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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:58:11,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:58:11,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:58:11,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:58:11,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:58:11,901 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:58:11,902 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:58:11,904 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:58:11,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:58:11,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:58:11,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:58:11,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:58:11,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:58:11,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:58:11,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:58:11,920 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:58:11,921 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:58:11,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:58:11,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:58:11,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:58:11,934 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:58:11,935 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:58:11,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:58:11,945 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:58:11,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:58:11,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:58:11,973 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:58:11,973 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:58:11,973 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:58:11,974 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:58:11,974 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:58:11,974 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:58:11,974 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:58:11,974 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:58:11,975 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:58:11,975 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:58:11,975 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:58:11,975 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:58:11,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:58:11,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:58:11,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:58:11,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:58:11,978 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:58:11,978 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:58:11,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:58:11,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:58:11,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:58:11,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:58:11,979 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:58:11,979 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:58:11,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:58:11,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:58:11,980 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:58:11,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:58:11,981 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:58:12,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:58:12,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:58:12,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:58:12,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:58:12,059 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:58:12,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-24 23:58:12,127 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dcc82755/093e83207a5f4436994e5e55b3ee817b/FLAGb5747cd90 [2018-10-24 23:58:12,958 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:58:12,959 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-24 23:58:13,006 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dcc82755/093e83207a5f4436994e5e55b3ee817b/FLAGb5747cd90 [2018-10-24 23:58:13,022 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dcc82755/093e83207a5f4436994e5e55b3ee817b [2018-10-24 23:58:13,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:58:13,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:58:13,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:58:13,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:58:13,050 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:58:13,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:58:13" (1/1) ... [2018-10-24 23:58:13,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:13, skipping insertion in model container [2018-10-24 23:58:13,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:58:13" (1/1) ... [2018-10-24 23:58:13,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:58:13,335 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:58:15,281 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:58:15,286 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:58:16,404 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:58:16,462 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:58:16,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16 WrapperNode [2018-10-24 23:58:16,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:58:16,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:58:16,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:58:16,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:58:16,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:16,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:58:17,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:58:17,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:58:17,188 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:58:17,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (1/1) ... [2018-10-24 23:58:17,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:58:17,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:58:17,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:58:17,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:58:17,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (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 23:58:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:58:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 23:58:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 23:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 23:58:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 23:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:58:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:58:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:58:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:58:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:58:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:58:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:58:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:58:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:58:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:58:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:58:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:58:36,306 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:58:36,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:58:36 BoogieIcfgContainer [2018-10-24 23:58:36,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:58:36,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:58:36,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:58:36,312 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:58:36,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:58:13" (1/3) ... [2018-10-24 23:58:36,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:58:36, skipping insertion in model container [2018-10-24 23:58:36,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:16" (2/3) ... [2018-10-24 23:58:36,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:58:36, skipping insertion in model container [2018-10-24 23:58:36,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:58:36" (3/3) ... [2018-10-24 23:58:36,316 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-10-24 23:58:36,326 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:58:36,337 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:58:36,356 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:58:36,409 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:58:36,409 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:58:36,409 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:58:36,409 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:58:36,409 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:58:36,410 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:58:36,410 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:58:36,410 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:58:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 23:58:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 23:58:36,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:58:36,478 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] [2018-10-24 23:58:36,481 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:58:36,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:58:36,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1224049076, now seen corresponding path program 1 times [2018-10-24 23:58:36,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:58:36,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:36,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:58:36,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:36,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:58:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:58:36,959 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:58:37,077 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 23:58:37,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:58:37,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:58:37,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:58:37,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:58:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:58:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:58:37,115 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 23:58:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:58:53,442 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-10-24 23:58:53,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:58:53,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-24 23:58:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:58:53,507 INFO L225 Difference]: With dead ends: 5049 [2018-10-24 23:58:53,508 INFO L226 Difference]: Without dead ends: 3269 [2018-10-24 23:58:53,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:58:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-10-24 23:58:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-10-24 23:58:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-10-24 23:58:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-10-24 23:58:53,780 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 32 [2018-10-24 23:58:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:58:53,781 INFO L481 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-10-24 23:58:53,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:58:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-10-24 23:58:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 23:58:53,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:58:53,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:53,791 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:58:53,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:58:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash -54041823, now seen corresponding path program 1 times [2018-10-24 23:58:53,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:58:53,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:53,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:58:53,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:53,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:58:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:58:54,210 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:58:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:58:54,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:58:54,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:58:54,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:58:54,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:58:54,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:58:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:58:54,612 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-10-24 23:59:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:59:22,346 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-10-24 23:59:22,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:59:22,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 23:59:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:59:22,405 INFO L225 Difference]: With dead ends: 12137 [2018-10-24 23:59:22,406 INFO L226 Difference]: Without dead ends: 8925 [2018-10-24 23:59:22,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:59:22,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-10-24 23:59:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-10-24 23:59:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-10-24 23:59:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-10-24 23:59:22,659 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 104 [2018-10-24 23:59:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:59:22,662 INFO L481 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-10-24 23:59:22,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:59:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-10-24 23:59:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 23:59:22,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:59:22,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:22,676 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:59:22,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:59:22,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1938657519, now seen corresponding path program 1 times [2018-10-24 23:59:22,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:59:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:22,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:59:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:22,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:59:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:59:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:59:23,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:59:23,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:59:23,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:59:23,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:59:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:59:23,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:59:23,050 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-10-25 00:00:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:00:03,632 INFO L93 Difference]: Finished difference Result 32230 states and 52865 transitions. [2018-10-25 00:00:03,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:00:03,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-10-25 00:00:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:00:03,725 INFO L225 Difference]: With dead ends: 32230 [2018-10-25 00:00:03,725 INFO L226 Difference]: Without dead ends: 23374 [2018-10-25 00:00:03,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:00:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23374 states. [2018-10-25 00:00:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23374 to 23190. [2018-10-25 00:00:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23190 states. [2018-10-25 00:00:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 32180 transitions. [2018-10-25 00:00:04,262 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 32180 transitions. Word has length 106 [2018-10-25 00:00:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:00:04,262 INFO L481 AbstractCegarLoop]: Abstraction has 23190 states and 32180 transitions. [2018-10-25 00:00:04,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:00:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 32180 transitions. [2018-10-25 00:00:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-25 00:00:04,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:00:04,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:00:04,267 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:00:04,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:00:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1852913499, now seen corresponding path program 1 times [2018-10-25 00:00:04,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:00:04,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:04,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:00:04,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:04,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:00:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:00:04,544 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:00:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:00:04,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:00:04,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:00:04,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:00:04,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:00:04,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:00:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:00:04,934 INFO L87 Difference]: Start difference. First operand 23190 states and 32180 transitions. Second operand 6 states. [2018-10-25 00:00:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:00:22,258 INFO L93 Difference]: Finished difference Result 52866 states and 76149 transitions. [2018-10-25 00:00:22,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:00:22,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-25 00:00:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:00:22,364 INFO L225 Difference]: With dead ends: 52866 [2018-10-25 00:00:22,364 INFO L226 Difference]: Without dead ends: 29682 [2018-10-25 00:00:22,428 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 [2018-10-25 00:00:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2018-10-25 00:00:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 29421. [2018-10-25 00:00:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29421 states. [2018-10-25 00:00:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29421 states to 29421 states and 40884 transitions. [2018-10-25 00:00:23,046 INFO L78 Accepts]: Start accepts. Automaton has 29421 states and 40884 transitions. Word has length 111 [2018-10-25 00:00:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:00:23,047 INFO L481 AbstractCegarLoop]: Abstraction has 29421 states and 40884 transitions. [2018-10-25 00:00:23,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:00:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 29421 states and 40884 transitions. [2018-10-25 00:00:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-25 00:00:23,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:00:23,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:00:23,051 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:00:23,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:00:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1811621932, now seen corresponding path program 1 times [2018-10-25 00:00:23,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:00:23,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:23,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:00:23,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:23,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:00:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:00:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:00:23,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:00:23,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:00:23,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:00:23,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:00:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:00:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:00:23,449 INFO L87 Difference]: Start difference. First operand 29421 states and 40884 transitions. Second operand 5 states. [2018-10-25 00:00:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:00:50,835 INFO L93 Difference]: Finished difference Result 88569 states and 130012 transitions. [2018-10-25 00:00:50,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:00:50,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-25 00:00:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:00:51,082 INFO L225 Difference]: With dead ends: 88569 [2018-10-25 00:00:51,082 INFO L226 Difference]: Without dead ends: 59154 [2018-10-25 00:00:51,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:00:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59154 states. [2018-10-25 00:00:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59154 to 57940. [2018-10-25 00:00:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57940 states. [2018-10-25 00:00:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57940 states to 57940 states and 76957 transitions. [2018-10-25 00:00:52,819 INFO L78 Accepts]: Start accepts. Automaton has 57940 states and 76957 transitions. Word has length 161 [2018-10-25 00:00:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:00:52,820 INFO L481 AbstractCegarLoop]: Abstraction has 57940 states and 76957 transitions. [2018-10-25 00:00:52,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:00:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57940 states and 76957 transitions. [2018-10-25 00:00:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-25 00:00:52,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:00:52,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:00:52,826 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:00:52,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:00:52,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1275866513, now seen corresponding path program 1 times [2018-10-25 00:00:52,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:00:52,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:52,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:00:52,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:52,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:00:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:00:53,135 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:00:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:00:53,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:00:53,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:00:53,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:00:53,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:00:53,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:00:53,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:00:53,568 INFO L87 Difference]: Start difference. First operand 57940 states and 76957 transitions. Second operand 6 states. [2018-10-25 00:01:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:01:18,687 INFO L93 Difference]: Finished difference Result 146785 states and 205556 transitions. [2018-10-25 00:01:18,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:01:18,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-25 00:01:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:01:18,984 INFO L225 Difference]: With dead ends: 146785 [2018-10-25 00:01:18,984 INFO L226 Difference]: Without dead ends: 88851 [2018-10-25 00:01:19,126 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 [2018-10-25 00:01:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88851 states. [2018-10-25 00:01:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88851 to 88388. [2018-10-25 00:01:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88388 states. [2018-10-25 00:01:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88388 states to 88388 states and 115312 transitions. [2018-10-25 00:01:21,641 INFO L78 Accepts]: Start accepts. Automaton has 88388 states and 115312 transitions. Word has length 171 [2018-10-25 00:01:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:01:21,642 INFO L481 AbstractCegarLoop]: Abstraction has 88388 states and 115312 transitions. [2018-10-25 00:01:21,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:01:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 88388 states and 115312 transitions. [2018-10-25 00:01:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-25 00:01:21,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:01:21,658 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, 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] [2018-10-25 00:01:21,658 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:01:21,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:01:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1456435458, now seen corresponding path program 1 times [2018-10-25 00:01:21,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:01:21,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:21,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:01:21,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:21,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:01:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:01:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 50 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:01:22,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:01:22,174 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:01:22,175 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-25 00:01:22,177 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5382], [5384], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 00:01:22,228 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:01:22,228 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:01:22,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:01:22,764 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 00:01:22,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:01:22,815 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:01:23,400 INFO L232 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 75.27% of their original sizes. [2018-10-25 00:01:23,400 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:01:23,556 INFO L413 sIntCurrentIteration]: We have 196 unified AI predicates [2018-10-25 00:01:23,556 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:01:23,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:01:23,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 00:01:23,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:01:23,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:01:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:01:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:01:23,559 INFO L87 Difference]: Start difference. First operand 88388 states and 115312 transitions. Second operand 6 states. Received shutdown request... [2018-10-25 00:01:57,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:01:57,477 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:01:57,482 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:01:57,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:01:57 BoogieIcfgContainer [2018-10-25 00:01:57,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:01:57,484 INFO L168 Benchmark]: Toolchain (without parser) took 224443.45 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,485 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-10-25 00:01:57,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3419.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 724.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,488 INFO L168 Benchmark]: Boogie Preprocessor took 475.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,488 INFO L168 Benchmark]: RCFGBuilder took 18643.56 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 167.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.7 MB). Peak memory consumption was 668.9 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,490 INFO L168 Benchmark]: TraceAbstraction took 201175.02 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -823.2 MB). Peak memory consumption was 449.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:57,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 3419.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 724.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 475.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18643.56 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 167.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.7 MB). Peak memory consumption was 668.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201175.02 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -823.2 MB). Peak memory consumption was 449.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (88388states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (20003 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 201.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 189.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3501 SDtfs, 38163 SDslu, 4275 SDs, 0 SdLazy, 58136 SolverSat, 15510 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 155.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88388occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9973741967142589 AbsIntWeakeningRatio, 0.1377551020408163 AbsIntAvgWeakeningVarsNumRemoved, 17.163265306122447 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 2236 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 882 NumberOfCodeBlocks, 882 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 549842 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 180/249 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown