java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:44:43,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:44:43,498 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:44:43,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:44:43,512 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:44:43,513 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:44:43,514 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:44:43,516 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:44:43,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:44:43,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:44:43,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:44:43,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:44:43,521 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:44:43,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:44:43,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:44:43,524 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:44:43,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:44:43,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:44:43,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:44:43,531 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:44:43,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:44:43,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:44:43,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:44:43,549 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:44:43,549 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:44:43,550 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:44:43,554 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:44:43,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:44:43,584 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:44:43,587 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:44:43,588 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:44:43,588 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:44:43,589 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:44:43,589 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:44:43,589 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:44:43,589 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:44:43,589 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:44:43,590 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:44:43,590 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:44:43,590 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:44:43,591 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:44:43,591 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:44:43,591 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:44:43,591 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:44:43,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:44:43,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:44:43,592 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:44:43,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:44:43,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:44:43,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:44:43,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:44:43,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:44:43,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:44:43,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:44:43,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:44:43,594 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:44:43,595 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:44:43,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:44:43,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:44:43,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:44:43,659 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:44:43,660 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:44:43,660 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-11-07 00:44:43,714 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436fecc7e/b7a0f77fcb1d4a2db7d2ffb85711d1c5/FLAG56b686999 [2018-11-07 00:44:44,510 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:44:44,511 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-11-07 00:44:44,544 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436fecc7e/b7a0f77fcb1d4a2db7d2ffb85711d1c5/FLAG56b686999 [2018-11-07 00:44:44,561 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436fecc7e/b7a0f77fcb1d4a2db7d2ffb85711d1c5 [2018-11-07 00:44:44,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:44:44,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:44:44,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:44:44,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:44:44,584 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:44:44,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:44" (1/1) ... [2018-11-07 00:44:44,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:44, skipping insertion in model container [2018-11-07 00:44:44,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:44" (1/1) ... [2018-11-07 00:44:44,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:44:44,749 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:44:45,829 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:44:45,834 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:44:46,330 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:44:46,358 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:44:46,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46 WrapperNode [2018-11-07 00:44:46,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:44:46,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:44:46,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:44:46,361 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:44:46,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:44:46,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:44:46,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:44:46,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:44:46,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... [2018-11-07 00:44:46,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:44:46,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:44:46,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:44:46,908 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:44:46,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:44:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:44:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:44:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:44:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:44:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:44:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:44:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:44:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:44:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:44:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:44:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:44:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:44:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:44:54,723 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:44:54,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54 BoogieIcfgContainer [2018-11-07 00:44:54,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:44:54,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:44:54,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:44:54,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:44:54,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:44" (1/3) ... [2018-11-07 00:44:54,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6c76f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2018-11-07 00:44:54,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:46" (2/3) ... [2018-11-07 00:44:54,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6c76f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2018-11-07 00:44:54,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54" (3/3) ... [2018-11-07 00:44:54,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label01_false-unreach-call.c [2018-11-07 00:44:54,742 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:44:54,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:44:54,770 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:44:54,816 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:44:54,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:44:54,816 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:44:54,817 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:44:54,817 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:44:54,817 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:44:54,817 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:44:54,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:44:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 00:44:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-07 00:44:54,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:54,871 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] [2018-11-07 00:44:54,874 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:54,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:54,880 INFO L82 PathProgramCache]: Analyzing trace with hash -585368433, now seen corresponding path program 1 times [2018-11-07 00:44:54,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:54,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:54,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:54,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:54,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:55,348 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:44:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:55,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:44:55,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:44:55,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:44:55,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:44:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:44:55,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:44:55,481 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 00:45:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:02,960 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 00:45:02,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:45:02,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-11-07 00:45:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:02,996 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 00:45:02,997 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 00:45:03,010 INFO L604 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 [2018-11-07 00:45:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 00:45:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 00:45:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 00:45:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 00:45:03,162 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 33 [2018-11-07 00:45:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:03,163 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 00:45:03,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:45:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 00:45:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-07 00:45:03,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:03,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:45:03,175 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:03,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:03,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1568281720, now seen corresponding path program 1 times [2018-11-07 00:45:03,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:03,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:03,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:03,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:03,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:03,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:03,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:45:03,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:03,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:45:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:45:03,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:45:03,580 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 00:45:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:15,394 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 00:45:15,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:45:15,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2018-11-07 00:45:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:15,429 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 00:45:15,429 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 00:45:15,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:45:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 00:45:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 00:45:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 00:45:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 00:45:15,589 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 107 [2018-11-07 00:45:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:15,591 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 00:45:15,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:45:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 00:45:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 00:45:15,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:15,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:45:15,602 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:15,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:15,602 INFO L82 PathProgramCache]: Analyzing trace with hash -599106287, now seen corresponding path program 1 times [2018-11-07 00:45:15,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:15,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:15,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:15,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:15,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:15,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:15,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:45:15,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:15,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:45:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:45:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:45:15,760 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-11-07 00:45:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:25,904 INFO L93 Difference]: Finished difference Result 14335 states and 23466 transitions. [2018-11-07 00:45:25,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:45:25,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-11-07 00:45:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:26,033 INFO L225 Difference]: With dead ends: 14335 [2018-11-07 00:45:26,034 INFO L226 Difference]: Without dead ends: 10046 [2018-11-07 00:45:26,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:45:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2018-11-07 00:45:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 9940. [2018-11-07 00:45:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9940 states. [2018-11-07 00:45:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 14576 transitions. [2018-11-07 00:45:26,292 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 14576 transitions. Word has length 110 [2018-11-07 00:45:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:26,293 INFO L480 AbstractCegarLoop]: Abstraction has 9940 states and 14576 transitions. [2018-11-07 00:45:26,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:45:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 14576 transitions. [2018-11-07 00:45:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 00:45:26,298 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:26,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:45:26,298 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:26,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2057431661, now seen corresponding path program 1 times [2018-11-07 00:45:26,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:26,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:26,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:26,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:26,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:26,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:26,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:45:26,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:26,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:45:26,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:45:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:45:26,522 INFO L87 Difference]: Start difference. First operand 9940 states and 14576 transitions. Second operand 4 states. [2018-11-07 00:45:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:34,437 INFO L93 Difference]: Finished difference Result 29909 states and 46759 transitions. [2018-11-07 00:45:34,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:45:34,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-07 00:45:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:34,556 INFO L225 Difference]: With dead ends: 29909 [2018-11-07 00:45:34,556 INFO L226 Difference]: Without dead ends: 19975 [2018-11-07 00:45:34,606 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 [2018-11-07 00:45:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2018-11-07 00:45:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 19972. [2018-11-07 00:45:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19972 states. [2018-11-07 00:45:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19972 states to 19972 states and 29040 transitions. [2018-11-07 00:45:35,216 INFO L78 Accepts]: Start accepts. Automaton has 19972 states and 29040 transitions. Word has length 140 [2018-11-07 00:45:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:35,217 INFO L480 AbstractCegarLoop]: Abstraction has 19972 states and 29040 transitions. [2018-11-07 00:45:35,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:45:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 19972 states and 29040 transitions. [2018-11-07 00:45:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 00:45:35,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:35,223 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:45:35,223 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:35,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:35,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1604325120, now seen corresponding path program 1 times [2018-11-07 00:45:35,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:35,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:35,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:35,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:35,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:45:35,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:45:35,466 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:45:35,467 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-11-07 00:45:35,468 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1787], [1789], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:45:35,558 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:45:35,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:45:37,175 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:45:37,177 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:45:37,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:37,214 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:45:38,796 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 00:45:38,796 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:45:39,209 INFO L415 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2018-11-07 00:45:39,209 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:45:39,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:45:39,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 00:45:39,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:39,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:45:39,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:45:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:45:39,212 INFO L87 Difference]: Start difference. First operand 19972 states and 29040 transitions. Second operand 7 states. [2018-11-07 00:45:43,409 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:47:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:47:26,999 INFO L93 Difference]: Finished difference Result 40643 states and 58995 transitions. [2018-11-07 00:47:26,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:47:26,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2018-11-07 00:47:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:47:27,076 INFO L225 Difference]: With dead ends: 40643 [2018-11-07 00:47:27,076 INFO L226 Difference]: Without dead ends: 20677 [2018-11-07 00:47:27,123 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:47:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20677 states. [2018-11-07 00:47:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20677 to 20675. [2018-11-07 00:47:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20675 states. [2018-11-07 00:47:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20675 states to 20675 states and 29752 transitions. [2018-11-07 00:47:27,583 INFO L78 Accepts]: Start accepts. Automaton has 20675 states and 29752 transitions. Word has length 180 [2018-11-07 00:47:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:47:27,585 INFO L480 AbstractCegarLoop]: Abstraction has 20675 states and 29752 transitions. [2018-11-07 00:47:27,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:47:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 20675 states and 29752 transitions. [2018-11-07 00:47:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-07 00:47:27,594 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:47:27,595 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:47:27,595 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:47:27,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:47:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1253475010, now seen corresponding path program 1 times [2018-11-07 00:47:27,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:47:27,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:27,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:47:27,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:27,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:47:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:47:28,232 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:28,443 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:28,679 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:29,130 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 00:47:29,573 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-07 00:47:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 137 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:47:29,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:47:29,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:47:29,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-11-07 00:47:29,927 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1787], [1789], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:47:29,939 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:47:29,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:47:41,774 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:47:41,774 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:47:41,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:47:41,782 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:47:46,539 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 77.86% of their original sizes. [2018-11-07 00:47:46,540 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:48:22,211 INFO L415 sIntCurrentIteration]: We unified 366 AI predicates to 366 [2018-11-07 00:48:22,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:48:22,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:48:22,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-11-07 00:48:22,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:48:22,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 00:48:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 00:48:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:48:22,213 INFO L87 Difference]: Start difference. First operand 20675 states and 29752 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 00:48:24,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:48:24,138 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:48:24,143 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:48:24,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:48:24 BoogieIcfgContainer [2018-11-07 00:48:24,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:48:24,144 INFO L168 Benchmark]: Toolchain (without parser) took 219569.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -125.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,146 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-07 00:48:24,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1780.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -927.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,151 INFO L168 Benchmark]: Boogie Preprocessor took 226.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,152 INFO L168 Benchmark]: RCFGBuilder took 7816.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.6 MB). Peak memory consumption was 512.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,156 INFO L168 Benchmark]: TraceAbstraction took 209418.45 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 127.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:48:24,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1780.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -927.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 226.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7816.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.6 MB). Peak memory consumption was 512.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209418.45 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 127.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (20675states) and FLOYD_HOARE automaton (currently 6 states, 15 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 147.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2614 SDtfs, 9643 SDslu, 890 SDs, 0 SdLazy, 22364 SolverSat, 5357 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 578 GetRequests, 485 SyntacticMatches, 55 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 35.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20675occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955158888445685 AbsIntWeakeningRatio, 0.10642201834862386 AbsIntAvgWeakeningVarsNumRemoved, 307.8146788990826 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 137 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 931 ConstructedInterpolants, 0 QuantifiedInterpolants, 1247619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 277/495 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown