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/Problem16_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:41:35,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:41:35,935 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:41:35,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:41:35,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:41:35,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:41:35,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:41:35,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:41:35,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:41:35,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:41:35,973 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:41:35,974 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:41:35,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:41:35,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:41:35,984 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:41:35,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:41:35,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:41:35,991 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:41:35,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:41:35,997 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:41:36,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:41:36,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:41:36,005 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:41:36,005 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:41:36,005 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:41:36,006 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:41:36,007 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:41:36,010 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:41:36,011 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:41:36,012 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:41:36,012 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:41:36,013 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:41:36,013 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:41:36,013 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:41:36,014 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:41:36,015 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:41:36,016 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 18:41:36,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:41:36,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:41:36,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:41:36,033 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:41:36,033 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:41:36,034 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:41:36,034 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:41:36,034 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:41:36,034 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:41:36,035 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:41:36,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:41:36,035 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:41:36,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:41:36,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:41:36,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:41:36,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:41:36,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:41:36,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:41:36,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:41:36,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:41:36,038 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:41:36,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:41:36,038 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:41:36,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:41:36,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:41:36,039 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:41:36,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:41:36,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:41:36,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:41:36,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:41:36,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:41:36,040 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:41:36,040 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:41:36,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:41:36,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:41:36,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:41:36,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:41:36,121 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:41:36,121 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:41:36,122 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00_false-unreach-call.c [2018-10-24 18:41:36,195 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca85d8fe5/1604bdee124643a7a280e953b6739b73/FLAGfccc3397a [2018-10-24 18:41:36,910 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:41:36,911 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label00_false-unreach-call.c [2018-10-24 18:41:36,931 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca85d8fe5/1604bdee124643a7a280e953b6739b73/FLAGfccc3397a [2018-10-24 18:41:36,950 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca85d8fe5/1604bdee124643a7a280e953b6739b73 [2018-10-24 18:41:36,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:41:36,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:41:36,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:36,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:41:36,971 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:41:36,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:36" (1/1) ... [2018-10-24 18:41:36,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601f4e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:36, skipping insertion in model container [2018-10-24 18:41:36,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:41:36" (1/1) ... [2018-10-24 18:41:36,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:41:37,071 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:41:37,860 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:37,864 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:41:38,087 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:41:38,108 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:41:38,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38 WrapperNode [2018-10-24 18:41:38,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:41:38,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:38,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:41:38,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:41:38,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:41:38,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:41:38,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:41:38,428 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:41:38,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (1/1) ... [2018-10-24 18:41:38,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:41:38,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:41:38,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:41:38,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:41:38,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (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 18:41:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:41:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:41:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:41:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:41:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:41:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:41:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:41:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:41:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:41:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:41:45,322 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:41:45,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:45 BoogieIcfgContainer [2018-10-24 18:41:45,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:41:45,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:41:45,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:41:45,329 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:41:45,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:41:36" (1/3) ... [2018-10-24 18:41:45,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7f5379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:45, skipping insertion in model container [2018-10-24 18:41:45,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:41:38" (2/3) ... [2018-10-24 18:41:45,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7f5379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:41:45, skipping insertion in model container [2018-10-24 18:41:45,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:41:45" (3/3) ... [2018-10-24 18:41:45,334 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label00_false-unreach-call.c [2018-10-24 18:41:45,343 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:41:45,352 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:41:45,370 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:41:45,413 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:41:45,414 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:41:45,414 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:41:45,414 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:41:45,414 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:41:45,415 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:41:45,415 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:41:45,415 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:41:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:41:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 18:41:45,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:45,463 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] [2018-10-24 18:41:45,468 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:45,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 479052124, now seen corresponding path program 1 times [2018-10-24 18:41:45,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:45,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:45,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:45,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:45,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:45,867 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:41:45,980 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 18:41:45,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:45,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:41:45,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:45,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:41:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:41:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:41:46,019 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:41:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:41:50,921 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:41:50,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:41:50,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-10-24 18:41:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:41:50,950 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:41:50,950 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:41:50,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:41:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:41:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:41:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:41:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-24 18:41:51,082 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 28 [2018-10-24 18:41:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:41:51,083 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-24 18:41:51,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:41:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-24 18:41:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:41:51,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:41:51,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:51,090 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:41:51,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1414003778, now seen corresponding path program 1 times [2018-10-24 18:41:51,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:41:51,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:51,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:41:51,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:41:51,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:41:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:41:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:41:51,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:41:51,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:41:51,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:51,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:41:51,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:41:51,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:41:51,459 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-24 18:42:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:02,804 INFO L93 Difference]: Finished difference Result 2960 states and 5492 transitions. [2018-10-24 18:42:02,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:42:02,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 18:42:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:02,839 INFO L225 Difference]: With dead ends: 2960 [2018-10-24 18:42:02,840 INFO L226 Difference]: Without dead ends: 2222 [2018-10-24 18:42:02,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:42:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-10-24 18:42:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2169. [2018-10-24 18:42:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2018-10-24 18:42:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3669 transitions. [2018-10-24 18:42:02,997 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3669 transitions. Word has length 104 [2018-10-24 18:42:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:02,998 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3669 transitions. [2018-10-24 18:42:02,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3669 transitions. [2018-10-24 18:42:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 18:42:03,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:03,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:03,009 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:03,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash 451977974, now seen corresponding path program 1 times [2018-10-24 18:42:03,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:03,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:03,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:03,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:03,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:03,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:03,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:42:03,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:03,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:03,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:42:03,255 INFO L87 Difference]: Start difference. First operand 2169 states and 3669 transitions. Second operand 6 states. [2018-10-24 18:42:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:08,437 INFO L93 Difference]: Finished difference Result 8029 states and 14212 transitions. [2018-10-24 18:42:08,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:42:08,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 18:42:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:08,475 INFO L225 Difference]: With dead ends: 8029 [2018-10-24 18:42:08,475 INFO L226 Difference]: Without dead ends: 5866 [2018-10-24 18:42:08,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:42:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2018-10-24 18:42:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5815. [2018-10-24 18:42:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2018-10-24 18:42:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8929 transitions. [2018-10-24 18:42:08,681 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8929 transitions. Word has length 108 [2018-10-24 18:42:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:08,682 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 8929 transitions. [2018-10-24 18:42:08,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8929 transitions. [2018-10-24 18:42:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 18:42:08,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:08,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:08,685 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:08,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2109280622, now seen corresponding path program 1 times [2018-10-24 18:42:08,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:08,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:08,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:08,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:08,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:08,925 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:42:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:08,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:08,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:42:08,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:08,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:08,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:42:08,976 INFO L87 Difference]: Start difference. First operand 5815 states and 8929 transitions. Second operand 6 states. [2018-10-24 18:42:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:13,125 INFO L93 Difference]: Finished difference Result 13785 states and 22281 transitions. [2018-10-24 18:42:13,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:42:13,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 18:42:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:13,190 INFO L225 Difference]: With dead ends: 13785 [2018-10-24 18:42:13,190 INFO L226 Difference]: Without dead ends: 7976 [2018-10-24 18:42:13,248 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 18:42:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2018-10-24 18:42:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 7901. [2018-10-24 18:42:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7901 states. [2018-10-24 18:42:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11540 transitions. [2018-10-24 18:42:13,573 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11540 transitions. Word has length 110 [2018-10-24 18:42:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:13,574 INFO L481 AbstractCegarLoop]: Abstraction has 7901 states and 11540 transitions. [2018-10-24 18:42:13,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11540 transitions. [2018-10-24 18:42:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 18:42:13,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:13,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:13,578 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:13,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1129448615, now seen corresponding path program 1 times [2018-10-24 18:42:13,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:13,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:13,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:13,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:13,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:13,798 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:42:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:13,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:13,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:42:13,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:13,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:42:13,834 INFO L87 Difference]: Start difference. First operand 7901 states and 11540 transitions. Second operand 6 states. [2018-10-24 18:42:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:19,667 INFO L93 Difference]: Finished difference Result 19234 states and 30096 transitions. [2018-10-24 18:42:19,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:42:19,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-24 18:42:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:19,756 INFO L225 Difference]: With dead ends: 19234 [2018-10-24 18:42:19,756 INFO L226 Difference]: Without dead ends: 11339 [2018-10-24 18:42:19,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:42:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2018-10-24 18:42:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 11303. [2018-10-24 18:42:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11303 states. [2018-10-24 18:42:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11303 states to 11303 states and 16095 transitions. [2018-10-24 18:42:20,121 INFO L78 Accepts]: Start accepts. Automaton has 11303 states and 16095 transitions. Word has length 113 [2018-10-24 18:42:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:20,121 INFO L481 AbstractCegarLoop]: Abstraction has 11303 states and 16095 transitions. [2018-10-24 18:42:20,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 11303 states and 16095 transitions. [2018-10-24 18:42:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 18:42:20,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:20,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:20,124 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:20,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1693537022, now seen corresponding path program 1 times [2018-10-24 18:42:20,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:20,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:20,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:20,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:20,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:20,397 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:42:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:20,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:20,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:42:20,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:20,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:20,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:42:20,756 INFO L87 Difference]: Start difference. First operand 11303 states and 16095 transitions. Second operand 6 states. [2018-10-24 18:42:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:24,989 INFO L93 Difference]: Finished difference Result 24385 states and 35477 transitions. [2018-10-24 18:42:24,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:42:24,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 18:42:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:25,049 INFO L225 Difference]: With dead ends: 24385 [2018-10-24 18:42:25,049 INFO L226 Difference]: Without dead ends: 13088 [2018-10-24 18:42:25,080 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 18:42:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2018-10-24 18:42:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 13062. [2018-10-24 18:42:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13062 states. [2018-10-24 18:42:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13062 states to 13062 states and 17310 transitions. [2018-10-24 18:42:25,381 INFO L78 Accepts]: Start accepts. Automaton has 13062 states and 17310 transitions. Word has length 118 [2018-10-24 18:42:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:25,381 INFO L481 AbstractCegarLoop]: Abstraction has 13062 states and 17310 transitions. [2018-10-24 18:42:25,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:42:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 13062 states and 17310 transitions. [2018-10-24 18:42:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 18:42:25,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:25,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:25,390 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:25,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1314242402, now seen corresponding path program 1 times [2018-10-24 18:42:25,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:25,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:25,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:25,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:25,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:26,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:42:26,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:42:26,082 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2018-10-24 18:42:26,085 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:42:26,171 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:42:26,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:42:28,303 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:42:35,021 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:42:35,022 INFO L272 AbstractInterpreter]: Visited 100 different actions 290 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:42:35,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:35,039 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:42:35,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:42:35,039 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:42:35,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:35,057 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:42:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:35,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:42:41,881 WARN L179 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 46 [2018-10-24 18:42:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:41,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:42:42,418 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 22 [2018-10-24 18:42:45,138 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-24 18:42:45,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,524 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,865 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:47,948 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:50,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:50,135 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:50,349 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:52,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:54,535 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:54,637 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:56,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:58,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:42:58,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:01,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:03,174 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:05,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,437 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,762 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:07,966 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:10,048 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:12,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:14,316 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:14,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:14,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:14,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:16,864 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:16,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:17,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:17,149 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:19,293 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:21,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:23,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:25,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:27,807 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:30,058 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:32,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:34,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:34,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:34,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:36,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:38,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:40,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:42,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:44,933 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:47,006 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:49,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:49,157 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:51,234 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:53,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:55,487 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:55,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:57,677 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:43:59,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:00,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:00,173 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:02,247 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:02,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:04,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:06,508 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:08,601 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:08,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:08,763 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:10,915 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:12,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:15,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:17,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:19,652 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:21,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:21,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:23,965 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:26,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:26,118 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:28,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:30,284 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:32,360 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:34,440 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:36,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 18:44:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:44:36,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:44:36,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2018-10-24 18:44:36,810 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:44:36,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:44:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:44:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2018-10-24 18:44:36,811 INFO L87 Difference]: Start difference. First operand 13062 states and 17310 transitions. Second operand 10 states. [2018-10-24 18:44:46,179 WARN L179 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 50 DAG size of output: 40 Received shutdown request... [2018-10-24 18:45:58,769 WARN L179 SmtUtils]: Spent 8.48 s on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2018-10-24 18:45:58,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 18:45:58,771 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:45:58,775 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:45:58,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:45:58 BoogieIcfgContainer [2018-10-24 18:45:58,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:45:58,777 INFO L168 Benchmark]: Toolchain (without parser) took 261812.85 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,778 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:45:58,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1143.32 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -840.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,781 INFO L168 Benchmark]: Boogie Preprocessor took 188.96 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,782 INFO L168 Benchmark]: RCFGBuilder took 6706.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,782 INFO L168 Benchmark]: TraceAbstraction took 253451.45 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:45:58,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1143.32 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 317.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -840.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.96 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6706.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253451.45 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was constructing difference of abstraction (13062states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (1856 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 253.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 118.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 682 SDtfs, 10029 SDslu, 790 SDs, 0 SdLazy, 14754 SolverSat, 3920 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 94.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 314 GetRequests, 164 SyntacticMatches, 92 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 139.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13062occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 241 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 124.1s InterpolantComputationTime, 821 NumberOfCodeBlocks, 821 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 932 ConstructedInterpolants, 97 QuantifiedInterpolants, 1473863 SizeOfPredicates, 3 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 105/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown