300 INFO L226 Difference]: Without dead ends: 5844 [2018-11-07 03:32:56,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2018-11-07 03:32:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 5841. [2018-11-07 03:32:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5841 states. [2018-11-07 03:32:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8212 transitions. [2018-11-07 03:32:56,498 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8212 transitions. Word has length 122 [2018-11-07 03:32:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:56,498 INFO L480 AbstractCegarLoop]: Abstraction has 5841 states and 8212 transitions. [2018-11-07 03:32:56,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:32:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8212 transitions. [2018-11-07 03:32:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 03:32:56,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:56,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:32:56,505 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:56,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2101547042, now seen corresponding path program 1 times [2018-11-07 03:32:56,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:56,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:56,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:56,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:56,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:57,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:32:57,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:32:57,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-11-07 03:32:57,086 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:32:57,163 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:32:57,164 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:32:59,755 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:32:59,756 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:32:59,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:59,768 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:33:01,110 INFO L227 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 03:33:01,111 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:33:01,636 INFO L415 sIntCurrentIteration]: We unified 152 AI predicates to 152 [2018-11-07 03:33:01,636 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:33:01,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:33:01,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 03:33:01,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:33:01,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:33:01,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:33:01,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:33:01,639 INFO L87 Difference]: Start difference. First operand 5841 states and 8212 transitions. Second operand 8 states. [2018-11-07 03:33:05,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:34:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:24,066 INFO L93 Difference]: Finished difference Result 11986 states and 16797 transitions. [2018-11-07 03:34:24,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:34:24,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2018-11-07 03:34:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:24,108 INFO L225 Difference]: With dead ends: 11986 [2018-11-07 03:34:24,109 INFO L226 Difference]: Without dead ends: 6151 [2018-11-07 03:34:24,140 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:34:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2018-11-07 03:34:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6149. [2018-11-07 03:34:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2018-11-07 03:34:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8528 transitions. [2018-11-07 03:34:24,322 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8528 transitions. Word has length 153 [2018-11-07 03:34:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:24,322 INFO L480 AbstractCegarLoop]: Abstraction has 6149 states and 8528 transitions. [2018-11-07 03:34:24,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:34:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8528 transitions. [2018-11-07 03:34:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 03:34:24,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:24,329 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:34:24,330 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:24,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:24,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1992816428, now seen corresponding path program 1 times [2018-11-07 03:34:24,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:24,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:24,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:24,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:24,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:34:25,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:34:25,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:34:25,000 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-07 03:34:25,001 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:34:25,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:34:25,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:34:27,683 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:34:35,113 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:34:35,114 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:34:35,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:35,122 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:34:37,365 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 79.04% of their original sizes. [2018-11-07 03:34:37,365 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:35:15,486 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-11-07 03:35:15,486 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:35:15,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:35:15,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-11-07 03:35:15,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:35:15,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 03:35:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 03:35:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 03:35:15,488 INFO L87 Difference]: Start difference. First operand 6149 states and 8528 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 03:36:21,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 03:36:21,752 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:36:21,757 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:36:21,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:36:21 BoogieIcfgContainer [2018-11-07 03:36:21,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:36:21,759 INFO L168 Benchmark]: Toolchain (without parser) took 233182.34 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,760 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-11-07 03:36:21,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1380.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,763 INFO L168 Benchmark]: Boogie Preprocessor took 194.85 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,764 INFO L168 Benchmark]: RCFGBuilder took 7181.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,765 INFO L168 Benchmark]: TraceAbstraction took 224211.29 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -867.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:36:21,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1380.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.85 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7181.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224211.29 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -867.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (6149states) and FLOYD_HOARE automaton (currently 19 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (533 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 224.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 166.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1290 SDtfs, 5251 SDslu, 1030 SDs, 0 SdLazy, 8092 SolverSat, 1728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 429 GetRequests, 311 SyntacticMatches, 77 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 40.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6149occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949547101449275 AbsIntWeakeningRatio, 0.115 AbsIntAvgWeakeningVarsNumRemoved, 670.8175 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 75 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 679 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 674 ConstructedInterpolants, 0 QuantifiedInterpolants, 871851 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 230/266 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown