java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:21:10,638 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:21:10,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:21:10,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:21:10,655 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:21:10,657 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:21:10,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:21:10,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:21:10,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:21:10,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:21:10,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:21:10,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:21:10,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:21:10,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:21:10,680 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:21:10,681 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:21:10,682 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:21:10,685 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:21:10,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:21:10,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:21:10,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:21:10,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:21:10,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:21:10,716 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:21:10,743 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:21:10,743 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:21:10,744 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:21:10,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:21:10,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:21:10,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:21:10,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:21:10,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:21:10,748 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:21:10,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:21:10,749 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:21:10,749 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:21:10,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:21:10,750 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:21:10,751 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:21:10,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:21:10,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:21:10,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:21:10,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:21:10,752 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:21:10,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:21:10,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:21:10,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:21:10,754 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:21:10,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:21:10,754 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:21:10,754 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:21:10,755 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:21:10,755 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:21:10,755 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:21:10,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:21:10,756 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:21:10,756 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:21:10,756 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:21:10,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:21:10,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:21:10,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:21:10,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:21:10,843 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:21:10,844 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-09-18 11:21:11,209 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb90166b/c763a7493c714749bfe2a32563cc32e7/FLAG37ce40172 [2018-09-18 11:21:11,508 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:21:11,510 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-09-18 11:21:11,538 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb90166b/c763a7493c714749bfe2a32563cc32e7/FLAG37ce40172 [2018-09-18 11:21:11,558 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb90166b/c763a7493c714749bfe2a32563cc32e7 [2018-09-18 11:21:11,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:21:11,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:21:11,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:21:11,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:21:11,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:21:11,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:21:11" (1/1) ... [2018-09-18 11:21:11,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a77e263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:11, skipping insertion in model container [2018-09-18 11:21:11,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:21:11" (1/1) ... [2018-09-18 11:21:11,605 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:21:12,235 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:21:12,254 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:21:12,385 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:21:12,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12 WrapperNode [2018-09-18 11:21:12,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:21:12,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:21:12,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:21:12,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:21:12,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:21:12,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:21:12,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:21:12,648 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:21:12,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:12,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:13,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... [2018-09-18 11:21:13,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:21:13,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:21:13,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:21:13,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:21:13,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 11:21:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:21:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:21:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:21:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:21:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:21:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:21:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:21:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:21:17,296 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:21:17,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:21:17 BoogieIcfgContainer [2018-09-18 11:21:17,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:21:17,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:21:17,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:21:17,302 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:21:17,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:21:11" (1/3) ... [2018-09-18 11:21:17,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77868306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:21:17, skipping insertion in model container [2018-09-18 11:21:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:12" (2/3) ... [2018-09-18 11:21:17,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77868306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:21:17, skipping insertion in model container [2018-09-18 11:21:17,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:21:17" (3/3) ... [2018-09-18 11:21:17,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19_true-unreach-call.c [2018-09-18 11:21:17,316 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:21:17,327 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:21:17,383 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:21:17,384 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:21:17,385 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:21:17,385 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:21:17,385 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:21:17,385 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:21:17,385 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:21:17,386 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:21:17,386 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:21:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-18 11:21:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-18 11:21:17,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:17,426 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:21:17,428 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1747963281, now seen corresponding path program 1 times [2018-09-18 11:21:17,436 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:17,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:17,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:17,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:17,494 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:18,007 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:18,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:21:18,008 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:18,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:21:18,032 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:21:18,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:21:18,037 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-18 11:21:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:21,125 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-09-18 11:21:21,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:21:21,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-09-18 11:21:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:21,151 INFO L225 Difference]: With dead ends: 982 [2018-09-18 11:21:21,152 INFO L226 Difference]: Without dead ends: 683 [2018-09-18 11:21:21,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:21:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-09-18 11:21:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-09-18 11:21:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-09-18 11:21:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-09-18 11:21:21,272 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 63 [2018-09-18 11:21:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:21,273 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-09-18 11:21:21,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:21:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-09-18 11:21:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-18 11:21:21,282 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:21,282 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:21:21,282 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1450662836, now seen corresponding path program 1 times [2018-09-18 11:21:21,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:21,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:21,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:21,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:21,285 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:21,826 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:21,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 11:21:21,826 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:21,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:21:21,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:21:21,828 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:21:21,829 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-09-18 11:21:23,091 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 11:21:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:27,432 INFO L93 Difference]: Finished difference Result 1980 states and 3018 transitions. [2018-09-18 11:21:27,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:21:27,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2018-09-18 11:21:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:27,444 INFO L225 Difference]: With dead ends: 1980 [2018-09-18 11:21:27,444 INFO L226 Difference]: Without dead ends: 1303 [2018-09-18 11:21:27,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:21:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2018-09-18 11:21:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1246. [2018-09-18 11:21:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2018-09-18 11:21:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1784 transitions. [2018-09-18 11:21:27,534 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1784 transitions. Word has length 137 [2018-09-18 11:21:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:27,535 INFO L480 AbstractCegarLoop]: Abstraction has 1246 states and 1784 transitions. [2018-09-18 11:21:27,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:21:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1784 transitions. [2018-09-18 11:21:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-18 11:21:27,551 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:27,551 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:21:27,554 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:27,555 INFO L82 PathProgramCache]: Analyzing trace with hash 507062389, now seen corresponding path program 1 times [2018-09-18 11:21:27,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:27,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:27,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:27,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:27,557 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:27,900 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:27,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:21:27,901 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:27,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:21:27,902 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:21:27,902 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:21:27,902 INFO L87 Difference]: Start difference. First operand 1246 states and 1784 transitions. Second operand 4 states. [2018-09-18 11:21:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:31,712 INFO L93 Difference]: Finished difference Result 4504 states and 6780 transitions. [2018-09-18 11:21:31,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:21:31,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-09-18 11:21:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:31,745 INFO L225 Difference]: With dead ends: 4504 [2018-09-18 11:21:31,745 INFO L226 Difference]: Without dead ends: 3264 [2018-09-18 11:21:31,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:21:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-09-18 11:21:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3234. [2018-09-18 11:21:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2018-09-18 11:21:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4526 transitions. [2018-09-18 11:21:31,866 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4526 transitions. Word has length 195 [2018-09-18 11:21:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:31,871 INFO L480 AbstractCegarLoop]: Abstraction has 3234 states and 4526 transitions. [2018-09-18 11:21:31,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:21:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4526 transitions. [2018-09-18 11:21:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-18 11:21:31,882 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:31,883 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:21:31,883 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:31,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1163566050, now seen corresponding path program 1 times [2018-09-18 11:21:31,883 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:31,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:31,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:31,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:31,885 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:32,207 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:21:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:21:32,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:21:32,592 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:21:32,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:32,611 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:21:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:32,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:21:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 11:21:33,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:21:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:21:34,188 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:21:34,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:21:34,188 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:34,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:21:34,189 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:21:34,189 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:21:34,191 INFO L87 Difference]: Start difference. First operand 3234 states and 4526 transitions. Second operand 5 states. [2018-09-18 11:21:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:38,396 INFO L93 Difference]: Finished difference Result 9336 states and 13589 transitions. [2018-09-18 11:21:38,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:21:38,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-09-18 11:21:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:38,442 INFO L225 Difference]: With dead ends: 9336 [2018-09-18 11:21:38,443 INFO L226 Difference]: Without dead ends: 6108 [2018-09-18 11:21:38,470 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:21:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2018-09-18 11:21:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 5844. [2018-09-18 11:21:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5844 states. [2018-09-18 11:21:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 7863 transitions. [2018-09-18 11:21:38,632 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 7863 transitions. Word has length 210 [2018-09-18 11:21:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:38,633 INFO L480 AbstractCegarLoop]: Abstraction has 5844 states and 7863 transitions. [2018-09-18 11:21:38,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:21:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 7863 transitions. [2018-09-18 11:21:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-18 11:21:38,642 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:38,643 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:21:38,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:38,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2105312380, now seen corresponding path program 1 times [2018-09-18 11:21:38,643 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:38,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:38,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:38,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:38,645 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:39,133 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:21:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:39,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:21:39,466 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:21:39,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:39,475 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:21:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:39,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:58,138 WARN L178 SmtUtils]: Spent 2.30 m on a formula simplification. DAG size of input: 436 DAG size of output: 104 [2018-09-18 11:23:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 71 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:23:58,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:59,357 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-09-18 11:24:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:24:00,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:24:00,644 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:24:00,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:24:00,667 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:24:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:24:00,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:24:01,099 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 16 [2018-09-18 11:24:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:24:01,248 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:24:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:24:01,893 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:24:01,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 8, 5] total 32 [2018-09-18 11:24:01,894 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:24:01,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-18 11:24:01,895 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-18 11:24:01,896 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2018-09-18 11:24:01,896 INFO L87 Difference]: Start difference. First operand 5844 states and 7863 transitions. Second operand 18 states. [2018-09-18 11:24:08,160 WARN L178 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2018-09-18 11:24:17,229 WARN L178 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 129 DAG size of output: 55 [2018-09-18 11:24:35,731 WARN L178 SmtUtils]: Spent 12.23 s on a formula simplification. DAG size of input: 128 DAG size of output: 54 [2018-09-18 11:24:46,713 WARN L178 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 117 DAG size of output: 48 [2018-09-18 11:25:30,816 WARN L178 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 135 DAG size of output: 86 Received shutdown request... [2018-09-18 11:25:45,700 WARN L186 SmtUtils]: Removed 11 from assertion stack [2018-09-18 11:25:45,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-18 11:25:45,701 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:25:45,704 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:25:45,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:25:45 BoogieIcfgContainer [2018-09-18 11:25:45,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:25:45,705 INFO L168 Benchmark]: Toolchain (without parser) took 274134.56 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -734.9 MB). Peak memory consumption was 479.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,707 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-18 11:25:45,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.00 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 189.77 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,709 INFO L168 Benchmark]: Boogie Preprocessor took 367.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.4 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,710 INFO L168 Benchmark]: RCFGBuilder took 4281.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 195.8 MB). Peak memory consumption was 195.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,711 INFO L168 Benchmark]: TraceAbstraction took 268406.58 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 386.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -62.9 MB). Peak memory consumption was 324.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:45,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 882.00 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 189.77 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 367.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.4 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4281.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 195.8 MB). Peak memory consumption was 195.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 268406.58 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 386.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -62.9 MB). Peak memory consumption was 324.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (5844states) and FLOYD_HOARE automaton (currently 71 states, 18 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 126. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 268.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 120.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1002 SDtfs, 8893 SDslu, 1707 SDs, 0 SdLazy, 13857 SolverSat, 2453 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 79.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1544 GetRequests, 1417 SyntacticMatches, 6 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 170.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5844occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 351 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 145.8s InterpolantComputationTime, 1577 NumberOfCodeBlocks, 1577 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2284 ConstructedInterpolants, 11 QuantifiedInterpolants, 5655642 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1015/1597 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-25-45-733.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-25-45-733.csv Completed graceful shutdown