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/Problem10_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:05:34,495 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:05:34,497 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:05:34,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:05:34,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:05:34,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:05:34,513 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:05:34,515 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:05:34,516 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:05:34,517 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:05:34,518 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:05:34,518 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:05:34,519 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:05:34,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:05:34,522 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:05:34,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:05:34,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:05:34,525 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:05:34,527 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:05:34,529 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:05:34,530 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:05:34,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:05:34,534 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:05:34,544 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 [2018-10-23 22:05:34,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:05:34,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:05:34,567 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:05:34,567 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:05:34,567 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:05:34,568 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:05:34,568 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:05:34,568 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:05:34,568 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:05:34,568 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:05:34,569 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:05:34,569 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:05:34,569 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:05:34,570 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:05:34,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:05:34,570 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:05:34,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:05:34,570 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:05:34,571 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:05:34,571 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:05:34,571 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:05:34,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:05:34,571 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:05:34,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:05:34,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:05:34,572 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:05:34,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:05:34,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:05:34,573 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:05:34,573 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:05:34,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:05:34,573 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:05:34,573 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:05:34,574 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:05:34,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:05:34,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:05:34,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:05:34,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:05:34,644 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:05:34,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label48_false-unreach-call.c [2018-10-23 22:05:34,723 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d73f79cd8/5a5bdd821d7f412ebeb68d9afa5ca188/FLAG8d8a7076e [2018-10-23 22:05:35,247 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:05:35,248 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48_false-unreach-call.c [2018-10-23 22:05:35,264 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d73f79cd8/5a5bdd821d7f412ebeb68d9afa5ca188/FLAG8d8a7076e [2018-10-23 22:05:35,282 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d73f79cd8/5a5bdd821d7f412ebeb68d9afa5ca188 [2018-10-23 22:05:35,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:05:35,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:05:35,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:35,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:05:35,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:05:35,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:35" (1/1) ... [2018-10-23 22:05:35,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7fca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:35, skipping insertion in model container [2018-10-23 22:05:35,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:35" (1/1) ... [2018-10-23 22:05:35,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:05:35,406 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:05:35,905 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:35,917 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:05:36,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:36,092 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:05:36,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36 WrapperNode [2018-10-23 22:05:36,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:36,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:36,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:05:36,095 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:05:36,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:36,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:05:36,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:05:36,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:05:36,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (1/1) ... [2018-10-23 22:05:36,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:05:36,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:05:36,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:05:36,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:05:36,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (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 [2018-10-23 22:05:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:05:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:05:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:05:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:05:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:05:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:05:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:05:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:05:39,721 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:05:39,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:39 BoogieIcfgContainer [2018-10-23 22:05:39,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:05:39,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:05:39,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:05:39,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:05:39,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:05:35" (1/3) ... [2018-10-23 22:05:39,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424273e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:39, skipping insertion in model container [2018-10-23 22:05:39,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:36" (2/3) ... [2018-10-23 22:05:39,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424273e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:39, skipping insertion in model container [2018-10-23 22:05:39,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:39" (3/3) ... [2018-10-23 22:05:39,734 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label48_false-unreach-call.c [2018-10-23 22:05:39,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:05:39,755 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:05:39,770 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:05:39,809 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:05:39,809 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:05:39,810 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:05:39,810 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:05:39,810 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:05:39,810 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:05:39,810 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:05:39,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:05:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-23 22:05:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 22:05:39,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:39,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:39,864 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:39,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:39,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1154570628, now seen corresponding path program 1 times [2018-10-23 22:05:39,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:39,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:39,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:39,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:39,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:40,282 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:40,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:40,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:05:40,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:40,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:05:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:05:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:40,419 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-23 22:05:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:42,021 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-23 22:05:42,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:05:42,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-23 22:05:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:42,043 INFO L225 Difference]: With dead ends: 574 [2018-10-23 22:05:42,043 INFO L226 Difference]: Without dead ends: 356 [2018-10-23 22:05:42,051 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 [2018-10-23 22:05:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-23 22:05:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-23 22:05:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-23 22:05:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-23 22:05:42,130 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 14 [2018-10-23 22:05:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:42,130 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-23 22:05:42,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:05:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-23 22:05:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 22:05:42,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:42,136 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:42,137 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:42,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1906701860, now seen corresponding path program 1 times [2018-10-23 22:05:42,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:42,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:42,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:42,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:42,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:42,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:42,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:42,553 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:42,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:42,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:42,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:42,556 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-23 22:05:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:44,336 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-23 22:05:44,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:44,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-23 22:05:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:44,344 INFO L225 Difference]: With dead ends: 867 [2018-10-23 22:05:44,344 INFO L226 Difference]: Without dead ends: 517 [2018-10-23 22:05:44,347 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 [2018-10-23 22:05:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-23 22:05:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-23 22:05:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-23 22:05:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-23 22:05:44,387 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 88 [2018-10-23 22:05:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:44,388 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-23 22:05:44,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-23 22:05:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-23 22:05:44,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:44,393 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:44,393 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:44,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1339801912, now seen corresponding path program 1 times [2018-10-23 22:05:44,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:44,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:44,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:44,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:44,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:44,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:44,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:05:44,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:44,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:05:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:05:44,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:44,579 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 3 states. [2018-10-23 22:05:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:45,790 INFO L93 Difference]: Finished difference Result 1448 states and 2461 transitions. [2018-10-23 22:05:45,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:05:45,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2018-10-23 22:05:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:45,803 INFO L225 Difference]: With dead ends: 1448 [2018-10-23 22:05:45,803 INFO L226 Difference]: Without dead ends: 946 [2018-10-23 22:05:45,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2018-10-23 22:05:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2018-10-23 22:05:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-23 22:05:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1389 transitions. [2018-10-23 22:05:45,878 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1389 transitions. Word has length 94 [2018-10-23 22:05:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:45,879 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1389 transitions. [2018-10-23 22:05:45,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:05:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1389 transitions. [2018-10-23 22:05:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 22:05:45,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:45,895 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:45,895 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:45,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -853444597, now seen corresponding path program 1 times [2018-10-23 22:05:45,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:45,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:45,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:45,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:45,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:46,171 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:46,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:46,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:46,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:46,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:46,298 INFO L87 Difference]: Start difference. First operand 946 states and 1389 transitions. Second operand 6 states. [2018-10-23 22:05:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:49,749 INFO L93 Difference]: Finished difference Result 2483 states and 3884 transitions. [2018-10-23 22:05:49,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:49,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-10-23 22:05:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:49,767 INFO L225 Difference]: With dead ends: 2483 [2018-10-23 22:05:49,767 INFO L226 Difference]: Without dead ends: 1543 [2018-10-23 22:05:49,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-23 22:05:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1524. [2018-10-23 22:05:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1524 states. [2018-10-23 22:05:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2201 transitions. [2018-10-23 22:05:49,840 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2201 transitions. Word has length 105 [2018-10-23 22:05:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:49,842 INFO L481 AbstractCegarLoop]: Abstraction has 1524 states and 2201 transitions. [2018-10-23 22:05:49,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2201 transitions. [2018-10-23 22:05:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 22:05:49,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:49,848 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:49,848 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:49,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash -245370561, now seen corresponding path program 1 times [2018-10-23 22:05:49,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:49,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:49,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:49,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:49,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:50,187 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:50,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:50,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:50,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:50,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:50,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:50,571 INFO L87 Difference]: Start difference. First operand 1524 states and 2201 transitions. Second operand 6 states. [2018-10-23 22:05:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:52,181 INFO L93 Difference]: Finished difference Result 3629 states and 5475 transitions. [2018-10-23 22:05:52,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:52,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-23 22:05:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:52,204 INFO L225 Difference]: With dead ends: 3629 [2018-10-23 22:05:52,204 INFO L226 Difference]: Without dead ends: 2111 [2018-10-23 22:05:52,215 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 [2018-10-23 22:05:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2018-10-23 22:05:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2086. [2018-10-23 22:05:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2018-10-23 22:05:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2931 transitions. [2018-10-23 22:05:52,291 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2931 transitions. Word has length 127 [2018-10-23 22:05:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:52,291 INFO L481 AbstractCegarLoop]: Abstraction has 2086 states and 2931 transitions. [2018-10-23 22:05:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2931 transitions. [2018-10-23 22:05:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 22:05:52,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:52,296 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:52,297 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:52,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash 652649103, now seen corresponding path program 1 times [2018-10-23 22:05:52,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:52,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:52,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:52,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:52,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:52,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:52,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:52,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:52,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:52,593 INFO L87 Difference]: Start difference. First operand 2086 states and 2931 transitions. Second operand 6 states. [2018-10-23 22:05:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:54,784 INFO L93 Difference]: Finished difference Result 4447 states and 6252 transitions. [2018-10-23 22:05:54,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:54,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-23 22:05:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:54,799 INFO L225 Difference]: With dead ends: 4447 [2018-10-23 22:05:54,799 INFO L226 Difference]: Without dead ends: 2367 [2018-10-23 22:05:54,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2018-10-23 22:05:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2303. [2018-10-23 22:05:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2018-10-23 22:05:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2993 transitions. [2018-10-23 22:05:54,882 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2993 transitions. Word has length 151 [2018-10-23 22:05:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:54,883 INFO L481 AbstractCegarLoop]: Abstraction has 2303 states and 2993 transitions. [2018-10-23 22:05:54,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2993 transitions. [2018-10-23 22:05:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-23 22:05:54,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:54,892 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:05:54,892 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:54,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:54,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1632298331, now seen corresponding path program 1 times [2018-10-23 22:05:54,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:54,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:54,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:54,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:54,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:55,183 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 22:05:55,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:05:55,382 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:05:55,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-23 22:05:55,385 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:05:55,463 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:05:55,464 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:05:57,955 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:06:26,802 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:06:26,804 INFO L272 AbstractInterpreter]: Visited 145 different actions 840 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:06:26,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:26,817 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:06:30,358 INFO L232 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 73.29% of their original sizes. [2018-10-23 22:06:30,358 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:06:57,438 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:06:57,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:06:57,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [8] total 30 [2018-10-23 22:06:57,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:57,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 22:06:57,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 22:06:57,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:06:57,441 INFO L87 Difference]: Start difference. First operand 2303 states and 2993 transitions. Second operand 24 states. Received shutdown request... [2018-10-23 22:09:39,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-23 22:09:39,711 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:09:39,716 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:09:39,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:09:39 BoogieIcfgContainer [2018-10-23 22:09:39,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:09:39,717 INFO L168 Benchmark]: Toolchain (without parser) took 244412.00 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.5 GB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:39,718 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. [2018-10-23 22:09:39,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:39,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:39,721 INFO L168 Benchmark]: Boogie Preprocessor took 109.26 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. [2018-10-23 22:09:39,722 INFO L168 Benchmark]: RCFGBuilder took 3299.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.8 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:39,723 INFO L168 Benchmark]: TraceAbstraction took 239993.33 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:39,729 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 784.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.26 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 3299.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.8 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239993.33 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was constructing difference of abstraction (2303states) and FLOYD_HOARE automaton (currently 28 states, 24 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 239.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 174.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 876 SDtfs, 5467 SDslu, 726 SDs, 0 SdLazy, 6404 SolverSat, 1171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 290 GetRequests, 197 SyntacticMatches, 30 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 30.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2303occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 31.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.994872400756144 AbsIntWeakeningRatio, 0.11304347826086956 AbsIntAvgWeakeningVarsNumRemoved, 262.53478260869565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 810 NumberOfCodeBlocks, 810 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 626266 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 123/129 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown