java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:13:16,002 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:13:16,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:13:16,028 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:13:16,029 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:13:16,030 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:13:16,031 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:13:16,033 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:13:16,035 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:13:16,036 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:13:16,037 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:13:16,037 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:13:16,038 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:13:16,039 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:13:16,040 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:13:16,041 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:13:16,042 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:13:16,044 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:13:16,046 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:13:16,048 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:13:16,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:13:16,051 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:13:16,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:13:16,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:13:16,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:13:16,055 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:13:16,056 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:13:16,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:13:16,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:13:16,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:13:16,060 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:13:16,060 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 19:13:16,063 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:13:16,094 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:13:16,094 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:13:16,095 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:13:16,095 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:13:16,096 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:13:16,096 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:13:16,096 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:13:16,096 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:13:16,096 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:13:16,097 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:13:16,097 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:13:16,097 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:13:16,097 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:13:16,098 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:13:16,098 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:13:16,098 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:13:16,098 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:13:16,098 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:13:16,099 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:13:16,099 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:13:16,099 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:13:16,099 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:13:16,099 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:13:16,100 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:13:16,100 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:13:16,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:13:16,100 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:13:16,100 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:13:16,101 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:13:16,102 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:13:16,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:13:16,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:13:16,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:13:16,187 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:13:16,188 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:13:16,189 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label27_true-unreach-call.c [2018-11-12 19:13:16,274 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914502669/95d77b8db59646269ad515809e1270fd/FLAGd22341424 [2018-11-12 19:13:17,001 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:13:17,004 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label27_true-unreach-call.c [2018-11-12 19:13:17,026 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914502669/95d77b8db59646269ad515809e1270fd/FLAGd22341424 [2018-11-12 19:13:17,045 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914502669/95d77b8db59646269ad515809e1270fd [2018-11-12 19:13:17,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:13:17,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:13:17,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:17,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:13:17,062 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:13:17,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:17" (1/1) ... [2018-11-12 19:13:17,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d92fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:17, skipping insertion in model container [2018-11-12 19:13:17,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:17" (1/1) ... [2018-11-12 19:13:17,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:13:17,162 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:13:18,014 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:18,019 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:13:18,308 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:18,332 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:13:18,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18 WrapperNode [2018-11-12 19:13:18,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:18,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:18,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:13:18,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:13:18,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:18,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:13:18,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:13:18,601 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:13:18,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... [2018-11-12 19:13:18,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:13:18,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:13:18,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:13:18,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:13:18,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:13:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:13:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:13:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:13:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:13:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:13:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:13:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:13:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:13:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:13:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:13:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:13:25,167 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:13:25,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:25 BoogieIcfgContainer [2018-11-12 19:13:25,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:13:25,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:13:25,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:13:25,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:13:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:13:17" (1/3) ... [2018-11-12 19:13:25,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a92efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:25, skipping insertion in model container [2018-11-12 19:13:25,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:18" (2/3) ... [2018-11-12 19:13:25,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a92efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:25, skipping insertion in model container [2018-11-12 19:13:25,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:25" (3/3) ... [2018-11-12 19:13:25,177 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label27_true-unreach-call.c [2018-11-12 19:13:25,187 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:13:25,197 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:13:25,216 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:13:25,259 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:13:25,260 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:13:25,260 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:13:25,260 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:13:25,260 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:13:25,260 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:13:25,261 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:13:25,261 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:13:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:13:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-12 19:13:25,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:25,305 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] [2018-11-12 19:13:25,308 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:25,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash 923838876, now seen corresponding path program 1 times [2018-11-12 19:13:25,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:25,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:25,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:25,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:25,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:25,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:25,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:25,811 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:25,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:25,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:25,836 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:13:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:32,262 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 19:13:32,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:32,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-12 19:13:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:32,295 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 19:13:32,295 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 19:13:32,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 19:13:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-12 19:13:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-12 19:13:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-12 19:13:32,479 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 44 [2018-11-12 19:13:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:32,481 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-12 19:13:32,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-12 19:13:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 19:13:32,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:32,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:32,495 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:32,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1568120057, now seen corresponding path program 1 times [2018-11-12 19:13:32,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:32,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:32,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:32,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:32,498 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:32,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:32,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:32,824 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:32,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:32,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:32,827 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-12 19:13:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:37,623 INFO L93 Difference]: Finished difference Result 2757 states and 5143 transitions. [2018-11-12 19:13:37,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:37,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-11-12 19:13:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:37,647 INFO L225 Difference]: With dead ends: 2757 [2018-11-12 19:13:37,648 INFO L226 Difference]: Without dead ends: 2004 [2018-11-12 19:13:37,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2018-11-12 19:13:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1999. [2018-11-12 19:13:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-11-12 19:13:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3239 transitions. [2018-11-12 19:13:37,754 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3239 transitions. Word has length 114 [2018-11-12 19:13:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:37,755 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 3239 transitions. [2018-11-12 19:13:37,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3239 transitions. [2018-11-12 19:13:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-12 19:13:37,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:37,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:37,765 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:37,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash 440789569, now seen corresponding path program 1 times [2018-11-12 19:13:37,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:37,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:37,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:37,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:37,767 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:38,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:38,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:13:38,114 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:38,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:13:38,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:13:38,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:13:38,115 INFO L87 Difference]: Start difference. First operand 1999 states and 3239 transitions. Second operand 5 states. [2018-11-12 19:13:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:45,422 INFO L93 Difference]: Finished difference Result 7361 states and 12132 transitions. [2018-11-12 19:13:45,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:13:45,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2018-11-12 19:13:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:45,467 INFO L225 Difference]: With dead ends: 7361 [2018-11-12 19:13:45,467 INFO L226 Difference]: Without dead ends: 5368 [2018-11-12 19:13:45,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2018-11-12 19:13:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5286. [2018-11-12 19:13:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2018-11-12 19:13:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7073 transitions. [2018-11-12 19:13:45,659 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7073 transitions. Word has length 168 [2018-11-12 19:13:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:45,660 INFO L480 AbstractCegarLoop]: Abstraction has 5286 states and 7073 transitions. [2018-11-12 19:13:45,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:13:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7073 transitions. [2018-11-12 19:13:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-12 19:13:45,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:45,668 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:13:45,668 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:45,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:45,669 INFO L82 PathProgramCache]: Analyzing trace with hash -116991382, now seen corresponding path program 1 times [2018-11-12 19:13:45,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:45,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:45,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:45,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:45,670 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 77 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:13:46,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:46,112 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:46,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-12 19:13:46,115 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:46,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:46,172 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:46,781 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:49,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:49,038 INFO L272 AbstractInterpreter]: Visited 130 different actions 874 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 15759 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15759 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:13:49,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:49,084 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:13:50,664 INFO L227 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-12 19:13:50,664 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:54,966 INFO L415 sIntCurrentIteration]: We unified 263 AI predicates to 263 [2018-11-12 19:13:54,966 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:13:54,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:13:54,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:13:54,967 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:54,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:13:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:13:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:13:54,970 INFO L87 Difference]: Start difference. First operand 5286 states and 7073 transitions. Second operand 19 states. [2018-11-12 19:14:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:57,188 INFO L93 Difference]: Finished difference Result 13696 states and 17798 transitions. [2018-11-12 19:14:57,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 19:14:57,189 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 264 [2018-11-12 19:14:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:57,226 INFO L225 Difference]: With dead ends: 13696 [2018-11-12 19:14:57,226 INFO L226 Difference]: Without dead ends: 8416 [2018-11-12 19:14:57,256 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 277 GetRequests, 166 SyntacticMatches, 81 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:14:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2018-11-12 19:14:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 7924. [2018-11-12 19:14:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-12 19:14:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 9785 transitions. [2018-11-12 19:14:57,434 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 9785 transitions. Word has length 264 [2018-11-12 19:14:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:57,435 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 9785 transitions. [2018-11-12 19:14:57,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:14:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 9785 transitions. [2018-11-12 19:14:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-11-12 19:14:57,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:57,449 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:14:57,449 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:57,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1284673287, now seen corresponding path program 1 times [2018-11-12 19:14:57,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:57,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:57,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:57,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:57,451 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 77 proven. 113 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:14:58,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:58,134 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:58,134 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 350 with the following transitions: [2018-11-12 19:14:58,135 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:58,142 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:58,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:58,260 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:58,675 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:58,676 INFO L272 AbstractInterpreter]: Visited 189 different actions 554 times. Merged at 5 different actions 9 times. Never widened. Performed 10820 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10820 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:14:58,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:58,680 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:00,079 INFO L227 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 77.41% of their original sizes. [2018-11-12 19:15:00,080 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:00,555 INFO L415 sIntCurrentIteration]: We unified 348 AI predicates to 348 [2018-11-12 19:15:00,555 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:00,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:00,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:15:00,556 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:15:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:15:00,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:15:00,558 INFO L87 Difference]: Start difference. First operand 7924 states and 9785 transitions. Second operand 18 states. [2018-11-12 19:15:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:51,243 INFO L93 Difference]: Finished difference Result 15530 states and 19622 transitions. [2018-11-12 19:15:51,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 19:15:51,243 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 349 [2018-11-12 19:15:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:51,293 INFO L225 Difference]: With dead ends: 15530 [2018-11-12 19:15:51,293 INFO L226 Difference]: Without dead ends: 10250 [2018-11-12 19:15:51,317 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 361 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:15:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2018-11-12 19:15:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 9753. [2018-11-12 19:15:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9753 states. [2018-11-12 19:15:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9753 states to 9753 states and 11670 transitions. [2018-11-12 19:15:51,533 INFO L78 Accepts]: Start accepts. Automaton has 9753 states and 11670 transitions. Word has length 349 [2018-11-12 19:15:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:51,534 INFO L480 AbstractCegarLoop]: Abstraction has 9753 states and 11670 transitions. [2018-11-12 19:15:51,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:15:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 9753 states and 11670 transitions. [2018-11-12 19:15:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-12 19:15:51,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:51,555 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:15:51,555 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:51,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash 227326013, now seen corresponding path program 1 times [2018-11-12 19:15:51,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:51,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:51,558 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-12 19:15:52,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:15:52,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:15:52,263 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:52,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:15:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:15:52,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:15:52,264 INFO L87 Difference]: Start difference. First operand 9753 states and 11670 transitions. Second operand 5 states. [2018-11-12 19:15:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:56,103 INFO L93 Difference]: Finished difference Result 20030 states and 25845 transitions. [2018-11-12 19:15:56,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:15:56,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 406 [2018-11-12 19:15:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:56,155 INFO L225 Difference]: With dead ends: 20030 [2018-11-12 19:15:56,155 INFO L226 Difference]: Without dead ends: 14750 [2018-11-12 19:15:56,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:15:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14750 states. [2018-11-12 19:15:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14750 to 14394. [2018-11-12 19:15:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14394 states. [2018-11-12 19:15:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14394 states to 14394 states and 17111 transitions. [2018-11-12 19:15:56,497 INFO L78 Accepts]: Start accepts. Automaton has 14394 states and 17111 transitions. Word has length 406 [2018-11-12 19:15:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:56,498 INFO L480 AbstractCegarLoop]: Abstraction has 14394 states and 17111 transitions. [2018-11-12 19:15:56,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:15:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14394 states and 17111 transitions. [2018-11-12 19:15:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-11-12 19:15:56,526 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:56,526 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:56,527 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:56,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash -39560468, now seen corresponding path program 1 times [2018-11-12 19:15:56,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:56,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:56,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:56,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:56,529 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 40 proven. 140 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:15:57,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:57,898 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:57,899 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 432 with the following transitions: [2018-11-12 19:15:57,899 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:57,919 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:57,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:58,142 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:59,656 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:59,656 INFO L272 AbstractInterpreter]: Visited 284 different actions 1121 times. Merged at 7 different actions 20 times. Never widened. Performed 18260 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18260 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:15:59,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:59,662 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:59,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:59,662 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:15:59,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:59,674 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:59,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:16:14,910 WARN L179 SmtUtils]: Spent 14.69 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2018-11-12 19:16:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 146 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:16:15,469 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:16:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 146 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:16:16,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:16:16,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2018-11-12 19:16:16,167 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:16:16,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 19:16:16,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 19:16:16,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:16:16,169 INFO L87 Difference]: Start difference. First operand 14394 states and 17111 transitions. Second operand 13 states. [2018-11-12 19:16:18,965 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2018-11-12 19:16:25,724 WARN L179 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 72 [2018-11-12 19:16:37,616 WARN L179 SmtUtils]: Spent 11.66 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-11-12 19:16:49,723 WARN L179 SmtUtils]: Spent 11.74 s on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-11-12 19:16:58,101 WARN L179 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 59 Received shutdown request... [2018-11-12 19:17:00,251 WARN L187 SmtUtils]: Removed 6 from assertion stack [2018-11-12 19:17:00,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 19:17:00,252 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:17:00,256 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:17:00,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:17:00 BoogieIcfgContainer [2018-11-12 19:17:00,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:17:00,258 INFO L168 Benchmark]: Toolchain (without parser) took 223201.63 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -420.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:17:00,259 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-11-12 19:17:00,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1275.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:00,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 266.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -836.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:00,263 INFO L168 Benchmark]: Boogie Preprocessor took 181.02 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:17:00,264 INFO L168 Benchmark]: RCFGBuilder took 6386.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 297.4 MB). Peak memory consumption was 297.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:00,264 INFO L168 Benchmark]: TraceAbstraction took 215087.63 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 12.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 19:17:00,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1275.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 266.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -836.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.02 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6386.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 297.4 MB). Peak memory consumption was 297.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215087.63 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 12.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (14394states) and FLOYD_HOARE automaton (currently 34 states, 13 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 215.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 179.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1738 SDtfs, 21782 SDslu, 1965 SDs, 0 SdLazy, 24073 SolverSat, 2916 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 63.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1578 GetRequests, 1380 SyntacticMatches, 84 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 59.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14394occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.997747303575241 AbsIntWeakeningRatio, 0.088379705400982 AbsIntAvgWeakeningVarsNumRemoved, 6.693944353518821 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1787 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 2207 NumberOfCodeBlocks, 2207 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2629 ConstructedInterpolants, 17 QuantifiedInterpolants, 3810099 SizeOfPredicates, 9 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 774/1194 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown