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_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:53:49,188 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:53:49,191 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:53:49,205 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:53:49,206 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:53:49,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:53:49,208 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:53:49,210 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:53:49,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:53:49,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:53:49,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:53:49,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:53:49,223 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:53:49,224 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:53:49,225 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:53:49,225 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:53:49,226 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:53:49,228 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:53:49,230 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:53:49,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:53:49,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:53:49,234 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:53:49,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:53:49,251 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 00:53:49,283 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:53:49,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:53:49,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:53:49,285 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:53:49,285 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:53:49,285 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:53:49,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:53:49,285 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:53:49,286 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:53:49,286 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:53:49,286 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:53:49,287 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:53:49,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:53:49,288 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:53:49,289 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:53:49,289 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:53:49,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:53:49,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:53:49,289 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:53:49,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:53:49,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:53:49,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:53:49,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:53:49,290 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:53:49,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:53:49,292 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:53:49,292 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:53:49,293 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:53:49,294 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:53:49,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:53:49,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:53:49,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:53:49,383 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:53:49,383 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:53:49,384 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-10-24 00:53:49,446 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02abffcb2/0911ad88cad14a609eef328f86ff2c8c/FLAG0c4437030 [2018-10-24 00:53:50,046 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:53:50,047 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-10-24 00:53:50,069 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02abffcb2/0911ad88cad14a609eef328f86ff2c8c/FLAG0c4437030 [2018-10-24 00:53:50,090 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02abffcb2/0911ad88cad14a609eef328f86ff2c8c [2018-10-24 00:53:50,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:53:50,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:53:50,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:53:50,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:53:50,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:53:50,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:50,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fe9958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50, skipping insertion in model container [2018-10-24 00:53:50,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:50,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:53:50,177 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:53:50,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:53:50,618 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:53:50,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:53:50,783 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:53:50,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50 WrapperNode [2018-10-24 00:53:50,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:53:50,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:53:50,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:53:50,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:53:50,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:50,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:53:51,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:53:51,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:53:51,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:53:51,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... [2018-10-24 00:53:51,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:53:51,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:53:51,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:53:51,137 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:53:51,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:53:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:53:51,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:53:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:53:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:53:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:53:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:53:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:53:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:53:54,543 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:53:54,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:54 BoogieIcfgContainer [2018-10-24 00:53:54,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:53:54,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:53:54,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:53:54,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:53:54,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:53:50" (1/3) ... [2018-10-24 00:53:54,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982eb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:54, skipping insertion in model container [2018-10-24 00:53:54,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50" (2/3) ... [2018-10-24 00:53:54,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982eb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:54, skipping insertion in model container [2018-10-24 00:53:54,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:54" (3/3) ... [2018-10-24 00:53:54,553 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label21_true-unreach-call.c [2018-10-24 00:53:54,561 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:53:54,569 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:53:54,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:53:54,624 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:53:54,624 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:53:54,625 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:53:54,625 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:53:54,625 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:53:54,626 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:53:54,626 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:53:54,626 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:53:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:53:54,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 00:53:54,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:53:54,663 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:53:54,665 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:53:54,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:53:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash 763875860, now seen corresponding path program 1 times [2018-10-24 00:53:54,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:53:54,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:53:54,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:53:54,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:53:54,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:53:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:53:55,093 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:53:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:53:55,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:53:55,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 00:53:55,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:53:55,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 00:53:55,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 00:53:55,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:53:55,164 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 00:53:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:53:57,493 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 00:53:57,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 00:53:57,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-10-24 00:53:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:53:57,516 INFO L225 Difference]: With dead ends: 574 [2018-10-24 00:53:57,516 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 00:53:57,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:53:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 00:53:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 00:53:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:53:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 00:53:57,598 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 34 [2018-10-24 00:53:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:53:57,599 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 00:53:57,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 00:53:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 00:53:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 00:53:57,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:53:57,607 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:53:57,607 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:53:57,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:53:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1148608533, now seen corresponding path program 1 times [2018-10-24 00:53:57,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:53:57,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:53:57,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:53:57,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:53:57,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:53:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:53:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:53:57,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:53:57,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 00:53:57,895 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:53:57,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 00:53:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 00:53:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 00:53:57,898 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 00:54:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:54:01,176 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-24 00:54:01,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 00:54:01,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-24 00:54:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:54:01,186 INFO L225 Difference]: With dead ends: 1289 [2018-10-24 00:54:01,186 INFO L226 Difference]: Without dead ends: 939 [2018-10-24 00:54:01,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 00:54:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-24 00:54:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-24 00:54:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-24 00:54:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-24 00:54:01,272 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 117 [2018-10-24 00:54:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:54:01,272 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-24 00:54:01,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 00:54:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-24 00:54:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 00:54:01,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:54:01,280 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:54:01,281 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:54:01,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:54:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1243271371, now seen corresponding path program 1 times [2018-10-24 00:54:01,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:54:01,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:01,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:54:01,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:01,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:54:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:54:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:54:01,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:54:01,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:54:01,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:54:01,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:54:01,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:54:01,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:54:01,550 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-24 00:54:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:54:05,268 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-24 00:54:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:54:05,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-24 00:54:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:54:05,287 INFO L225 Difference]: With dead ends: 2537 [2018-10-24 00:54:05,287 INFO L226 Difference]: Without dead ends: 1617 [2018-10-24 00:54:05,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:54:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-24 00:54:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-24 00:54:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-24 00:54:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-24 00:54:05,373 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 133 [2018-10-24 00:54:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:54:05,374 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-24 00:54:05,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:54:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-24 00:54:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 00:54:05,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:54:05,382 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:54:05,382 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:54:05,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:54:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash 505043483, now seen corresponding path program 1 times [2018-10-24 00:54:05,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:54:05,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:05,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:54:05,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:05,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:54:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:54:05,710 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:54:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:54:05,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:54:05,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:54:05,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:54:05,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:54:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:54:05,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:54:05,898 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-24 00:54:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:54:07,178 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-24 00:54:07,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:54:07,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-24 00:54:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:54:07,198 INFO L225 Difference]: With dead ends: 3508 [2018-10-24 00:54:07,198 INFO L226 Difference]: Without dead ends: 1928 [2018-10-24 00:54:07,205 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 [2018-10-24 00:54:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-24 00:54:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-24 00:54:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-24 00:54:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-24 00:54:07,273 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 157 [2018-10-24 00:54:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:54:07,274 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-24 00:54:07,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:54:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-24 00:54:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 00:54:07,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:54:07,281 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:54:07,281 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:54:07,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:54:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash -431970569, now seen corresponding path program 1 times [2018-10-24 00:54:07,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:54:07,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:07,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:54:07,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:54:07,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:54:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:54:07,671 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 00:54:07,870 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 00:54:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:54:08,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:54:08,452 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:54:08,453 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-24 00:54:08,455 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [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], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:54:08,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:54:08,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:54:11,015 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:54:25,211 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:54:25,213 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 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. [2018-10-24 00:54:25,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:54:25,263 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:54:28,579 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-24 00:54:28,579 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:54:53,943 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:54:53,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:54:53,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-10-24 00:54:53,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:54:53,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 00:54:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 00:54:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 00:54:53,946 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 17 states. [2018-10-24 00:57:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:57:51,191 INFO L93 Difference]: Finished difference Result 4671 states and 6734 transitions. [2018-10-24 00:57:51,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 00:57:51,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 197 [2018-10-24 00:57:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:57:51,205 INFO L225 Difference]: With dead ends: 4671 [2018-10-24 00:57:51,205 INFO L226 Difference]: Without dead ends: 2788 [2018-10-24 00:57:51,216 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 153 SyntacticMatches, 28 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-10-24 00:57:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2018-10-24 00:57:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2594. [2018-10-24 00:57:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2018-10-24 00:57:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3439 transitions. [2018-10-24 00:57:51,368 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3439 transitions. Word has length 197 [2018-10-24 00:57:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:57:51,369 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 3439 transitions. [2018-10-24 00:57:51,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 00:57:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3439 transitions. [2018-10-24 00:57:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 00:57:51,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:57:51,377 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:57:51,378 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:57:51,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1907796609, now seen corresponding path program 1 times [2018-10-24 00:57:51,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:57:51,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:51,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:57:51,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:51,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:57:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 00:57:51,683 WARN L187 SmtUtils]: Removed 3 from assertion stack [2018-10-24 00:57:51,684 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:57:51,688 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:57:51,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:57:51 BoogieIcfgContainer [2018-10-24 00:57:51,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:57:51,690 INFO L168 Benchmark]: Toolchain (without parser) took 241586.20 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 2.3 GB in the end (delta: -939.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 00:57:51,691 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:57:51,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.36 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. [2018-10-24 00:57:51,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 224.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 00:57:51,694 INFO L168 Benchmark]: Boogie Preprocessor took 125.98 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:57:51,695 INFO L168 Benchmark]: RCFGBuilder took 3407.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:57:51,696 INFO L168 Benchmark]: TraceAbstraction took 237144.03 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -321.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 00:57:51,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.36 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 224.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.98 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3407.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237144.03 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -321.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was analyzing trace of length 234 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 237.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 187.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 547 SDtfs, 4559 SDslu, 432 SDs, 0 SdLazy, 5319 SolverSat, 1157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 32 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2594occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939829192546584 AbsIntWeakeningRatio, 0.1326530612244898 AbsIntAvgWeakeningVarsNumRemoved, 221.96938775510205 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 277 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 638 NumberOfCodeBlocks, 638 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 633 ConstructedInterpolants, 0 QuantifiedInterpolants, 773858 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 213/215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown