java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:19:21,818 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:19:21,820 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:19:21,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:19:21,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:19:21,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:19:21,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:19:21,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:19:21,839 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:19:21,840 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:19:21,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:19:21,841 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:19:21,842 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:19:21,843 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:19:21,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:19:21,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:19:21,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:19:21,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:19:21,850 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:19:21,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:19:21,853 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:19:21,854 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:19:21,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:19:21,866 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 17:19:21,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:19:21,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:19:21,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:19:21,884 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:19:21,884 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:19:21,884 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:19:21,884 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:19:21,885 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:19:21,885 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:19:21,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:19:21,885 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:19:21,885 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:19:21,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:19:21,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:19:21,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:19:21,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:19:21,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:19:21,887 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:19:21,887 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:19:21,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:19:21,888 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:19:21,888 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:19:21,888 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:19:21,888 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:19:21,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:21,889 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:19:21,889 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:19:21,889 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:19:21,889 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:19:21,890 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:19:21,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:19:21,890 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:19:21,890 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:19:21,890 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:19:21,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:19:21,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:19:21,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:19:21,968 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:19:21,969 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:19:21,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50_false-unreach-call_false-termination.c [2018-10-24 17:19:22,038 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0146308b/19f891fa5d364ee2ba344bf54fd07554/FLAGa24fb52b4 [2018-10-24 17:19:22,628 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:19:22,629 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label50_false-unreach-call_false-termination.c [2018-10-24 17:19:22,647 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0146308b/19f891fa5d364ee2ba344bf54fd07554/FLAGa24fb52b4 [2018-10-24 17:19:22,663 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0146308b/19f891fa5d364ee2ba344bf54fd07554 [2018-10-24 17:19:22,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:19:22,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:19:22,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:22,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:19:22,687 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:19:22,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36832d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22, skipping insertion in model container [2018-10-24 17:19:22,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:19:22,775 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:19:23,268 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:23,278 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:19:23,405 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:23,429 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:19:23,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23 WrapperNode [2018-10-24 17:19:23,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:23,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:23,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:19:23,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:19:23,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:23,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:19:23,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:19:23,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:19:23,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (1/1) ... [2018-10-24 17:19:23,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:19:23,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:19:23,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:19:23,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:19:23,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (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 17:19:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:19:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:19:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:19:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:19:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:19:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:19:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:19:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:19:27,046 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:19:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:27 BoogieIcfgContainer [2018-10-24 17:19:27,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:19:27,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:19:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:19:27,052 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:19:27,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:19:22" (1/3) ... [2018-10-24 17:19:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fd3123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:27, skipping insertion in model container [2018-10-24 17:19:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:23" (2/3) ... [2018-10-24 17:19:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fd3123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:27, skipping insertion in model container [2018-10-24 17:19:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:27" (3/3) ... [2018-10-24 17:19:27,057 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label50_false-unreach-call_false-termination.c [2018-10-24 17:19:27,067 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:19:27,076 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:19:27,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:19:27,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:19:27,140 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:19:27,140 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:19:27,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:19:27,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:19:27,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:19:27,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:19:27,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:19:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 17:19:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 17:19:27,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:27,180 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] [2018-10-24 17:19:27,183 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:27,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:27,189 INFO L82 PathProgramCache]: Analyzing trace with hash -110615784, now seen corresponding path program 1 times [2018-10-24 17:19:27,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:27,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:27,818 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:19:27,917 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 17:19:27,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:27,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:27,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:27,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:27,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:27,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:27,948 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 17:19:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:29,545 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-24 17:19:29,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:29,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2018-10-24 17:19:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:29,569 INFO L225 Difference]: With dead ends: 621 [2018-10-24 17:19:29,569 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 17:19:29,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 17:19:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 17:19:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 17:19:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-24 17:19:29,660 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 88 [2018-10-24 17:19:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:29,661 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-24 17:19:29,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-24 17:19:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 17:19:29,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:29,670 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:29,674 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:29,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2087174949, now seen corresponding path program 1 times [2018-10-24 17:19:29,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:29,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:29,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:29,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:29,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:29,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:29,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:29,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:29,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:29,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:29,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:29,857 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-24 17:19:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:31,024 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-24 17:19:31,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:31,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-10-24 17:19:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:31,034 INFO L225 Difference]: With dead ends: 1057 [2018-10-24 17:19:31,035 INFO L226 Difference]: Without dead ends: 681 [2018-10-24 17:19:31,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-24 17:19:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-24 17:19:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-24 17:19:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-24 17:19:31,088 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 97 [2018-10-24 17:19:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:31,088 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-24 17:19:31,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-24 17:19:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 17:19:31,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:31,095 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:31,096 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:31,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1316217369, now seen corresponding path program 1 times [2018-10-24 17:19:31,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:31,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:31,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:31,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:31,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:19:31,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:31,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:19:31,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:19:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:19:31,671 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 6 states. [2018-10-24 17:19:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:34,333 INFO L93 Difference]: Finished difference Result 2173 states and 3497 transitions. [2018-10-24 17:19:34,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:19:34,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-24 17:19:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:34,347 INFO L225 Difference]: With dead ends: 2173 [2018-10-24 17:19:34,348 INFO L226 Difference]: Without dead ends: 1503 [2018-10-24 17:19:34,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:19:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2018-10-24 17:19:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1483. [2018-10-24 17:19:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2018-10-24 17:19:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2166 transitions. [2018-10-24 17:19:34,435 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2166 transitions. Word has length 103 [2018-10-24 17:19:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:34,436 INFO L481 AbstractCegarLoop]: Abstraction has 1483 states and 2166 transitions. [2018-10-24 17:19:34,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:19:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2166 transitions. [2018-10-24 17:19:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 17:19:34,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:34,441 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] [2018-10-24 17:19:34,442 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:34,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:34,443 INFO L82 PathProgramCache]: Analyzing trace with hash -654069662, now seen corresponding path program 1 times [2018-10-24 17:19:34,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:34,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:34,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:34,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:34,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:34,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:34,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:19:34,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:34,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:19:34,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:19:34,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:19:34,657 INFO L87 Difference]: Start difference. First operand 1483 states and 2166 transitions. Second operand 6 states. [2018-10-24 17:19:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:36,213 INFO L93 Difference]: Finished difference Result 4036 states and 5989 transitions. [2018-10-24 17:19:36,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:19:36,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 17:19:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:36,236 INFO L225 Difference]: With dead ends: 4036 [2018-10-24 17:19:36,236 INFO L226 Difference]: Without dead ends: 2559 [2018-10-24 17:19:36,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:19:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2018-10-24 17:19:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2527. [2018-10-24 17:19:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2527 states. [2018-10-24 17:19:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3541 transitions. [2018-10-24 17:19:36,336 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3541 transitions. Word has length 111 [2018-10-24 17:19:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:36,336 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 3541 transitions. [2018-10-24 17:19:36,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:19:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3541 transitions. [2018-10-24 17:19:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 17:19:36,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:36,342 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] [2018-10-24 17:19:36,342 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:36,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1207925353, now seen corresponding path program 1 times [2018-10-24 17:19:36,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:36,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:36,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:36,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:36,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 17:19:36,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:19:36,799 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:19:36,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-10-24 17:19:36,802 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], [375], [377], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:19:36,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:19:36,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:20:40,792 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:20:40,795 INFO L272 AbstractInterpreter]: Visited 92 different actions 356 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 17:20:40,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:20:40,808 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:20:46,168 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 81.01% of their original sizes. [2018-10-24 17:20:46,169 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:23:09,606 INFO L413 sIntCurrentIteration]: We have 124 unified AI predicates [2018-10-24 17:23:09,607 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:23:09,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:23:09,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-10-24 17:23:09,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:23:09,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 17:23:09,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 17:23:09,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-10-24 17:23:09,609 INFO L87 Difference]: Start difference. First operand 2527 states and 3541 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 17:23:48,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 17:23:48,277 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:23:48,282 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:23:48,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:23:48 BoogieIcfgContainer [2018-10-24 17:23:48,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:23:48,283 INFO L168 Benchmark]: Toolchain (without parser) took 265608.28 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -567.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:48,285 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:23:48,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:48,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:48,287 INFO L168 Benchmark]: Boogie Preprocessor took 71.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:23:48,288 INFO L168 Benchmark]: RCFGBuilder took 3348.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.1 MB). Peak memory consumption was 104.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:48,288 INFO L168 Benchmark]: TraceAbstraction took 261232.94 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 115.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:48,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.06 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 196.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3348.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.1 MB). Peak memory consumption was 104.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261232.94 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 115.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 415]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 415). Cancelled while BasicCegarLoop was constructing difference of abstraction (2527states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 261.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 45.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 775 SDtfs, 2034 SDslu, 421 SDs, 0 SdLazy, 2902 SolverSat, 712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 161 GetRequests, 58 SyntacticMatches, 64 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 151.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2527occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9925320056899001 AbsIntWeakeningRatio, 0.2661290322580645 AbsIntAvgWeakeningVarsNumRemoved, 1513.8629032258063 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 519 ConstructedInterpolants, 0 QuantifiedInterpolants, 139986 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 75/83 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown