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/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:32:00,458 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:32:00,460 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:32:00,477 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:32:00,477 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:32:00,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:32:00,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:32:00,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:32:00,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:32:00,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:32:00,498 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:32:00,499 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:32:00,499 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:32:00,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:32:00,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:32:00,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:32:00,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:32:00,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:32:00,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:32:00,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:32:00,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:32:00,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:32:00,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:32:00,535 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:32:00,535 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:32:00,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:32:00,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:32:00,537 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:32:00,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:32:00,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:32:00,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:32:00,568 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:32:00,568 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:32:00,568 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:32:00,568 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:32:00,569 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:32:00,569 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:32:00,569 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:32:00,569 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:32:00,569 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:32:00,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:32:00,571 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:32:00,571 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:32:00,571 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:32:00,571 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:32:00,571 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:32:00,572 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:32:00,573 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:32:00,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:32:00,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:32:00,574 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:32:00,574 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:32:00,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:32:00,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:32:00,575 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:32:00,575 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:32:00,575 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:32:00,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:32:00,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:32:00,576 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:32:00,576 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:32:00,576 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:32:00,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:32:00,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:32:00,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:32:00,651 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:32:00,651 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:32:00,652 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-24 21:32:00,721 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b289eeb3/efd8fefbef694c21a348af8b93ed4105/FLAGcc2792d01 [2018-10-24 21:32:01,567 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:32:01,568 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-24 21:32:01,613 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b289eeb3/efd8fefbef694c21a348af8b93ed4105/FLAGcc2792d01 [2018-10-24 21:32:01,629 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b289eeb3/efd8fefbef694c21a348af8b93ed4105 [2018-10-24 21:32:01,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:32:01,644 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:32:01,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:32:01,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:32:01,651 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:32:01,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:32:01" (1/1) ... [2018-10-24 21:32:01,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:01, skipping insertion in model container [2018-10-24 21:32:01,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:32:01" (1/1) ... [2018-10-24 21:32:01,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:32:01,832 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:32:03,249 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:32:03,254 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:32:04,017 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:32:04,065 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:32:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04 WrapperNode [2018-10-24 21:32:04,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:32:04,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:32:04,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:32:04,067 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:32:04,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:32:04,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:32:04,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:32:04,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:32:04,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... [2018-10-24 21:32:04,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:32:04,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:32:04,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:32:04,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:32:04,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:32:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:32:05,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:32:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:32:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:32:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:32:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:32:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:32:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:32:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:32:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:32:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:32:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:32:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:32:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:32:15,711 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:32:15,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:32:15 BoogieIcfgContainer [2018-10-24 21:32:15,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:32:15,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:32:15,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:32:15,717 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:32:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:32:01" (1/3) ... [2018-10-24 21:32:15,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a0bd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:32:15, skipping insertion in model container [2018-10-24 21:32:15,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:32:04" (2/3) ... [2018-10-24 21:32:15,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a0bd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:32:15, skipping insertion in model container [2018-10-24 21:32:15,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:32:15" (3/3) ... [2018-10-24 21:32:15,720 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-10-24 21:32:15,731 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:32:15,741 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:32:15,759 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:32:15,806 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:32:15,807 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:32:15,807 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:32:15,807 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:32:15,807 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:32:15,808 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:32:15,808 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:32:15,808 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:32:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:32:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 21:32:15,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:15,859 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] [2018-10-24 21:32:15,863 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:15,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1221067980, now seen corresponding path program 1 times [2018-10-24 21:32:15,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:15,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:15,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:15,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:15,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:16,362 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 21:32:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:16,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:16,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:32:16,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:16,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:32:16,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:32:16,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:16,397 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:32:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:31,392 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 21:32:31,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:32:31,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-24 21:32:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:31,436 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 21:32:31,437 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 21:32:31,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 21:32:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 21:32:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 21:32:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 21:32:31,649 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 42 [2018-10-24 21:32:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:31,650 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 21:32:31,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:32:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 21:32:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 21:32:31,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:31,658 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:31,658 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:31,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 894022032, now seen corresponding path program 1 times [2018-10-24 21:32:31,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:31,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:31,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:31,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:31,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:32,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:32,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:32:32,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:32,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:32:32,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:32:32,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:32:32,044 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 21:32:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:47,243 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 21:32:47,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:32:47,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-24 21:32:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:47,274 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 21:32:47,274 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 21:32:47,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:32:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 21:32:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 21:32:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 21:32:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-10-24 21:32:47,408 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 112 [2018-10-24 21:32:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:47,409 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-10-24 21:32:47,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:32:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-10-24 21:32:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 21:32:47,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:47,413 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:47,413 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:47,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:47,414 INFO L82 PathProgramCache]: Analyzing trace with hash -463864276, now seen corresponding path program 1 times [2018-10-24 21:32:47,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:47,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:47,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:47,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:47,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:47,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:47,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:32:47,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:47,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:32:47,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:32:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:32:47,611 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-10-24 21:32:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:58,010 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-10-24 21:32:58,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:32:58,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 21:32:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:58,053 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 21:32:58,054 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 21:32:58,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:32:58,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 21:32:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 21:32:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 21:32:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-10-24 21:32:58,252 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 114 [2018-10-24 21:32:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:58,253 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-10-24 21:32:58,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:32:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-10-24 21:32:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 21:32:58,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:58,257 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:58,257 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:58,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:58,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1460284852, now seen corresponding path program 1 times [2018-10-24 21:32:58,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:58,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:58,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:58,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:58,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:58,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:58,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:32:58,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:58,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:32:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:32:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:58,438 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-10-24 21:33:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:33:09,443 INFO L93 Difference]: Finished difference Result 27677 states and 43232 transitions. [2018-10-24 21:33:09,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:33:09,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-10-24 21:33:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:33:09,552 INFO L225 Difference]: With dead ends: 27677 [2018-10-24 21:33:09,553 INFO L226 Difference]: Without dead ends: 20508 [2018-10-24 21:33:09,605 INFO L605 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 [2018-10-24 21:33:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-10-24 21:33:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-10-24 21:33:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-10-24 21:33:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29111 transitions. [2018-10-24 21:33:10,138 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29111 transitions. Word has length 158 [2018-10-24 21:33:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:33:10,139 INFO L481 AbstractCegarLoop]: Abstraction has 20471 states and 29111 transitions. [2018-10-24 21:33:10,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:33:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29111 transitions. [2018-10-24 21:33:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-24 21:33:10,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:33:10,152 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:33:10,152 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:33:10,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:33:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1058546082, now seen corresponding path program 1 times [2018-10-24 21:33:10,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:33:10,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:33:10,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:33:10,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:33:10,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:33:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:33:10,516 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:33:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:33:10,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:33:10,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:33:10,907 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-24 21:33:10,910 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2863], [2865], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:33:11,012 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:33:11,012 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:33:18,161 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:33:18,162 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:33:18,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:33:18,175 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:33:23,905 INFO L232 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 71.43% of their original sizes. [2018-10-24 21:33:23,906 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:33:25,417 INFO L413 sIntCurrentIteration]: We have 272 unified AI predicates [2018-10-24 21:33:25,418 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:33:25,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:33:25,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 21:33:25,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:33:25,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:33:25,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:33:25,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:33:25,420 INFO L87 Difference]: Start difference. First operand 20471 states and 29111 transitions. Second operand 11 states. [2018-10-24 21:34:19,455 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:35:46,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:35:46,363 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:35:46,369 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:35:46,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:35:46 BoogieIcfgContainer [2018-10-24 21:35:46,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:35:46,370 INFO L168 Benchmark]: Toolchain (without parser) took 224727.29 ms. Allocated memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.1 GB). Peak memory consumption was 597.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,372 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:35:46,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2420.47 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 573.63 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,374 INFO L168 Benchmark]: Boogie Preprocessor took 291.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,375 INFO L168 Benchmark]: RCFGBuilder took 10780.29 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.7 MB). Peak memory consumption was 654.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,376 INFO L168 Benchmark]: TraceAbstraction took 210656.51 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 364.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:35:46,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2420.47 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 573.63 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 291.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10780.29 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.7 MB). Peak memory consumption was 654.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210656.51 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 364.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (20471states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (6865 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 192.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2218 SDtfs, 11788 SDslu, 1978 SDs, 0 SdLazy, 19912 SolverSat, 5577 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 137.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 305 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20471occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9965837104072395 AbsIntWeakeningRatio, 0.11029411764705882 AbsIntAvgWeakeningVarsNumRemoved, 30.80514705882353 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 379825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 283/285 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown