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/Problem17_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:08:46,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:08:46,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:08:46,942 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:08:46,943 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:08:46,944 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:08:46,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:08:46,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:08:46,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:08:46,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:08:46,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:08:46,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:08:46,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:08:46,960 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:08:46,961 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:08:46,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:08:46,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:08:46,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:08:46,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:08:46,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:08:46,969 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:08:46,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:08:46,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:08:46,987 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 22:08:47,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:08:47,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:08:47,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:08:47,019 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:08:47,019 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:08:47,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:08:47,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:08:47,020 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:08:47,020 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:08:47,020 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:08:47,021 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:08:47,021 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:08:47,021 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:08:47,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:08:47,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:08:47,022 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:08:47,022 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:08:47,022 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:08:47,023 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:08:47,023 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:08:47,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:08:47,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:08:47,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:08:47,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:08:47,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:08:47,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:08:47,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:08:47,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:08:47,026 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:08:47,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:08:47,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:08:47,027 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:08:47,027 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:08:47,027 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:08:47,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:08:47,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:08:47,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:08:47,125 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:08:47,125 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:08:47,126 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-24 22:08:47,190 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec631ac2/cffdec0a81274a38a58d6208dd3bab3f/FLAGc6a31316b [2018-10-24 22:08:47,903 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:08:47,905 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-24 22:08:47,936 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec631ac2/cffdec0a81274a38a58d6208dd3bab3f/FLAGc6a31316b [2018-10-24 22:08:47,951 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec631ac2/cffdec0a81274a38a58d6208dd3bab3f [2018-10-24 22:08:47,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:08:47,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:08:47,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:08:47,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:08:47,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:08:47,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:47" (1/1) ... [2018-10-24 22:08:47,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a2e493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:47, skipping insertion in model container [2018-10-24 22:08:47,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:47" (1/1) ... [2018-10-24 22:08:47,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:08:48,124 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:08:49,091 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:08:49,102 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:08:49,567 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:08:49,598 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:08:49,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49 WrapperNode [2018-10-24 22:08:49,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:08:49,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:08:49,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:08:49,601 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:08:49,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:49,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:08:50,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:08:50,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:08:50,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:08:50,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (1/1) ... [2018-10-24 22:08:50,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:08:50,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:08:50,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:08:50,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:08:50,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (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 22:08:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:08:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:08:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:08:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:08:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:08:50,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:08:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:08:50,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:08:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:08:50,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:09:03,847 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:09:03,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:09:03 BoogieIcfgContainer [2018-10-24 22:09:03,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:09:03,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:09:03,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:09:03,853 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:09:03,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:08:47" (1/3) ... [2018-10-24 22:09:03,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351249b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:09:03, skipping insertion in model container [2018-10-24 22:09:03,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:49" (2/3) ... [2018-10-24 22:09:03,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351249b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:09:03, skipping insertion in model container [2018-10-24 22:09:03,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:09:03" (3/3) ... [2018-10-24 22:09:03,857 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21_true-unreach-call.c [2018-10-24 22:09:03,868 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:09:03,877 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:09:03,895 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:09:03,939 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:09:03,939 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:09:03,939 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:09:03,940 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:09:03,940 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:09:03,940 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:09:03,940 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:09:03,940 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:09:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:09:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 22:09:03,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:03,997 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] [2018-10-24 22:09:03,999 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:04,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1861558100, now seen corresponding path program 1 times [2018-10-24 22:09:04,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:04,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:04,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:04,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:04,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:04,600 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 22:09:04,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:04,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:09:04,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:04,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:09:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:09:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:04,631 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:09:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:15,215 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 22:09:15,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:09:15,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-10-24 22:09:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:15,279 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 22:09:15,279 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 22:09:15,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 22:09:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 22:09:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 22:09:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 22:09:15,455 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 66 [2018-10-24 22:09:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:15,456 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 22:09:15,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:09:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 22:09:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 22:09:15,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:15,465 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:09:15,465 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:15,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -436141222, now seen corresponding path program 1 times [2018-10-24 22:09:15,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:15,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:15,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:15,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:15,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:15,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:15,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:09:15,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:15,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:09:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:09:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:09:15,856 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 22:09:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:26,820 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 22:09:26,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:09:26,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 22:09:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:26,841 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 22:09:26,841 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 22:09:26,846 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 22:09:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 22:09:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 22:09:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 22:09:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 22:09:26,950 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 142 [2018-10-24 22:09:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:26,951 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 22:09:26,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:09:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 22:09:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 22:09:26,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:26,962 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, 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] [2018-10-24 22:09:26,962 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:26,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:26,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1261890222, now seen corresponding path program 1 times [2018-10-24 22:09:26,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:26,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:26,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:27,317 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:09:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:27,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:27,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:09:27,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:27,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:09:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:09:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:09:27,733 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 22:09:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:33,394 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-24 22:09:33,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:09:33,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 22:09:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:33,416 INFO L225 Difference]: With dead ends: 4880 [2018-10-24 22:09:33,416 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 22:09:33,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:09:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 22:09:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-24 22:09:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:09:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-24 22:09:33,514 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 146 [2018-10-24 22:09:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:33,515 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-24 22:09:33,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:09:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-24 22:09:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 22:09:33,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:33,520 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, 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] [2018-10-24 22:09:33,520 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:33,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1548926097, now seen corresponding path program 1 times [2018-10-24 22:09:33,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:33,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:33,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:33,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:33,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:33,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:33,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:09:33,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:33,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:09:33,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:09:33,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:33,799 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-24 22:09:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:39,618 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-24 22:09:39,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:09:39,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-10-24 22:09:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:39,634 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 22:09:39,635 INFO L226 Difference]: Without dead ends: 2880 [2018-10-24 22:09:39,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-24 22:09:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-24 22:09:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:09:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-24 22:09:39,719 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 176 [2018-10-24 22:09:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:39,720 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-24 22:09:39,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:09:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-24 22:09:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-24 22:09:39,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:39,725 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, 3, 3, 3, 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] [2018-10-24 22:09:39,725 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:39,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash -639298360, now seen corresponding path program 1 times [2018-10-24 22:09:39,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:39,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:39,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:39,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:39,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 22:09:39,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:39,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:09:39,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:39,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:09:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:09:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:39,945 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 4 states. [2018-10-24 22:09:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:50,445 INFO L93 Difference]: Finished difference Result 11049 states and 14698 transitions. [2018-10-24 22:09:50,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:09:50,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-10-24 22:09:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:50,486 INFO L225 Difference]: With dead ends: 11049 [2018-10-24 22:09:50,486 INFO L226 Difference]: Without dead ends: 8175 [2018-10-24 22:09:50,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:09:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2018-10-24 22:09:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 8171. [2018-10-24 22:09:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8171 states. [2018-10-24 22:09:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 9880 transitions. [2018-10-24 22:09:50,684 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 9880 transitions. Word has length 230 [2018-10-24 22:09:50,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:50,685 INFO L481 AbstractCegarLoop]: Abstraction has 8171 states and 9880 transitions. [2018-10-24 22:09:50,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:09:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 9880 transitions. [2018-10-24 22:09:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 22:09:50,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:50,695 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, 3, 3, 3, 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] [2018-10-24 22:09:50,695 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:50,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:50,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1380574037, now seen corresponding path program 1 times [2018-10-24 22:09:50,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:50,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:50,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:50,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:50,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:09:51,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:09:51,276 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:09:51,277 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 22:09:51,279 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1138], [1140], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:09:51,356 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:09:51,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:09:53,970 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:09:54,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:09:54,286 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:09:54,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:54,296 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:09:57,294 INFO L232 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 75.85% of their original sizes. [2018-10-24 22:09:57,296 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:09:57,975 INFO L413 sIntCurrentIteration]: We have 252 unified AI predicates [2018-10-24 22:09:57,975 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:09:57,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:09:57,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 22:09:57,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:57,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:09:57,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:09:57,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:09:57,979 INFO L87 Difference]: Start difference. First operand 8171 states and 9880 transitions. Second operand 8 states. [2018-10-24 22:12:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:19,835 INFO L93 Difference]: Finished difference Result 16772 states and 20222 transitions. [2018-10-24 22:12:19,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:12:19,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2018-10-24 22:12:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:19,871 INFO L225 Difference]: With dead ends: 16772 [2018-10-24 22:12:19,872 INFO L226 Difference]: Without dead ends: 8607 [2018-10-24 22:12:19,892 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:12:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8607 states. [2018-10-24 22:12:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8607 to 8605. [2018-10-24 22:12:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-24 22:12:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 10325 transitions. [2018-10-24 22:12:20,096 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 10325 transitions. Word has length 253 [2018-10-24 22:12:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:20,096 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 10325 transitions. [2018-10-24 22:12:20,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:12:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 10325 transitions. [2018-10-24 22:12:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-24 22:12:20,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:20,108 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:20,109 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:20,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 757180591, now seen corresponding path program 1 times [2018-10-24 22:12:20,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:20,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:20,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:20,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:20,111 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 22:12:20,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:20,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:12:20,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:20,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:12:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:12:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:20,538 INFO L87 Difference]: Start difference. First operand 8605 states and 10325 transitions. Second operand 4 states. [2018-10-24 22:12:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:29,227 INFO L93 Difference]: Finished difference Result 22089 states and 27084 transitions. [2018-10-24 22:12:29,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:12:29,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2018-10-24 22:12:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:29,278 INFO L225 Difference]: With dead ends: 22089 [2018-10-24 22:12:29,278 INFO L226 Difference]: Without dead ends: 13924 [2018-10-24 22:12:29,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13924 states. Received shutdown request... [2018-10-24 22:12:29,460 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:12:29,465 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:12:29,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:12:29 BoogieIcfgContainer [2018-10-24 22:12:29,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:12:29,467 INFO L168 Benchmark]: Toolchain (without parser) took 221503.42 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -682.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,468 INFO L168 Benchmark]: CDTParser took 0.21 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 22:12:29,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1634.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 476.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.3 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,472 INFO L168 Benchmark]: Boogie Preprocessor took 306.13 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,473 INFO L168 Benchmark]: RCFGBuilder took 13465.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.1 MB). Peak memory consumption was 480.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,474 INFO L168 Benchmark]: TraceAbstraction took 205615.99 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -372.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:12:29,482 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1634.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 476.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.3 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 306.13 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13465.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.1 MB). Peak memory consumption was 480.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205615.99 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -372.5 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: 185]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 185). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 194.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3735 SDtfs, 8714 SDslu, 1775 SDs, 0 SdLazy, 16811 SolverSat, 3444 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 147.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 263 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8605occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9961538461538461 AbsIntWeakeningRatio, 0.10714285714285714 AbsIntAvgWeakeningVarsNumRemoved, 1053.9484126984128 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 547 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1309 NumberOfCodeBlocks, 1309 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1302 ConstructedInterpolants, 0 QuantifiedInterpolants, 948345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 700/772 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown