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/Problem02_label21_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:12:56,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:12:56,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:12:56,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:12:56,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:12:56,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:12:56,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:12:56,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:12:56,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:12:56,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:12:56,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:12:56,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:12:56,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:12:56,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:12:56,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:12:56,740 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:12:56,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:12:56,743 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:12:56,745 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:12:56,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:12:56,747 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:12:56,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:12:56,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:12:56,758 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:12:56,758 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:12:56,759 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:12:56,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:12:56,760 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 01:12:56,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:12:56,787 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:12:56,788 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:12:56,789 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:12:56,789 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:12:56,789 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:12:56,789 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:12:56,789 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:12:56,790 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:12:56,790 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:12:56,790 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:12:56,791 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:12:56,791 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:12:56,792 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:12:56,792 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:12:56,792 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:12:56,792 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:12:56,792 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:12:56,793 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:12:56,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:12:56,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:12:56,795 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:12:56,795 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:12:56,795 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:12:56,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:12:56,796 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:12:56,796 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:12:56,796 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:12:56,796 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:12:56,797 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:12:56,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:12:56,797 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:12:56,797 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:12:56,797 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:12:56,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:12:56,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:12:56,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:12:56,880 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:12:56,880 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:12:56,881 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21_true-unreach-call_false-termination.c [2018-11-07 01:12:56,956 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c786d82e6/21b44f0643fd42fcac2be2f07e05474a/FLAG1d48aa2df [2018-11-07 01:12:57,543 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:12:57,544 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label21_true-unreach-call_false-termination.c [2018-11-07 01:12:57,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c786d82e6/21b44f0643fd42fcac2be2f07e05474a/FLAG1d48aa2df [2018-11-07 01:12:57,592 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c786d82e6/21b44f0643fd42fcac2be2f07e05474a [2018-11-07 01:12:57,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:12:57,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:12:57,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:12:57,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:12:57,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:12:57,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:57" (1/1) ... [2018-11-07 01:12:57,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:57, skipping insertion in model container [2018-11-07 01:12:57,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:57" (1/1) ... [2018-11-07 01:12:57,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:12:57,709 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:12:58,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:12:58,177 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:12:58,320 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:12:58,340 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:12:58,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58 WrapperNode [2018-11-07 01:12:58,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:12:58,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:12:58,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:12:58,342 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:12:58,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:12:58,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:12:58,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:12:58,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:12:58,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (1/1) ... [2018-11-07 01:12:58,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:12:58,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:12:58,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:12:58,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:12:58,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (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 01:12:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:12:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:12:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:12:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:12:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:12:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:12:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:12:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:12:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:13:01,935 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:13:01,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:01 BoogieIcfgContainer [2018-11-07 01:13:01,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:13:01,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:13:01,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:13:01,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:13:01,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:57" (1/3) ... [2018-11-07 01:13:01,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847e38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:01, skipping insertion in model container [2018-11-07 01:13:01,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:58" (2/3) ... [2018-11-07 01:13:01,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847e38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:01, skipping insertion in model container [2018-11-07 01:13:01,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:01" (3/3) ... [2018-11-07 01:13:01,957 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label21_true-unreach-call_false-termination.c [2018-11-07 01:13:01,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:13:01,977 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:13:01,993 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:13:02,035 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:13:02,035 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:13:02,035 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:13:02,035 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:13:02,036 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:13:02,036 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:13:02,036 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:13:02,036 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:13:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:13:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 01:13:02,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:02,084 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:13:02,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:02,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:02,094 INFO L82 PathProgramCache]: Analyzing trace with hash 64907071, now seen corresponding path program 1 times [2018-11-07 01:13:02,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:02,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:02,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:02,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:02,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:02,743 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:02,874 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 01:13:02,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:02,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:13:02,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:02,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:13:02,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:13:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:02,918 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:13:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:04,521 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-11-07 01:13:04,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:13:04,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-11-07 01:13:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:04,543 INFO L225 Difference]: With dead ends: 618 [2018-11-07 01:13:04,543 INFO L226 Difference]: Without dead ends: 379 [2018-11-07 01:13:04,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-11-07 01:13:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-11-07 01:13:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-11-07 01:13:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-11-07 01:13:04,641 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 103 [2018-11-07 01:13:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:04,642 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-11-07 01:13:04,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:13:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-11-07 01:13:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 01:13:04,650 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:04,653 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:13:04,653 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:04,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1456017738, now seen corresponding path program 1 times [2018-11-07 01:13:04,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:04,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:04,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:04,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:04,955 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:05,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:05,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:13:05,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:05,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:13:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:13:05,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:13:05,055 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-11-07 01:13:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:06,490 INFO L93 Difference]: Finished difference Result 750 states and 1238 transitions. [2018-11-07 01:13:06,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 01:13:06,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-11-07 01:13:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:06,496 INFO L225 Difference]: With dead ends: 750 [2018-11-07 01:13:06,496 INFO L226 Difference]: Without dead ends: 377 [2018-11-07 01:13:06,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 01:13:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-11-07 01:13:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2018-11-07 01:13:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-11-07 01:13:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 580 transitions. [2018-11-07 01:13:06,527 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 580 transitions. Word has length 119 [2018-11-07 01:13:06,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:06,528 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 580 transitions. [2018-11-07 01:13:06,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:13:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 580 transitions. [2018-11-07 01:13:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 01:13:06,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:06,532 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:13:06,532 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:06,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash 641817781, now seen corresponding path program 1 times [2018-11-07 01:13:06,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:06,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:06,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:06,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:06,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:06,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:06,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:13:06,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:06,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:13:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:13:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:13:06,729 INFO L87 Difference]: Start difference. First operand 372 states and 580 transitions. Second operand 6 states. [2018-11-07 01:13:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:08,455 INFO L93 Difference]: Finished difference Result 952 states and 1493 transitions. [2018-11-07 01:13:08,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:13:08,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-07 01:13:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:08,466 INFO L225 Difference]: With dead ends: 952 [2018-11-07 01:13:08,466 INFO L226 Difference]: Without dead ends: 586 [2018-11-07 01:13:08,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:13:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2018-11-07 01:13:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 563. [2018-11-07 01:13:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2018-11-07 01:13:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 823 transitions. [2018-11-07 01:13:08,506 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 823 transitions. Word has length 126 [2018-11-07 01:13:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:08,507 INFO L480 AbstractCegarLoop]: Abstraction has 563 states and 823 transitions. [2018-11-07 01:13:08,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:13:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 823 transitions. [2018-11-07 01:13:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 01:13:08,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:08,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:08,511 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:08,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1176628157, now seen corresponding path program 1 times [2018-11-07 01:13:08,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:08,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:08,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:08,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:08,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:08,997 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 01:13:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:09,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:09,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:13:09,163 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:09,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:13:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:13:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:13:09,164 INFO L87 Difference]: Start difference. First operand 563 states and 823 transitions. Second operand 5 states. [2018-11-07 01:13:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:11,759 INFO L93 Difference]: Finished difference Result 1269 states and 1897 transitions. [2018-11-07 01:13:11,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:13:11,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 01:13:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:11,769 INFO L225 Difference]: With dead ends: 1269 [2018-11-07 01:13:11,770 INFO L226 Difference]: Without dead ends: 562 [2018-11-07 01:13:11,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:13:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-11-07 01:13:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-11-07 01:13:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2018-11-07 01:13:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 811 transitions. [2018-11-07 01:13:11,807 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 811 transitions. Word has length 130 [2018-11-07 01:13:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:11,807 INFO L480 AbstractCegarLoop]: Abstraction has 562 states and 811 transitions. [2018-11-07 01:13:11,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:13:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 811 transitions. [2018-11-07 01:13:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 01:13:11,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:11,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:11,811 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:11,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash 956906181, now seen corresponding path program 1 times [2018-11-07 01:13:11,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:11,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:11,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:11,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:12,092 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:12,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:12,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:13:12,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:12,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:13:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:13:12,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:13:12,452 INFO L87 Difference]: Start difference. First operand 562 states and 811 transitions. Second operand 6 states. [2018-11-07 01:13:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:14,601 INFO L93 Difference]: Finished difference Result 1544 states and 2298 transitions. [2018-11-07 01:13:14,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:13:14,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 01:13:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:14,617 INFO L225 Difference]: With dead ends: 1544 [2018-11-07 01:13:14,618 INFO L226 Difference]: Without dead ends: 988 [2018-11-07 01:13:14,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:13:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-11-07 01:13:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 962. [2018-11-07 01:13:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2018-11-07 01:13:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1349 transitions. [2018-11-07 01:13:14,658 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1349 transitions. Word has length 134 [2018-11-07 01:13:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:14,660 INFO L480 AbstractCegarLoop]: Abstraction has 962 states and 1349 transitions. [2018-11-07 01:13:14,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:13:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1349 transitions. [2018-11-07 01:13:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 01:13:14,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:14,665 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 01:13:14,665 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:14,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -973773874, now seen corresponding path program 1 times [2018-11-07 01:13:14,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:14,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:14,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:14,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:14,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:15,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:13:15,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:13:15,104 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 01:13:15,106 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:13:15,185 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:13:15,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:14:44,257 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:14:44,259 INFO L272 AbstractInterpreter]: Visited 107 different actions 416 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-11-07 01:14:44,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:14:44,273 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:14:49,426 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-11-07 01:14:49,427 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 01:17:23,556 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:17:23,561 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:17:23,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:17:23 BoogieIcfgContainer [2018-11-07 01:17:23,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:17:23,563 INFO L168 Benchmark]: Toolchain (without parser) took 265956.98 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -149.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,564 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:17:23,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,567 INFO L168 Benchmark]: Boogie Preprocessor took 118.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,568 INFO L168 Benchmark]: RCFGBuilder took 3324.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.4 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,569 INFO L168 Benchmark]: TraceAbstraction took 261619.10 ms. Allocated memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 526.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:23,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3324.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.4 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261619.10 ms. Allocated memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 526.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 460]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 460). Cancelled while BasicCegarLoop was analyzing trace of length 141 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 261.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 9.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 522 SDtfs, 2941 SDslu, 457 SDs, 0 SdLazy, 3236 SolverSat, 624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=962occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 89.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.993337904356458 AbsIntWeakeningRatio, 0.23741007194244604 AbsIntAvgWeakeningVarsNumRemoved, 1387.1438848920864 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 351343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 85/85 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown