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/Problem15_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:09:06,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:09:06,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:09:06,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:09:06,357 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:09:06,358 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:09:06,359 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:09:06,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:09:06,362 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:09:06,363 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:09:06,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:09:06,364 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:09:06,365 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:09:06,366 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:09:06,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:09:06,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:09:06,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:09:06,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:09:06,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:09:06,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:09:06,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:09:06,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:09:06,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:09:06,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:09:06,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:09:06,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:09:06,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:09:06,389 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 [2018-10-27 03:09:06,404 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:09:06,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:09:06,406 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:09:06,406 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:09:06,406 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:09:06,406 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:09:06,407 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:09:06,407 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:09:06,407 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:09:06,407 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:09:06,407 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:09:06,408 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:09:06,408 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:09:06,409 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:09:06,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:09:06,410 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:09:06,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:09:06,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:09:06,410 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:09:06,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:09:06,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:09:06,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:09:06,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:09:06,411 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:09:06,412 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:09:06,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:09:06,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:09:06,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:09:06,412 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:09:06,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:09:06,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:09:06,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:09:06,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:09:06,485 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:09:06,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-10-27 03:09:06,551 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f04e38c55/08bbb441cf8b4527af02e69ecd16f82f/FLAG7f52a31b6 [2018-10-27 03:09:07,214 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:09:07,215 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-10-27 03:09:07,237 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f04e38c55/08bbb441cf8b4527af02e69ecd16f82f/FLAG7f52a31b6 [2018-10-27 03:09:07,255 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f04e38c55/08bbb441cf8b4527af02e69ecd16f82f [2018-10-27 03:09:07,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:09:07,268 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:09:07,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:09:07,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:09:07,274 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:09:07,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:09:07" (1/1) ... [2018-10-27 03:09:07,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e875f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:07, skipping insertion in model container [2018-10-27 03:09:07,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:09:07" (1/1) ... [2018-10-27 03:09:07,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:09:07,376 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:09:08,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:09:08,309 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:09:08,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:09:08,680 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:09:08,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08 WrapperNode [2018-10-27 03:09:08,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:09:08,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:09:08,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:09:08,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:09:08,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:08,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:09:09,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:09:09,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:09:09,071 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:09:09,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (1/1) ... [2018-10-27 03:09:09,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:09:09,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:09:09,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:09:09,288 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:09:09,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (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 [2018-10-27 03:09:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:09:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:09:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:09:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:09:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:09:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:09:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:09:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:09:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:09:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:09:17,459 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:09:17,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:09:17 BoogieIcfgContainer [2018-10-27 03:09:17,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:09:17,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:09:17,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:09:17,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:09:17,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:09:07" (1/3) ... [2018-10-27 03:09:17,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628594c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:09:17, skipping insertion in model container [2018-10-27 03:09:17,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:09:08" (2/3) ... [2018-10-27 03:09:17,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628594c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:09:17, skipping insertion in model container [2018-10-27 03:09:17,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:09:17" (3/3) ... [2018-10-27 03:09:17,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label08_true-unreach-call.c [2018-10-27 03:09:17,481 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:09:17,492 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:09:17,510 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:09:17,553 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:09:17,554 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:09:17,554 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:09:17,554 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:09:17,554 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:09:17,554 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:09:17,554 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:09:17,555 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:09:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 03:09:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-27 03:09:17,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:09:17,599 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:09:17,601 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:09:17,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:09:17,608 INFO L82 PathProgramCache]: Analyzing trace with hash -561435596, now seen corresponding path program 1 times [2018-10-27 03:09:17,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:09:17,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:17,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:09:17,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:17,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:09:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:09:18,104 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:09:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:09:18,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:09:18,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:09:18,224 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:09:18,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:09:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:09:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:09:18,259 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-27 03:09:22,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:09:22,849 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-10-27 03:09:22,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:09:22,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-10-27 03:09:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:09:22,890 INFO L225 Difference]: With dead ends: 1194 [2018-10-27 03:09:22,890 INFO L226 Difference]: Without dead ends: 754 [2018-10-27 03:09:22,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:09:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-27 03:09:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-10-27 03:09:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-10-27 03:09:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-10-27 03:09:23,065 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 58 [2018-10-27 03:09:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:09:23,066 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-10-27 03:09:23,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:09:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-10-27 03:09:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 03:09:23,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:09:23,075 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:09:23,075 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:09:23,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:09:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1198310345, now seen corresponding path program 1 times [2018-10-27 03:09:23,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:09:23,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:23,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:09:23,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:23,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:09:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:09:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:09:23,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:09:23,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:09:23,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:09:23,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:09:23,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:09:23,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:09:23,430 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-10-27 03:09:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:09:38,283 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-10-27 03:09:38,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:09:38,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-27 03:09:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:09:38,304 INFO L225 Difference]: With dead ends: 2839 [2018-10-27 03:09:38,304 INFO L226 Difference]: Without dead ends: 2093 [2018-10-27 03:09:38,313 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 [2018-10-27 03:09:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-10-27 03:09:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2055. [2018-10-27 03:09:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2018-10-27 03:09:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3404 transitions. [2018-10-27 03:09:38,414 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3404 transitions. Word has length 132 [2018-10-27 03:09:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:09:38,415 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 3404 transitions. [2018-10-27 03:09:38,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:09:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3404 transitions. [2018-10-27 03:09:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 03:09:38,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:09:38,425 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:09:38,425 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:09:38,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:09:38,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1211406466, now seen corresponding path program 1 times [2018-10-27 03:09:38,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:09:38,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:38,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:09:38,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:38,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:09:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:09:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:09:38,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:09:38,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:09:38,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:09:38,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:09:38,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:09:38,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:09:38,726 INFO L87 Difference]: Start difference. First operand 2055 states and 3404 transitions. Second operand 5 states. [2018-10-27 03:09:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:09:46,074 INFO L93 Difference]: Finished difference Result 6122 states and 10301 transitions. [2018-10-27 03:09:46,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:09:46,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-10-27 03:09:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:09:46,120 INFO L225 Difference]: With dead ends: 6122 [2018-10-27 03:09:46,121 INFO L226 Difference]: Without dead ends: 4073 [2018-10-27 03:09:46,130 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 [2018-10-27 03:09:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-10-27 03:09:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3996. [2018-10-27 03:09:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2018-10-27 03:09:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 5874 transitions. [2018-10-27 03:09:46,267 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 5874 transitions. Word has length 135 [2018-10-27 03:09:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:09:46,268 INFO L481 AbstractCegarLoop]: Abstraction has 3996 states and 5874 transitions. [2018-10-27 03:09:46,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:09:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 5874 transitions. [2018-10-27 03:09:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 03:09:46,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:09:46,271 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:09:46,272 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:09:46,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:09:46,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1183440816, now seen corresponding path program 1 times [2018-10-27 03:09:46,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:09:46,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:46,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:09:46,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:46,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:09:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:09:46,538 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:09:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:09:46,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:09:46,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:09:46,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:09:46,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:09:46,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:09:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:09:46,836 INFO L87 Difference]: Start difference. First operand 3996 states and 5874 transitions. Second operand 6 states. [2018-10-27 03:09:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:09:53,802 INFO L93 Difference]: Finished difference Result 11083 states and 16941 transitions. [2018-10-27 03:09:53,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:09:53,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 03:09:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:09:53,856 INFO L225 Difference]: With dead ends: 11083 [2018-10-27 03:09:53,856 INFO L226 Difference]: Without dead ends: 7093 [2018-10-27 03:09:53,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:09:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2018-10-27 03:09:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6984. [2018-10-27 03:09:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2018-10-27 03:09:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9527 transitions. [2018-10-27 03:09:54,142 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9527 transitions. Word has length 145 [2018-10-27 03:09:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:09:54,143 INFO L481 AbstractCegarLoop]: Abstraction has 6984 states and 9527 transitions. [2018-10-27 03:09:54,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:09:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9527 transitions. [2018-10-27 03:09:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 03:09:54,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:09:54,147 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:09:54,148 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:09:54,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:09:54,148 INFO L82 PathProgramCache]: Analyzing trace with hash 984930483, now seen corresponding path program 1 times [2018-10-27 03:09:54,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:09:54,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:54,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:09:54,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:09:54,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:09:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:09:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:09:54,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:09:54,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:09:54,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:09:54,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:09:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:09:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:09:54,625 INFO L87 Difference]: Start difference. First operand 6984 states and 9527 transitions. Second operand 5 states. [2018-10-27 03:10:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:10:08,228 INFO L93 Difference]: Finished difference Result 18666 states and 26327 transitions. [2018-10-27 03:10:08,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:10:08,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-27 03:10:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:10:08,296 INFO L225 Difference]: With dead ends: 18666 [2018-10-27 03:10:08,296 INFO L226 Difference]: Without dead ends: 11688 [2018-10-27 03:10:08,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:10:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2018-10-27 03:10:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 11527. [2018-10-27 03:10:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11527 states. [2018-10-27 03:10:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 15503 transitions. [2018-10-27 03:10:08,633 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 15503 transitions. Word has length 155 [2018-10-27 03:10:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:10:08,634 INFO L481 AbstractCegarLoop]: Abstraction has 11527 states and 15503 transitions. [2018-10-27 03:10:08,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:10:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 15503 transitions. [2018-10-27 03:10:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 03:10:08,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:10:08,639 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:10:08,639 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:10:08,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:10:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash 528602966, now seen corresponding path program 1 times [2018-10-27 03:10:08,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:10:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:10:08,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:10:08,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:10:08,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:10:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:10:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:10:09,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:10:09,148 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:10:09,149 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-27 03:10:09,151 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [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] [2018-10-27 03:10:09,235 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:10:09,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:10:11,811 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:10:11,813 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:10:11,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:10:11,826 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:10:13,446 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 78.46% of their original sizes. [2018-10-27 03:10:13,446 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:10:13,866 INFO L415 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2018-10-27 03:10:13,866 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:10:13,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:10:13,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-27 03:10:13,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:10:13,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:10:13,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:10:13,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:10:13,869 INFO L87 Difference]: Start difference. First operand 11527 states and 15503 transitions. Second operand 8 states. [2018-10-27 03:10:18,057 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:11:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:11:41,359 INFO L93 Difference]: Finished difference Result 23041 states and 30996 transitions. [2018-10-27 03:11:41,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:11:41,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2018-10-27 03:11:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:11:41,407 INFO L225 Difference]: With dead ends: 23041 [2018-10-27 03:11:41,408 INFO L226 Difference]: Without dead ends: 11520 [2018-10-27 03:11:41,446 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:11:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2018-10-27 03:11:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 11518. [2018-10-27 03:11:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11518 states. [2018-10-27 03:11:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 15462 transitions. [2018-10-27 03:11:41,702 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 15462 transitions. Word has length 170 [2018-10-27 03:11:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:11:41,703 INFO L481 AbstractCegarLoop]: Abstraction has 11518 states and 15462 transitions. [2018-10-27 03:11:41,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 03:11:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 15462 transitions. [2018-10-27 03:11:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-27 03:11:41,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:11:41,710 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:11:41,710 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:11:41,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:11:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1907556257, now seen corresponding path program 1 times [2018-10-27 03:11:41,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:11:41,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:11:41,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:11:41,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:11:41,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:11:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:11:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:11:43,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:11:43,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:11:43,062 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-27 03:11:43,062 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [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] [2018-10-27 03:11:43,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:11:43,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:11:44,160 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:11:51,609 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:11:51,609 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. [2018-10-27 03:11:51,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:11:51,617 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:11:54,750 INFO L227 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 78.02% of their original sizes. [2018-10-27 03:11:54,751 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 03:13:01,307 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:13:01,312 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:13:01,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:13:01 BoogieIcfgContainer [2018-10-27 03:13:01,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:13:01,314 INFO L168 Benchmark]: Toolchain (without parser) took 234046.95 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -108.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,315 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-27 03:13:01,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1411.35 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: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 388.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,318 INFO L168 Benchmark]: Boogie Preprocessor took 216.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,318 INFO L168 Benchmark]: RCFGBuilder took 8172.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 304.4 MB). Peak memory consumption was 304.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,319 INFO L168 Benchmark]: TraceAbstraction took 223851.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 320.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 03:13:01,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1411.35 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: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 388.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8172.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 304.4 MB). Peak memory consumption was 304.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223851.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 320.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 267 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 135.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1326 SDtfs, 7142 SDslu, 1561 SDs, 0 SdLazy, 13668 SolverSat, 2773 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11527occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953499632672143 AbsIntWeakeningRatio, 0.10599078341013825 AbsIntAvgWeakeningVarsNumRemoved, 398.42396313364054 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 389 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 795 NumberOfCodeBlocks, 795 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 366304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 204/255 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown