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_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:51:14,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:51:14,410 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:51:14,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:51:14,423 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:51:14,424 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:51:14,426 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:51:14,428 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:51:14,432 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:51:14,438 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:51:14,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:51:14,442 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:51:14,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:51:14,444 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:51:14,445 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:51:14,446 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:51:14,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:51:14,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:51:14,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:51:14,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:51:14,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:51:14,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:51:14,469 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:51:14,478 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:51:14,479 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:51:14,480 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:51:14,481 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:51:14,481 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:51:14,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:51:14,509 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:51:14,510 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:51:14,510 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:51:14,510 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:51:14,511 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:51:14,514 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:51:14,515 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:51:14,515 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:51:14,515 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:51:14,515 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:51:14,515 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:51:14,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:51:14,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:51:14,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:51:14,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:51:14,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:51:14,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:51:14,518 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:51:14,518 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:51:14,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:51:14,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:51:14,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:51:14,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:51:14,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:51:14,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:51:14,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:51:14,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:51:14,521 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:51:14,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:51:14,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:51:14,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:51:14,522 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:51:14,523 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:51:14,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:51:14,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:51:14,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:51:14,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:51:14,594 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:51:14,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-24 01:51:14,658 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb037bf96/55064a02c3e549af9960ce9018d388ce/FLAGa60977396 [2018-10-24 01:51:15,331 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:51:15,332 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-24 01:51:15,348 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb037bf96/55064a02c3e549af9960ce9018d388ce/FLAGa60977396 [2018-10-24 01:51:15,363 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb037bf96/55064a02c3e549af9960ce9018d388ce [2018-10-24 01:51:15,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:51:15,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:51:15,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:51:15,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:51:15,382 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:51:15,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:51:15" (1/1) ... [2018-10-24 01:51:15,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acf1635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:15, skipping insertion in model container [2018-10-24 01:51:15,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:51:15" (1/1) ... [2018-10-24 01:51:15,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:51:15,479 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:51:16,185 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:51:16,190 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:51:16,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:51:16,483 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:51:16,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16 WrapperNode [2018-10-24 01:51:16,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:51:16,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:51:16,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:51:16,485 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:51:16,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:51:16,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:51:16,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:51:16,831 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:51:16,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:16,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (1/1) ... [2018-10-24 01:51:17,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:51:17,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:51:17,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:51:17,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:51:17,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (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 01:51:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:51:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:51:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:51:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:51:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:51:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:51:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:51:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:51:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:51:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:51:24,921 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:51:24,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:51:24 BoogieIcfgContainer [2018-10-24 01:51:24,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:51:24,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:51:24,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:51:24,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:51:24,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:51:15" (1/3) ... [2018-10-24 01:51:24,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c95a322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:51:24, skipping insertion in model container [2018-10-24 01:51:24,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:51:16" (2/3) ... [2018-10-24 01:51:24,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c95a322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:51:24, skipping insertion in model container [2018-10-24 01:51:24,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:51:24" (3/3) ... [2018-10-24 01:51:24,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label16_true-unreach-call.c [2018-10-24 01:51:24,941 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:51:24,950 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:51:24,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:51:25,010 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:51:25,011 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:51:25,011 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:51:25,011 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:51:25,011 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:51:25,011 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:51:25,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:51:25,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:51:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 01:51:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 01:51:25,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:25,057 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:51:25,061 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:25,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash 657368747, now seen corresponding path program 1 times [2018-10-24 01:51:25,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:25,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:25,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:25,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:25,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:25,567 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:51:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:51:25,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:51:25,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:51:25,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:51:25,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:51:25,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:51:25,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:51:25,728 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 01:51:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:51:30,392 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 01:51:30,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:51:30,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-24 01:51:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:51:30,422 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 01:51:30,422 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 01:51:30,434 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 01:51:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 01:51:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 01:51:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 01:51:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-24 01:51:30,551 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 49 [2018-10-24 01:51:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:51:30,552 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-24 01:51:30,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:51:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-24 01:51:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 01:51:30,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:30,560 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:51:30,561 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:30,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash 591590536, now seen corresponding path program 1 times [2018-10-24 01:51:30,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:30,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:30,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:51:30,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:51:30,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:51:30,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:51:30,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:51:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:51:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:51:30,947 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-24 01:51:35,114 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 01:51:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:51:45,385 INFO L93 Difference]: Finished difference Result 2960 states and 5492 transitions. [2018-10-24 01:51:45,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:51:45,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 01:51:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:51:45,413 INFO L225 Difference]: With dead ends: 2960 [2018-10-24 01:51:45,413 INFO L226 Difference]: Without dead ends: 2222 [2018-10-24 01:51:45,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:51:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-10-24 01:51:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2169. [2018-10-24 01:51:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2018-10-24 01:51:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3669 transitions. [2018-10-24 01:51:45,539 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3669 transitions. Word has length 125 [2018-10-24 01:51:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:51:45,539 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3669 transitions. [2018-10-24 01:51:45,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:51:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3669 transitions. [2018-10-24 01:51:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 01:51:45,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:45,549 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:51:45,549 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:45,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 975106256, now seen corresponding path program 1 times [2018-10-24 01:51:45,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:45,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:45,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:45,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:45,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:51:45,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:51:45,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:51:45,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:51:45,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:51:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:51:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:51:45,798 INFO L87 Difference]: Start difference. First operand 2169 states and 3669 transitions. Second operand 6 states. [2018-10-24 01:51:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:51:52,290 INFO L93 Difference]: Finished difference Result 8029 states and 14212 transitions. [2018-10-24 01:51:52,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:51:52,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 01:51:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:51:52,341 INFO L225 Difference]: With dead ends: 8029 [2018-10-24 01:51:52,341 INFO L226 Difference]: Without dead ends: 5866 [2018-10-24 01:51:52,374 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 01:51:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2018-10-24 01:51:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5815. [2018-10-24 01:51:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2018-10-24 01:51:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8929 transitions. [2018-10-24 01:51:52,544 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8929 transitions. Word has length 129 [2018-10-24 01:51:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:51:52,545 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 8929 transitions. [2018-10-24 01:51:52,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:51:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8929 transitions. [2018-10-24 01:51:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 01:51:52,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:52,548 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:51:52,548 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:52,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash -834708748, now seen corresponding path program 1 times [2018-10-24 01:51:52,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:52,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:52,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:52,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:52,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:51:52,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:51:52,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:51:52,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:51:52,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:51:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:51:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:51:52,846 INFO L87 Difference]: Start difference. First operand 5815 states and 8929 transitions. Second operand 6 states. [2018-10-24 01:51:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:51:59,309 INFO L93 Difference]: Finished difference Result 14127 states and 22920 transitions. [2018-10-24 01:51:59,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:51:59,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 01:51:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:51:59,373 INFO L225 Difference]: With dead ends: 14127 [2018-10-24 01:51:59,373 INFO L226 Difference]: Without dead ends: 8318 [2018-10-24 01:51:59,419 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 01:51:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2018-10-24 01:51:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 8243. [2018-10-24 01:51:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8243 states. [2018-10-24 01:51:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 12158 transitions. [2018-10-24 01:51:59,646 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 12158 transitions. Word has length 131 [2018-10-24 01:51:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:51:59,647 INFO L481 AbstractCegarLoop]: Abstraction has 8243 states and 12158 transitions. [2018-10-24 01:51:59,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:51:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 12158 transitions. [2018-10-24 01:51:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 01:51:59,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:59,650 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:51:59,651 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:59,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:59,651 INFO L82 PathProgramCache]: Analyzing trace with hash 845250593, now seen corresponding path program 1 times [2018-10-24 01:51:59,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:59,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:59,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:59,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:59,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:59,871 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:52:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:52:00,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:52:00,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:52:00,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:52:00,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:52:00,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:52:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:52:00,129 INFO L87 Difference]: Start difference. First operand 8243 states and 12158 transitions. Second operand 6 states. [2018-10-24 01:52:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:52:04,477 INFO L93 Difference]: Finished difference Result 19923 states and 31423 transitions. [2018-10-24 01:52:04,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:52:04,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 01:52:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:52:04,564 INFO L225 Difference]: With dead ends: 19923 [2018-10-24 01:52:04,564 INFO L226 Difference]: Without dead ends: 11686 [2018-10-24 01:52:04,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:52:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11686 states. [2018-10-24 01:52:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 11640. [2018-10-24 01:52:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11640 states. [2018-10-24 01:52:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 16576 transitions. [2018-10-24 01:52:04,938 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 16576 transitions. Word has length 134 [2018-10-24 01:52:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:52:04,938 INFO L481 AbstractCegarLoop]: Abstraction has 11640 states and 16576 transitions. [2018-10-24 01:52:04,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:52:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 16576 transitions. [2018-10-24 01:52:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 01:52:04,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:52:04,943 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:52:04,943 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:52:04,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:52:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747012, now seen corresponding path program 1 times [2018-10-24 01:52:04,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:52:04,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:52:04,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:52:04,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:52:04,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:52:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:52:05,204 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:52:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:52:05,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:52:05,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:52:05,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:52:05,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:52:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:52:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:52:05,560 INFO L87 Difference]: Start difference. First operand 11640 states and 16576 transitions. Second operand 6 states. [2018-10-24 01:52:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:52:08,437 INFO L93 Difference]: Finished difference Result 25059 states and 36462 transitions. [2018-10-24 01:52:08,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:52:08,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 01:52:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:52:08,503 INFO L225 Difference]: With dead ends: 25059 [2018-10-24 01:52:08,503 INFO L226 Difference]: Without dead ends: 13425 [2018-10-24 01:52:08,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:52:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2018-10-24 01:52:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 13399. [2018-10-24 01:52:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13399 states. [2018-10-24 01:52:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13399 states to 13399 states and 17766 transitions. [2018-10-24 01:52:08,878 INFO L78 Accepts]: Start accepts. Automaton has 13399 states and 17766 transitions. Word has length 139 [2018-10-24 01:52:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:52:08,878 INFO L481 AbstractCegarLoop]: Abstraction has 13399 states and 17766 transitions. [2018-10-24 01:52:08,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:52:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 13399 states and 17766 transitions. [2018-10-24 01:52:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 01:52:08,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:52:08,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:52:08,882 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:52:08,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:52:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash 520725928, now seen corresponding path program 1 times [2018-10-24 01:52:08,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:52:08,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:52:08,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:52:08,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:52:08,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:52:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:52:09,135 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:52:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 01:52:09,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:52:09,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:52:09,360 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-10-24 01:52:09,365 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [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 01:52:09,472 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:52:09,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:52:11,544 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:52:21,195 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:52:21,196 INFO L272 AbstractInterpreter]: Visited 99 different actions 377 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:52:21,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:52:21,211 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:52:23,475 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 82.89% of their original sizes. [2018-10-24 01:52:23,476 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:53:13,459 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:53:13,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:53:13,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-24 01:53:13,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:53:13,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 01:53:13,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 01:53:13,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-24 01:53:13,462 INFO L87 Difference]: Start difference. First operand 13399 states and 17766 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 01:55:14,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 01:55:14,547 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:55:14,551 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:55:14,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:55:14 BoogieIcfgContainer [2018-10-24 01:55:14,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:55:14,553 INFO L168 Benchmark]: Toolchain (without parser) took 239178.26 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -333.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 01:55:14,554 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:55:14,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1107.50 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 01:55:14,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 345.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:55:14,556 INFO L168 Benchmark]: Boogie Preprocessor took 194.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:55:14,557 INFO L168 Benchmark]: RCFGBuilder took 7896.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:55:14,558 INFO L168 Benchmark]: TraceAbstraction took 229628.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 176.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:55:14,563 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1107.50 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 345.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7896.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229628.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 176.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (13399states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (1329 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 160.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 677 SDtfs, 10191 SDslu, 684 SDs, 0 SdLazy, 14506 SolverSat, 3869 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 76.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 203 GetRequests, 78 SyntacticMatches, 69 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 54.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13399occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934006211180127 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 30.22142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 429638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown