java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:27:23,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:27:23,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:27:23,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:27:23,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:27:23,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:27:23,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:27:23,924 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:27:23,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:27:23,926 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:27:23,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:27:23,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:27:23,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:27:23,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:27:23,931 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:27:23,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:27:23,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:27:23,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:27:23,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:27:23,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:27:23,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:27:23,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:27:23,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:27:23,952 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 01:27:23,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:27:23,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:27:23,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:27:23,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:27:23,987 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:27:23,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:27:23,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:27:23,987 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:27:23,987 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:27:23,988 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:27:23,988 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:27:23,988 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:27:23,989 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:27:23,989 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:27:23,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:27:23,990 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:27:23,990 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:27:23,990 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:27:23,990 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:27:23,990 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:27:23,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:27:23,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:27:23,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:27:23,993 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:27:23,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:27:23,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:27:23,994 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:27:23,995 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:27:23,995 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:27:24,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:27:24,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:27:24,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:27:24,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:27:24,078 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:27:24,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-10-24 01:27:24,148 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1bdbddc7/3906008c575a4bb49f6c1609d5c499e8/FLAG1c4a215fc [2018-10-24 01:27:24,955 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:27:24,956 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-10-24 01:27:25,001 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1bdbddc7/3906008c575a4bb49f6c1609d5c499e8/FLAG1c4a215fc [2018-10-24 01:27:25,020 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1bdbddc7/3906008c575a4bb49f6c1609d5c499e8 [2018-10-24 01:27:25,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:27:25,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:27:25,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:27:25,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:27:25,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:27:25,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:27:25" (1/1) ... [2018-10-24 01:27:25,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab4c919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:25, skipping insertion in model container [2018-10-24 01:27:25,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:27:25" (1/1) ... [2018-10-24 01:27:25,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:27:25,260 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:27:26,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:27:26,781 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:27:27,677 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:27:27,721 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:27:27,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27 WrapperNode [2018-10-24 01:27:27,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:27:27,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:27:27,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:27:27,723 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:27:27,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:27,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:27:28,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:27:28,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:27:28,359 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:27:28,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (1/1) ... [2018-10-24 01:27:28,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:27:28,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:27:28,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:27:28,644 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:27:28,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (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 01:27:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:27:28,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:27:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:27:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:27:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:27:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:27:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:27:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:27:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:27:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:27:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:27:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:27:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:27:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:27:39,259 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:27:39,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:39 BoogieIcfgContainer [2018-10-24 01:27:39,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:27:39,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:27:39,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:27:39,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:27:39,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:27:25" (1/3) ... [2018-10-24 01:27:39,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bbb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:39, skipping insertion in model container [2018-10-24 01:27:39,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:27" (2/3) ... [2018-10-24 01:27:39,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bbb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:39, skipping insertion in model container [2018-10-24 01:27:39,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:39" (3/3) ... [2018-10-24 01:27:39,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label34_true-unreach-call.c [2018-10-24 01:27:39,279 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:27:39,289 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:27:39,308 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:27:39,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:27:39,376 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:27:39,376 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:27:39,376 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:27:39,376 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:27:39,376 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:27:39,376 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:27:39,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:27:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:27:39,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-24 01:27:39,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:39,445 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] [2018-10-24 01:27:39,448 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:39,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash 784010707, now seen corresponding path program 1 times [2018-10-24 01:27:39,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:39,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:39,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:39,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:39,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:40,002 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:27:40,158 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 01:27:40,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:27:40,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:27:40,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:40,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:27:40,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:27:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:27:40,187 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:27:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:27:50,384 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-10-24 01:27:50,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:27:50,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-10-24 01:27:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:27:50,426 INFO L225 Difference]: With dead ends: 3093 [2018-10-24 01:27:50,426 INFO L226 Difference]: Without dead ends: 1971 [2018-10-24 01:27:50,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:27:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-10-24 01:27:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-10-24 01:27:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-10-24 01:27:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-10-24 01:27:50,610 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 63 [2018-10-24 01:27:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:27:50,611 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-10-24 01:27:50,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:27:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-10-24 01:27:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 01:27:50,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:50,623 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:27:50,624 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:50,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash -666764916, now seen corresponding path program 1 times [2018-10-24 01:27:50,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:50,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:50,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:50,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:50,626 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:27:51,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:27:51,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:27:51,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:51,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:27:51,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:27:51,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:27:51,252 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-10-24 01:28:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:28:05,280 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-10-24 01:28:05,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:28:05,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 01:28:05,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:28:05,308 INFO L225 Difference]: With dead ends: 5627 [2018-10-24 01:28:05,308 INFO L226 Difference]: Without dead ends: 3676 [2018-10-24 01:28:05,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:28:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-10-24 01:28:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-10-24 01:28:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-10-24 01:28:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-10-24 01:28:05,442 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 146 [2018-10-24 01:28:05,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:28:05,442 INFO L481 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-10-24 01:28:05,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:28:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-10-24 01:28:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 01:28:05,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:28:05,457 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:28:05,458 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:28:05,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:28:05,458 INFO L82 PathProgramCache]: Analyzing trace with hash -646191812, now seen corresponding path program 1 times [2018-10-24 01:28:05,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:28:05,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:05,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:28:05,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:05,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:28:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:28:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:28:05,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:28:05,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:28:05,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:28:05,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:28:05,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:28:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:28:05,718 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-10-24 01:28:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:28:21,293 INFO L93 Difference]: Finished difference Result 10957 states and 18516 transitions. [2018-10-24 01:28:21,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:28:21,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-10-24 01:28:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:28:21,352 INFO L225 Difference]: With dead ends: 10957 [2018-10-24 01:28:21,352 INFO L226 Difference]: Without dead ends: 7320 [2018-10-24 01:28:21,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:28:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2018-10-24 01:28:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7131. [2018-10-24 01:28:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7131 states. [2018-10-24 01:28:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 10923 transitions. [2018-10-24 01:28:21,606 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 10923 transitions. Word has length 162 [2018-10-24 01:28:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:28:21,607 INFO L481 AbstractCegarLoop]: Abstraction has 7131 states and 10923 transitions. [2018-10-24 01:28:21,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:28:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 10923 transitions. [2018-10-24 01:28:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 01:28:21,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:28:21,613 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:28:21,613 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:28:21,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:28:21,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1378098232, now seen corresponding path program 1 times [2018-10-24 01:28:21,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:28:21,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:21,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:28:21,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:21,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:28:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:28:22,040 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:28:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:28:22,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:28:22,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:28:22,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:28:22,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:28:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:28:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:28:22,156 INFO L87 Difference]: Start difference. First operand 7131 states and 10923 transitions. Second operand 6 states. [2018-10-24 01:28:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:28:34,173 INFO L93 Difference]: Finished difference Result 19766 states and 31245 transitions. [2018-10-24 01:28:34,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:28:34,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-10-24 01:28:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:28:34,251 INFO L225 Difference]: With dead ends: 19766 [2018-10-24 01:28:34,251 INFO L226 Difference]: Without dead ends: 12641 [2018-10-24 01:28:34,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:28:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2018-10-24 01:28:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 12439. [2018-10-24 01:28:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12439 states. [2018-10-24 01:28:34,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18019 transitions. [2018-10-24 01:28:34,601 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18019 transitions. Word has length 199 [2018-10-24 01:28:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:28:34,602 INFO L481 AbstractCegarLoop]: Abstraction has 12439 states and 18019 transitions. [2018-10-24 01:28:34,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:28:34,602 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18019 transitions. [2018-10-24 01:28:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 01:28:34,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:28:34,611 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:28:34,611 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:28:34,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:28:34,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1937080759, now seen corresponding path program 1 times [2018-10-24 01:28:34,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:28:34,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:34,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:28:34,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:34,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:28:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:28:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:28:35,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:28:35,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:28:35,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:28:35,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:28:35,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:28:35,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:28:35,054 INFO L87 Difference]: Start difference. First operand 12439 states and 18019 transitions. Second operand 6 states. [2018-10-24 01:28:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:28:55,053 INFO L93 Difference]: Finished difference Result 42949 states and 69054 transitions. [2018-10-24 01:28:55,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:28:55,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-10-24 01:28:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:28:55,228 INFO L225 Difference]: With dead ends: 42949 [2018-10-24 01:28:55,229 INFO L226 Difference]: Without dead ends: 30516 [2018-10-24 01:28:55,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:28:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30516 states. [2018-10-24 01:28:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30516 to 30278. [2018-10-24 01:28:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30278 states. [2018-10-24 01:28:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30278 states to 30278 states and 43651 transitions. [2018-10-24 01:28:56,136 INFO L78 Accepts]: Start accepts. Automaton has 30278 states and 43651 transitions. Word has length 221 [2018-10-24 01:28:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:28:56,137 INFO L481 AbstractCegarLoop]: Abstraction has 30278 states and 43651 transitions. [2018-10-24 01:28:56,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:28:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30278 states and 43651 transitions. [2018-10-24 01:28:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 01:28:56,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:28:56,155 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:56,155 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:28:56,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:28:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash 830569225, now seen corresponding path program 1 times [2018-10-24 01:28:56,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:28:56,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:56,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:28:56,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:28:56,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:28:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:28:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:28:56,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:28:56,817 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:28:56,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-24 01:28:56,823 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3031], [3033], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3171], [3176], [3178], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:28:56,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:28:56,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:29:05,608 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:29:05,610 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:29:05,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:29:05,642 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:29:10,490 INFO L232 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 71.82% of their original sizes. [2018-10-24 01:29:10,491 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:29:12,159 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:29:12,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:29:12,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 01:29:12,160 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:29:12,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:29:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:29:12,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:29:12,162 INFO L87 Difference]: Start difference. First operand 30278 states and 43651 transitions. Second operand 11 states. [2018-10-24 01:29:48,436 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:31:02,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:31:02,795 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:31:02,801 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:31:02,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:31:02 BoogieIcfgContainer [2018-10-24 01:31:02,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:31:02,802 INFO L168 Benchmark]: Toolchain (without parser) took 217765.28 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,804 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 01:31:02,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2682.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 635.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,806 INFO L168 Benchmark]: Boogie Preprocessor took 284.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,807 INFO L168 Benchmark]: RCFGBuilder took 10616.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 232.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -67.4 MB). Peak memory consumption was 697.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,808 INFO L168 Benchmark]: TraceAbstraction took 203540.65 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -450.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:31:02,813 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 2682.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 635.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 284.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10616.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 232.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -67.4 MB). Peak memory consumption was 697.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203540.65 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -450.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (30278states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5223 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2358 SDtfs, 19936 SDslu, 2621 SDs, 0 SdLazy, 27403 SolverSat, 7305 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 133.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 316 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30278occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9966570271833427 AbsIntWeakeningRatio, 0.12406015037593984 AbsIntAvgWeakeningVarsNumRemoved, 25.42105263157895 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 676 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1058 NumberOfCodeBlocks, 1058 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1052 ConstructedInterpolants, 0 QuantifiedInterpolants, 805759 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 415/417 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown