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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:25:04,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:25:04,377 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:25:04,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:25:04,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:25:04,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:25:04,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:25:04,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:25:04,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:25:04,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:25:04,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:25:04,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:25:04,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:25:04,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:25:04,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:25:04,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:25:04,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:25:04,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:25:04,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:25:04,408 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:25:04,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:25:04,411 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:25:04,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:25:04,423 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:25:04,423 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:25:04,424 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:25:04,428 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:25:04,429 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:25:04,456 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:25:04,457 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:25:04,458 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:25:04,458 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:25:04,459 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:25:04,459 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:25:04,459 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:25:04,459 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:25:04,459 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:25:04,462 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:25:04,462 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:25:04,462 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:25:04,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:25:04,464 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:25:04,464 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:25:04,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:25:04,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:25:04,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:25:04,466 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:25:04,466 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:25:04,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:25:04,467 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:25:04,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:25:04,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:25:04,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:25:04,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:25:04,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:25:04,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:25:04,468 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:25:04,469 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:25:04,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:25:04,469 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:25:04,469 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:25:04,469 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:25:04,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:25:04,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:25:04,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:25:04,565 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:25:04,565 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:25:04,566 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-07 00:25:04,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea65be3f/6156dacd33d74ccf8f920e8be8729d61/FLAG9651a759b [2018-11-07 00:25:05,319 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:25:05,320 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-07 00:25:05,348 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea65be3f/6156dacd33d74ccf8f920e8be8729d61/FLAG9651a759b [2018-11-07 00:25:05,369 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea65be3f/6156dacd33d74ccf8f920e8be8729d61 [2018-11-07 00:25:05,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:25:05,385 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:25:05,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:25:05,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:25:05,392 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:25:05,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:05" (1/1) ... [2018-11-07 00:25:05,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1ffad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:05, skipping insertion in model container [2018-11-07 00:25:05,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:05" (1/1) ... [2018-11-07 00:25:05,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:25:05,490 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:25:06,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:25:06,301 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:25:06,599 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:25:06,623 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:25:06,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06 WrapperNode [2018-11-07 00:25:06,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:25:06,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:25:06,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:25:06,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:25:06,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:25:06,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:25:06,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:25:06,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:25:06,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:06,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (1/1) ... [2018-11-07 00:25:07,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:25:07,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:25:07,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:25:07,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:25:07,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (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 [2018-11-07 00:25:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:25:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:25:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:25:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:25:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:25:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:25:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:25:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:25:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:25:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:25:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:25:13,453 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:25:13,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:13 BoogieIcfgContainer [2018-11-07 00:25:13,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:25:13,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:25:13,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:25:13,459 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:25:13,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:05" (1/3) ... [2018-11-07 00:25:13,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caa7193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:13, skipping insertion in model container [2018-11-07 00:25:13,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:06" (2/3) ... [2018-11-07 00:25:13,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caa7193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:13, skipping insertion in model container [2018-11-07 00:25:13,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:13" (3/3) ... [2018-11-07 00:25:13,463 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label29_false-unreach-call.c [2018-11-07 00:25:13,474 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:25:13,483 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:25:13,501 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:25:13,544 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:25:13,544 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:25:13,545 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:25:13,545 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:25:13,545 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:25:13,545 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:25:13,545 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:25:13,545 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:25:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 00:25:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 00:25:13,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:13,589 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] [2018-11-07 00:25:13,591 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:13,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:13,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1800522660, now seen corresponding path program 1 times [2018-11-07 00:25:13,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:13,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:13,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:13,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:13,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:14,070 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:25:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:14,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:25:14,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:25:14,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:14,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:25:14,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:25:14,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:25:14,217 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 00:25:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:17,378 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-11-07 00:25:17,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:25:17,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-07 00:25:17,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:17,406 INFO L225 Difference]: With dead ends: 1194 [2018-11-07 00:25:17,406 INFO L226 Difference]: Without dead ends: 754 [2018-11-07 00:25:17,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:25:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-07 00:25:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-11-07 00:25:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-07 00:25:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-11-07 00:25:17,561 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 28 [2018-11-07 00:25:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:17,562 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-11-07 00:25:17,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:25:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-11-07 00:25:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 00:25:17,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:17,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:17,569 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:17,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:17,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1795100031, now seen corresponding path program 1 times [2018-11-07 00:25:17,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:17,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:17,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:17,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:17,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:17,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:25:17,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:25:17,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:17,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:25:17,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:25:17,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:25:17,893 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-11-07 00:25:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:26,705 INFO L93 Difference]: Finished difference Result 2839 states and 5160 transitions. [2018-11-07 00:25:26,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:25:26,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 00:25:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:26,724 INFO L225 Difference]: With dead ends: 2839 [2018-11-07 00:25:26,724 INFO L226 Difference]: Without dead ends: 2093 [2018-11-07 00:25:26,732 INFO L604 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 [2018-11-07 00:25:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-07 00:25:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2054. [2018-11-07 00:25:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2018-11-07 00:25:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3400 transitions. [2018-11-07 00:25:26,837 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3400 transitions. Word has length 102 [2018-11-07 00:25:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:26,838 INFO L480 AbstractCegarLoop]: Abstraction has 2054 states and 3400 transitions. [2018-11-07 00:25:26,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:25:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3400 transitions. [2018-11-07 00:25:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-07 00:25:26,847 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:26,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:26,850 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:26,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1736818506, now seen corresponding path program 1 times [2018-11-07 00:25:26,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:26,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:26,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:26,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:27,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:25:27,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:25:27,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:27,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:25:27,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:25:27,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:25:27,087 INFO L87 Difference]: Start difference. First operand 2054 states and 3400 transitions. Second operand 5 states. [2018-11-07 00:25:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:32,019 INFO L93 Difference]: Finished difference Result 6124 states and 10298 transitions. [2018-11-07 00:25:32,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:25:32,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-07 00:25:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:32,057 INFO L225 Difference]: With dead ends: 6124 [2018-11-07 00:25:32,058 INFO L226 Difference]: Without dead ends: 4076 [2018-11-07 00:25:32,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:25:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2018-11-07 00:25:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3990. [2018-11-07 00:25:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3990 states. [2018-11-07 00:25:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5864 transitions. [2018-11-07 00:25:32,205 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5864 transitions. Word has length 105 [2018-11-07 00:25:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:32,206 INFO L480 AbstractCegarLoop]: Abstraction has 3990 states and 5864 transitions. [2018-11-07 00:25:32,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:25:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5864 transitions. [2018-11-07 00:25:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 00:25:32,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:32,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:32,210 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:32,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash 895222520, now seen corresponding path program 1 times [2018-11-07 00:25:32,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:32,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:32,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:32,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:32,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:32,504 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:25:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:32,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:25:32,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:25:32,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:32,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:25:32,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:25:32,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:25:32,731 INFO L87 Difference]: Start difference. First operand 3990 states and 5864 transitions. Second operand 6 states. [2018-11-07 00:25:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:37,363 INFO L93 Difference]: Finished difference Result 11063 states and 16911 transitions. [2018-11-07 00:25:37,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:25:37,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 00:25:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:37,407 INFO L225 Difference]: With dead ends: 11063 [2018-11-07 00:25:37,407 INFO L226 Difference]: Without dead ends: 7079 [2018-11-07 00:25:37,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:25:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2018-11-07 00:25:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 6978. [2018-11-07 00:25:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2018-11-07 00:25:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 9524 transitions. [2018-11-07 00:25:37,626 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 9524 transitions. Word has length 115 [2018-11-07 00:25:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:37,627 INFO L480 AbstractCegarLoop]: Abstraction has 6978 states and 9524 transitions. [2018-11-07 00:25:37,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:25:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 9524 transitions. [2018-11-07 00:25:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 00:25:37,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:37,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:37,631 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:37,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:37,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1383361339, now seen corresponding path program 1 times [2018-11-07 00:25:37,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:37,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:37,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:37,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:37,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:37,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:25:37,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:25:37,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:37,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:25:37,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:25:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:25:37,985 INFO L87 Difference]: Start difference. First operand 6978 states and 9524 transitions. Second operand 5 states. [2018-11-07 00:25:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:45,506 INFO L93 Difference]: Finished difference Result 18662 states and 26359 transitions. [2018-11-07 00:25:45,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:25:45,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-07 00:25:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:45,579 INFO L225 Difference]: With dead ends: 18662 [2018-11-07 00:25:45,582 INFO L226 Difference]: Without dead ends: 11690 [2018-11-07 00:25:45,618 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:25:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2018-11-07 00:25:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 11544. [2018-11-07 00:25:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11544 states. [2018-11-07 00:25:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 15554 transitions. [2018-11-07 00:25:45,903 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 15554 transitions. Word has length 125 [2018-11-07 00:25:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:45,904 INFO L480 AbstractCegarLoop]: Abstraction has 11544 states and 15554 transitions. [2018-11-07 00:25:45,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:25:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 15554 transitions. [2018-11-07 00:25:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 00:25:45,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:45,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:45,910 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:45,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1389612834, now seen corresponding path program 1 times [2018-11-07 00:25:45,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:45,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:45,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:45,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:45,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:25:46,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:25:46,267 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:25:46,268 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 00:25:46,270 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:25:46,346 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:25:46,346 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:25:48,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:25:48,530 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:25:48,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:48,539 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:25:49,871 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 77.71% of their original sizes. [2018-11-07 00:25:49,871 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:25:50,222 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-11-07 00:25:50,222 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:25:50,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:25:50,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 00:25:50,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:25:50,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:25:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:25:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:25:50,225 INFO L87 Difference]: Start difference. First operand 11544 states and 15554 transitions. Second operand 8 states. [2018-11-07 00:25:53,133 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:27:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:27:21,944 INFO L93 Difference]: Finished difference Result 23075 states and 31099 transitions. [2018-11-07 00:27:21,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:27:21,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2018-11-07 00:27:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:27:21,986 INFO L225 Difference]: With dead ends: 23075 [2018-11-07 00:27:21,986 INFO L226 Difference]: Without dead ends: 11537 [2018-11-07 00:27:22,018 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:27:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11537 states. [2018-11-07 00:27:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11537 to 11535. [2018-11-07 00:27:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11535 states. [2018-11-07 00:27:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11535 states to 11535 states and 15513 transitions. [2018-11-07 00:27:22,245 INFO L78 Accepts]: Start accepts. Automaton has 11535 states and 15513 transitions. Word has length 140 [2018-11-07 00:27:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:27:22,246 INFO L480 AbstractCegarLoop]: Abstraction has 11535 states and 15513 transitions. [2018-11-07 00:27:22,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 00:27:22,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11535 states and 15513 transitions. [2018-11-07 00:27:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 00:27:22,251 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:27:22,251 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:27:22,252 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:27:22,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:27:22,252 INFO L82 PathProgramCache]: Analyzing trace with hash -83318393, now seen corresponding path program 1 times [2018-11-07 00:27:22,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:27:22,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:27:22,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:27:22,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:27:22,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:27:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:27:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:27:22,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:27:22,945 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:27:22,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 00:27:22,945 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:27:22,952 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:27:22,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:27:23,994 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:27:30,167 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:27:30,167 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:27:30,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:27:30,175 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:27:32,543 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 79.8% of their original sizes. [2018-11-07 00:27:32,543 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:28:59,199 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:28:59,204 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:28:59,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:28:59 BoogieIcfgContainer [2018-11-07 00:28:59,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:28:59,206 INFO L168 Benchmark]: Toolchain (without parser) took 233822.37 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 718.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,207 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. [2018-11-07 00:28:59,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1238.14 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,209 INFO L168 Benchmark]: Boogie Preprocessor took 175.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,210 INFO L168 Benchmark]: RCFGBuilder took 6431.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.6 MB). Peak memory consumption was 292.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,211 INFO L168 Benchmark]: TraceAbstraction took 225749.62 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 448.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:28:59,216 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 1238.14 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6431.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.6 MB). Peak memory consumption was 292.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225749.62 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 448.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was analyzing trace of length 237 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 121.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1339 SDtfs, 6933 SDslu, 1691 SDs, 0 SdLazy, 14330 SolverSat, 2638 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 184 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11544occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9946039680694412 AbsIntWeakeningRatio, 0.12299465240641712 AbsIntAvgWeakeningVarsNumRemoved, 395.7967914438503 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 376 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 615 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 609 ConstructedInterpolants, 0 QuantifiedInterpolants, 252824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 84/105 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown