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/Problem02_label47_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:32:11,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:32:11,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:32:11,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:32:11,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:32:11,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:32:11,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:32:11,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:32:11,513 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:32:11,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:32:11,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:32:11,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:32:11,516 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:32:11,517 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:32:11,518 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:32:11,521 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:32:11,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:32:11,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:32:11,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:32:11,536 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:32:11,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:32:11,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:32:11,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:32:11,562 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:32:11,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:32:11,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:32:11,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:32:11,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:32:11,590 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:32:11,590 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:32:11,590 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:32:11,590 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:32:11,591 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:32:11,591 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:32:11,592 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:32:11,592 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:32:11,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:32:11,593 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:32:11,593 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:32:11,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:32:11,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:32:11,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:32:11,595 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:32:11,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:32:11,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:32:11,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:32:11,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:32:11,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:32:11,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:32:11,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:32:11,597 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:32:11,598 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:32:11,598 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:32:11,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:32:11,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:32:11,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:32:11,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:32:11,688 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:32:11,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47_true-unreach-call_false-termination.c [2018-10-24 19:32:11,751 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fb809d72/bf55f39d063c4ccf88340fe0d49cf128/FLAGcc0fd44ec [2018-10-24 19:32:12,331 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:32:12,334 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label47_true-unreach-call_false-termination.c [2018-10-24 19:32:12,351 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fb809d72/bf55f39d063c4ccf88340fe0d49cf128/FLAGcc0fd44ec [2018-10-24 19:32:12,370 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fb809d72/bf55f39d063c4ccf88340fe0d49cf128 [2018-10-24 19:32:12,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:32:12,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:32:12,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:32:12,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:32:12,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:32:12,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:32:12" (1/1) ... [2018-10-24 19:32:12,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a443da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:12, skipping insertion in model container [2018-10-24 19:32:12,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:32:12" (1/1) ... [2018-10-24 19:32:12,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:32:12,473 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:32:12,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:32:12,961 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:32:13,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:32:13,094 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:32:13,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13 WrapperNode [2018-10-24 19:32:13,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:32:13,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:32:13,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:32:13,097 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:32:13,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:32:13,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:32:13,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:32:13,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:32:13,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... [2018-10-24 19:32:13,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:32:13,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:32:13,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:32:13,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:32:13,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:32:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:32:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:32:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:32:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:32:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:32:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:32:13,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:32:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:32:17,217 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:32:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:32:17 BoogieIcfgContainer [2018-10-24 19:32:17,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:32:17,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:32:17,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:32:17,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:32:17,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:32:12" (1/3) ... [2018-10-24 19:32:17,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77200c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:32:17, skipping insertion in model container [2018-10-24 19:32:17,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:13" (2/3) ... [2018-10-24 19:32:17,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77200c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:32:17, skipping insertion in model container [2018-10-24 19:32:17,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:32:17" (3/3) ... [2018-10-24 19:32:17,235 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label47_true-unreach-call_false-termination.c [2018-10-24 19:32:17,247 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:32:17,261 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:32:17,282 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:32:17,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:32:17,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:32:17,339 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:32:17,339 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:32:17,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:32:17,340 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:32:17,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:32:17,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:32:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:32:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 19:32:17,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:17,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:17,424 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:17,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:17,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1596642336, now seen corresponding path program 1 times [2018-10-24 19:32:17,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:17,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:17,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:17,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:17,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:18,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:18,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:32:18,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:18,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:32:18,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:32:18,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:32:18,213 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:32:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:20,045 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-24 19:32:20,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:32:20,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-10-24 19:32:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:20,067 INFO L225 Difference]: With dead ends: 627 [2018-10-24 19:32:20,067 INFO L226 Difference]: Without dead ends: 388 [2018-10-24 19:32:20,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:32:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-24 19:32:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-24 19:32:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-24 19:32:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-24 19:32:20,158 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 114 [2018-10-24 19:32:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:20,159 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-24 19:32:20,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:32:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-24 19:32:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 19:32:20,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:20,170 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:20,170 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:20,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash -425024083, now seen corresponding path program 1 times [2018-10-24 19:32:20,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:20,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:20,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:20,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:20,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:20,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:20,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:32:20,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:20,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:32:20,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:32:20,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:20,905 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-10-24 19:32:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:22,747 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-10-24 19:32:22,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:32:22,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-10-24 19:32:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:22,755 INFO L225 Difference]: With dead ends: 905 [2018-10-24 19:32:22,755 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:32:22,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:32:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 19:32:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:32:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-10-24 19:32:22,797 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 123 [2018-10-24 19:32:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:22,798 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-10-24 19:32:22,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:32:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-10-24 19:32:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 19:32:22,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:22,805 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:22,805 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:22,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash 391088041, now seen corresponding path program 1 times [2018-10-24 19:32:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:22,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:22,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:22,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:22,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:32:22,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:22,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:32:22,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:32:22,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:32:22,983 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-10-24 19:32:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:25,608 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-10-24 19:32:25,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:32:25,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 19:32:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:25,627 INFO L225 Difference]: With dead ends: 1241 [2018-10-24 19:32:25,627 INFO L226 Difference]: Without dead ends: 865 [2018-10-24 19:32:25,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:32:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-24 19:32:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-10-24 19:32:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-10-24 19:32:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-10-24 19:32:25,709 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 125 [2018-10-24 19:32:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:25,710 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-10-24 19:32:25,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:32:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-10-24 19:32:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 19:32:25,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:25,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:25,715 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:25,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:25,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2039626074, now seen corresponding path program 1 times [2018-10-24 19:32:25,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:25,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:25,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:25,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:25,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:26,180 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 19:32:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:26,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:26,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:32:26,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:26,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:32:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:32:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:26,289 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 5 states. [2018-10-24 19:32:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:28,470 INFO L93 Difference]: Finished difference Result 1775 states and 2790 transitions. [2018-10-24 19:32:28,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:32:28,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-24 19:32:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:28,479 INFO L225 Difference]: With dead ends: 1775 [2018-10-24 19:32:28,480 INFO L226 Difference]: Without dead ends: 815 [2018-10-24 19:32:28,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2018-10-24 19:32:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2018-10-24 19:32:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2018-10-24 19:32:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1250 transitions. [2018-10-24 19:32:28,510 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1250 transitions. Word has length 139 [2018-10-24 19:32:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:28,511 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 1250 transitions. [2018-10-24 19:32:28,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:32:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1250 transitions. [2018-10-24 19:32:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 19:32:28,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:28,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:28,515 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:28,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash -916026206, now seen corresponding path program 1 times [2018-10-24 19:32:28,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:28,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:28,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:28,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:28,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:28,947 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 19:32:29,180 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 19:32:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:29,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:29,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:32:29,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:29,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:32:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:32:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:29,275 INFO L87 Difference]: Start difference. First operand 815 states and 1250 transitions. Second operand 5 states. [2018-10-24 19:32:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:30,587 INFO L93 Difference]: Finished difference Result 1765 states and 2745 transitions. [2018-10-24 19:32:30,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:32:30,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-24 19:32:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:30,595 INFO L225 Difference]: With dead ends: 1765 [2018-10-24 19:32:30,595 INFO L226 Difference]: Without dead ends: 808 [2018-10-24 19:32:30,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2018-10-24 19:32:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 806. [2018-10-24 19:32:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2018-10-24 19:32:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1218 transitions. [2018-10-24 19:32:30,623 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1218 transitions. Word has length 141 [2018-10-24 19:32:30,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:30,624 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1218 transitions. [2018-10-24 19:32:30,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:32:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1218 transitions. [2018-10-24 19:32:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 19:32:30,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:30,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:30,628 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:30,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:30,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1064185502, now seen corresponding path program 1 times [2018-10-24 19:32:30,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:30,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:30,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:30,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:30,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:30,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:32:30,849 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:32:30,850 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-10-24 19:32:30,852 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [583], [585], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:32:30,936 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:32:30,937 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:33:03,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:33:03,217 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 19:33:03,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:33:03,232 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:33:08,694 INFO L232 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 83.43% of their original sizes. [2018-10-24 19:33:08,694 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:35:40,798 INFO L413 sIntCurrentIteration]: We have 148 unified AI predicates [2018-10-24 19:35:40,799 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:35:40,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:35:40,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 19:35:40,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:35:40,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:35:40,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:35:40,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:35:40,802 INFO L87 Difference]: Start difference. First operand 806 states and 1218 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:36:33,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 19:36:33,786 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:36:33,793 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:36:33,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:36:33 BoogieIcfgContainer [2018-10-24 19:36:33,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:36:33,794 INFO L168 Benchmark]: Toolchain (without parser) took 261408.46 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 697.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:33,796 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:36:33,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:33,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 263.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:33,798 INFO L168 Benchmark]: Boogie Preprocessor took 97.75 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:36:33,798 INFO L168 Benchmark]: RCFGBuilder took 3763.91 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: 107.2 MB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:33,799 INFO L168 Benchmark]: TraceAbstraction took 256571.03 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -646.3 MB). Peak memory consumption was 630.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:33,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 263.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.75 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3763.91 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: 107.2 MB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256571.03 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -646.3 MB). Peak memory consumption was 630.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 493]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 493). Cancelled while BasicCegarLoop was constructing difference of abstraction (806states) and FLOYD_HOARE automaton (currently 21 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 256.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 62.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 643 SDtfs, 2806 SDslu, 641 SDs, 0 SdLazy, 4280 SolverSat, 741 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 193 GetRequests, 105 SyntacticMatches, 49 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 157.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=818occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 32.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939256468417209 AbsIntWeakeningRatio, 0.22972972972972974 AbsIntAvgWeakeningVarsNumRemoved, 859.4864864864865 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 791 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 794362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 99/101 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown