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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:24,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:24,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:24,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:24,620 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:24,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:24,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:24,625 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:24,626 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:24,627 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:24,628 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:24,629 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:24,630 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:24,630 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:24,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:24,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:24,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:24,636 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:24,638 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:24,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:24,648 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:24,649 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:24,652 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:41:24,660 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 22:41:24,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:24,682 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:24,683 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:24,683 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:24,684 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:24,685 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:24,685 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:24,686 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:24,686 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:24,686 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:24,686 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:24,686 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:24,687 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:24,687 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:24,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:24,688 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:24,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:24,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:24,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:24,689 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:24,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:24,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:24,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:24,691 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:24,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:24,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:24,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:24,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:24,692 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:24,693 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:24,693 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:24,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:24,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:24,694 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:24,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:24,694 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:24,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:24,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:24,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:24,767 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:24,767 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:24,768 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-10-24 22:41:24,833 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62243197a/45723df1384a4d4d9c625092866be596/FLAG76e2eaf12 [2018-10-24 22:41:25,592 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:25,593 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-10-24 22:41:25,611 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62243197a/45723df1384a4d4d9c625092866be596/FLAG76e2eaf12 [2018-10-24 22:41:25,627 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62243197a/45723df1384a4d4d9c625092866be596 [2018-10-24 22:41:25,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:25,641 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:25,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:25,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:25,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:25,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:25" (1/1) ... [2018-10-24 22:41:25,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131b7c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:25, skipping insertion in model container [2018-10-24 22:41:25,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:25" (1/1) ... [2018-10-24 22:41:25,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:25,747 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:26,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:26,483 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:26,803 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:26,827 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:26,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26 WrapperNode [2018-10-24 22:41:26,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:26,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:26,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:26,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:26,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:26,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:27,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:27,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:27,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:27,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (1/1) ... [2018-10-24 22:41:27,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:27,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:27,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:27,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:27,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (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 22:41:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:32,043 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:32,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:32 BoogieIcfgContainer [2018-10-24 22:41:32,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:32,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:32,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:32,049 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:32,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:25" (1/3) ... [2018-10-24 22:41:32,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ea8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:32, skipping insertion in model container [2018-10-24 22:41:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:26" (2/3) ... [2018-10-24 22:41:32,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ea8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:32, skipping insertion in model container [2018-10-24 22:41:32,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:32" (3/3) ... [2018-10-24 22:41:32,054 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13_false-unreach-call.c [2018-10-24 22:41:32,065 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:32,076 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:32,096 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:32,148 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:32,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:32,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:32,149 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:32,149 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:32,149 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:32,149 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:32,149 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 22:41:32,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:32,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:32,228 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:32,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257777, now seen corresponding path program 1 times [2018-10-24 22:41:32,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:32,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:32,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:33,334 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 22:41:33,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:33,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:33,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:33,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:33,366 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 22:41:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:35,400 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-24 22:41:35,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:35,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2018-10-24 22:41:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:35,428 INFO L225 Difference]: With dead ends: 838 [2018-10-24 22:41:35,428 INFO L226 Difference]: Without dead ends: 524 [2018-10-24 22:41:35,437 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 22:41:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-24 22:41:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-24 22:41:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-24 22:41:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-24 22:41:35,535 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 162 [2018-10-24 22:41:35,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:35,536 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-24 22:41:35,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-24 22:41:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 22:41:35,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:35,554 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:35,554 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:35,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash -179109864, now seen corresponding path program 1 times [2018-10-24 22:41:35,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:35,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:35,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:35,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:35,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:35,919 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:35,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:35,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:35,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:36,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:36,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:36,001 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-24 22:41:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:39,612 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-24 22:41:39,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:39,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-24 22:41:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:39,629 INFO L225 Difference]: With dead ends: 1581 [2018-10-24 22:41:39,630 INFO L226 Difference]: Without dead ends: 1065 [2018-10-24 22:41:39,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-24 22:41:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-24 22:41:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 22:41:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-24 22:41:39,710 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 172 [2018-10-24 22:41:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:39,711 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-24 22:41:39,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-24 22:41:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 22:41:39,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:39,717 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:39,717 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:39,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash 375781109, now seen corresponding path program 1 times [2018-10-24 22:41:39,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:39,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:39,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:39,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:39,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:40,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:40,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:40,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:40,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:40,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:40,041 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-24 22:41:43,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:43,501 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-24 22:41:43,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:43,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-10-24 22:41:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:43,523 INFO L225 Difference]: With dead ends: 2887 [2018-10-24 22:41:43,524 INFO L226 Difference]: Without dead ends: 1870 [2018-10-24 22:41:43,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-24 22:41:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-24 22:41:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-24 22:41:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-24 22:41:43,584 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 175 [2018-10-24 22:41:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:43,585 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-24 22:41:43,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-24 22:41:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 22:41:43,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:43,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:43,592 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:43,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash -879878394, now seen corresponding path program 1 times [2018-10-24 22:41:43,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:43,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:43,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:43,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:43,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:43,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:43,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:43,909 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:43,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:43,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:43,910 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-10-24 22:41:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:45,700 INFO L93 Difference]: Finished difference Result 5412 states and 9175 transitions. [2018-10-24 22:41:45,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:45,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-10-24 22:41:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:45,730 INFO L225 Difference]: With dead ends: 5412 [2018-10-24 22:41:45,731 INFO L226 Difference]: Without dead ends: 3553 [2018-10-24 22:41:45,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-10-24 22:41:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3551. [2018-10-24 22:41:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2018-10-24 22:41:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5637 transitions. [2018-10-24 22:41:45,943 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5637 transitions. Word has length 195 [2018-10-24 22:41:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:45,944 INFO L481 AbstractCegarLoop]: Abstraction has 3551 states and 5637 transitions. [2018-10-24 22:41:45,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5637 transitions. [2018-10-24 22:41:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 22:41:45,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:45,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:45,958 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:45,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:45,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1511937120, now seen corresponding path program 1 times [2018-10-24 22:41:45,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:45,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:45,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:46,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:46,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:46,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:46,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:46,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:46,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:46,170 INFO L87 Difference]: Start difference. First operand 3551 states and 5637 transitions. Second operand 6 states. [2018-10-24 22:41:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:48,296 INFO L93 Difference]: Finished difference Result 8962 states and 15042 transitions. [2018-10-24 22:41:48,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:41:48,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2018-10-24 22:41:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:48,336 INFO L225 Difference]: With dead ends: 8962 [2018-10-24 22:41:48,337 INFO L226 Difference]: Without dead ends: 5417 [2018-10-24 22:41:48,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2018-10-24 22:41:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5329. [2018-10-24 22:41:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5329 states. [2018-10-24 22:41:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 7602 transitions. [2018-10-24 22:41:48,545 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 7602 transitions. Word has length 200 [2018-10-24 22:41:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:48,545 INFO L481 AbstractCegarLoop]: Abstraction has 5329 states and 7602 transitions. [2018-10-24 22:41:48,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 7602 transitions. [2018-10-24 22:41:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 22:41:48,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:48,565 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, 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 22:41:48,565 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:48,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1095155627, now seen corresponding path program 1 times [2018-10-24 22:41:48,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:48,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:48,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:48,907 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:41:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:48,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:48,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:48,995 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:48,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:48,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:48,997 INFO L87 Difference]: Start difference. First operand 5329 states and 7602 transitions. Second operand 6 states. [2018-10-24 22:41:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:51,156 INFO L93 Difference]: Finished difference Result 11197 states and 16329 transitions. [2018-10-24 22:41:51,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:41:51,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-10-24 22:41:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:51,187 INFO L225 Difference]: With dead ends: 11197 [2018-10-24 22:41:51,188 INFO L226 Difference]: Without dead ends: 5874 [2018-10-24 22:41:51,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2018-10-24 22:41:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5601. [2018-10-24 22:41:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2018-10-24 22:41:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7541 transitions. [2018-10-24 22:41:51,391 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7541 transitions. Word has length 221 [2018-10-24 22:41:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:51,391 INFO L481 AbstractCegarLoop]: Abstraction has 5601 states and 7541 transitions. [2018-10-24 22:41:51,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7541 transitions. [2018-10-24 22:41:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 22:41:51,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:51,416 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:51,416 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:51,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:51,417 INFO L82 PathProgramCache]: Analyzing trace with hash 986428583, now seen corresponding path program 1 times [2018-10-24 22:41:51,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:51,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:51,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:52,088 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 22:41:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:52,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:41:52,473 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:41:52,474 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-24 22:41:52,479 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [757], [759], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:41:52,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:41:52,555 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:41:53,711 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:41:53,713 INFO L272 AbstractInterpreter]: Visited 163 different actions 163 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:41:53,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:53,758 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:41:55,024 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 70.68% of their original sizes. [2018-10-24 22:41:55,025 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:41:55,607 INFO L413 sIntCurrentIteration]: We have 233 unified AI predicates [2018-10-24 22:41:55,607 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:41:55,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:41:55,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-24 22:41:55,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:55,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 22:41:55,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 22:41:55,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:41:55,610 INFO L87 Difference]: Start difference. First operand 5601 states and 7541 transitions. Second operand 13 states. [2018-10-24 22:42:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:47,849 INFO L93 Difference]: Finished difference Result 11406 states and 15355 transitions. [2018-10-24 22:42:47,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:42:47,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 234 [2018-10-24 22:42:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:47,876 INFO L225 Difference]: With dead ends: 11406 [2018-10-24 22:42:47,877 INFO L226 Difference]: Without dead ends: 5811 [2018-10-24 22:42:47,892 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:42:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2018-10-24 22:42:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5809. [2018-10-24 22:42:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2018-10-24 22:42:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 7758 transitions. [2018-10-24 22:42:48,036 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 7758 transitions. Word has length 234 [2018-10-24 22:42:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:48,036 INFO L481 AbstractCegarLoop]: Abstraction has 5809 states and 7758 transitions. [2018-10-24 22:42:48,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 22:42:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 7758 transitions. [2018-10-24 22:42:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-24 22:42:48,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:48,059 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:48,059 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:48,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash -712795396, now seen corresponding path program 1 times [2018-10-24 22:42:48,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:48,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:48,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:48,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:48,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:48,673 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 22:42:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:48,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:48,913 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:48,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-24 22:42:48,915 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [757], [759], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:48,929 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:48,930 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:51,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:51,918 INFO L272 AbstractInterpreter]: Visited 166 different actions 331 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:42:51,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:51,925 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:55,758 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-24 22:42:55,758 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:02,882 INFO L413 sIntCurrentIteration]: We have 242 unified AI predicates [2018-10-24 22:43:02,883 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:02,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:02,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 22:43:02,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:02,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 22:43:02,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 22:43:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:43:02,885 INFO L87 Difference]: Start difference. First operand 5809 states and 7758 transitions. Second operand 11 states. [2018-10-24 22:44:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:12,699 INFO L93 Difference]: Finished difference Result 17600 states and 24112 transitions. [2018-10-24 22:44:12,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 22:44:12,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 243 [2018-10-24 22:44:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:12,734 INFO L225 Difference]: With dead ends: 17600 [2018-10-24 22:44:12,734 INFO L226 Difference]: Without dead ends: 12005 [2018-10-24 22:44:12,755 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 246 GetRequests, 92 SyntacticMatches, 141 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-24 22:44:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12005 states. [2018-10-24 22:44:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12005 to 11990. [2018-10-24 22:44:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11990 states. [2018-10-24 22:44:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11990 states to 11990 states and 15440 transitions. [2018-10-24 22:44:13,013 INFO L78 Accepts]: Start accepts. Automaton has 11990 states and 15440 transitions. Word has length 243 [2018-10-24 22:44:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:13,014 INFO L481 AbstractCegarLoop]: Abstraction has 11990 states and 15440 transitions. [2018-10-24 22:44:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 22:44:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 11990 states and 15440 transitions. [2018-10-24 22:44:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 22:44:13,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:13,042 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:13,042 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:13,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:13,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1882485320, now seen corresponding path program 1 times [2018-10-24 22:44:13,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:13,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:13,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 102 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:13,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:13,388 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:13,388 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-24 22:44:13,389 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [757], [759], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:13,396 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:13,396 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:14,220 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:44:14,221 INFO L272 AbstractInterpreter]: Visited 167 different actions 328 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:44:14,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:14,230 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:44:15,384 INFO L232 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 70.76% of their original sizes. [2018-10-24 22:44:15,385 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:44:15,767 INFO L413 sIntCurrentIteration]: We have 245 unified AI predicates [2018-10-24 22:44:15,767 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:44:15,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:44:15,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [10] total 29 [2018-10-24 22:44:15,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:44:15,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 22:44:15,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 22:44:15,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-10-24 22:44:15,769 INFO L87 Difference]: Start difference. First operand 11990 states and 15440 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 22:45:33,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 22:45:33,628 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:33,634 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:33,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:33 BoogieIcfgContainer [2018-10-24 22:45:33,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:33,635 INFO L168 Benchmark]: Toolchain (without parser) took 247995.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,637 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:45:33,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1186.11 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,639 INFO L168 Benchmark]: Boogie Preprocessor took 150.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,640 INFO L168 Benchmark]: RCFGBuilder took 4747.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.1 MB). Peak memory consumption was 258.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,641 INFO L168 Benchmark]: TraceAbstraction took 241589.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -527.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1186.11 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 317.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4747.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.1 MB). Peak memory consumption was 258.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241589.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -527.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1500]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1500). Cancelled while BasicCegarLoop was constructing difference of abstraction (11990states) and FLOYD_HOARE automaton (currently 13 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (8517 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 241.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 215.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2426 SDtfs, 9540 SDslu, 1771 SDs, 0 SdLazy, 15826 SolverSat, 1432 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 168.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 777 GetRequests, 553 SyntacticMatches, 147 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11990occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9990218560848211 AbsIntWeakeningRatio, 0.2638888888888889 AbsIntAvgWeakeningVarsNumRemoved, 19.991666666666667 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 429 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1848 NumberOfCodeBlocks, 1848 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1839 ConstructedInterpolants, 0 QuantifiedInterpolants, 1225394 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 412/446 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown