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/Problem11_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:55:23,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:55:23,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:55:23,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:55:23,608 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:55:23,609 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:55:23,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:55:23,612 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:55:23,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:55:23,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:55:23,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:55:23,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:55:23,617 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:55:23,618 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:55:23,619 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:55:23,620 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:55:23,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:55:23,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:55:23,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:55:23,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:55:23,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:55:23,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:55:23,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:55:23,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:55:23,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:55:23,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:55:23,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:55:23,639 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 02:55:23,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:55:23,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:55:23,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:55:23,668 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:55:23,668 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:55:23,669 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:55:23,669 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:55:23,669 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:55:23,669 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:55:23,670 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:55:23,670 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:55:23,670 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:55:23,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:55:23,671 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:55:23,671 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:55:23,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:55:23,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:55:23,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:55:23,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:55:23,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:55:23,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:55:23,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:55:23,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:55:23,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:55:23,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:55:23,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:55:23,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:55:23,674 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:55:23,674 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:55:23,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:55:23,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:55:23,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:55:23,675 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:55:23,675 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:55:23,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:55:23,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:55:23,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:55:23,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:55:23,739 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:55:23,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-11-07 02:55:23,808 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cc0fca6/96b70b0d013f4c19ab2a43b881c20bc1/FLAG96c17822b [2018-11-07 02:55:24,447 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:55:24,448 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-11-07 02:55:24,474 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cc0fca6/96b70b0d013f4c19ab2a43b881c20bc1/FLAG96c17822b [2018-11-07 02:55:24,489 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cc0fca6/96b70b0d013f4c19ab2a43b881c20bc1 [2018-11-07 02:55:24,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:55:24,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:55:24,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:24,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:55:24,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:55:24,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:24" (1/1) ... [2018-11-07 02:55:24,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2964f187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:24, skipping insertion in model container [2018-11-07 02:55:24,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:24" (1/1) ... [2018-11-07 02:55:24,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:55:24,606 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:55:25,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:25,229 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:55:25,397 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:25,416 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:55:25,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25 WrapperNode [2018-11-07 02:55:25,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:25,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:25,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:55:25,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:55:25,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:25,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:55:25,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:55:25,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:55:25,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (1/1) ... [2018-11-07 02:55:25,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:55:25,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:55:25,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:55:25,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:55:25,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (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 02:55:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:55:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:55:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:55:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:55:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:55:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:55:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:55:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:55:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:55:30,175 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:55:30,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:30 BoogieIcfgContainer [2018-11-07 02:55:30,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:55:30,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:55:30,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:55:30,182 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:55:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:55:24" (1/3) ... [2018-11-07 02:55:30,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc42d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:30, skipping insertion in model container [2018-11-07 02:55:30,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:25" (2/3) ... [2018-11-07 02:55:30,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc42d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:30, skipping insertion in model container [2018-11-07 02:55:30,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:30" (3/3) ... [2018-11-07 02:55:30,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19_true-unreach-call.c [2018-11-07 02:55:30,195 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:55:30,208 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:55:30,226 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:55:30,270 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:55:30,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:55:30,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:55:30,271 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:55:30,271 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:55:30,271 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:55:30,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:55:30,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:55:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:55:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 02:55:30,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:30,314 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:55:30,316 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:30,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1747963281, now seen corresponding path program 1 times [2018-11-07 02:55:30,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:30,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:30,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:30,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:30,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:30,853 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 02:55:30,878 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 02:55:30,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:30,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:55:30,881 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:30,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:55:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:55:30,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:30,907 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 02:55:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:34,533 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-07 02:55:34,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:55:34,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-11-07 02:55:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:34,559 INFO L225 Difference]: With dead ends: 982 [2018-11-07 02:55:34,560 INFO L226 Difference]: Without dead ends: 683 [2018-11-07 02:55:34,568 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-07 02:55:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-07 02:55:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-07 02:55:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-07 02:55:34,674 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 63 [2018-11-07 02:55:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:34,675 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-07 02:55:34,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:55:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-07 02:55:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 02:55:34,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:34,685 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:55:34,685 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:34,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:34,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1450662836, now seen corresponding path program 1 times [2018-11-07 02:55:34,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:34,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:34,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:34,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:34,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:35,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:35,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 02:55:35,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:35,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 02:55:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 02:55:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:55:35,168 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-11-07 02:55:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:40,294 INFO L93 Difference]: Finished difference Result 1975 states and 2980 transitions. [2018-11-07 02:55:40,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 02:55:40,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2018-11-07 02:55:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:40,310 INFO L225 Difference]: With dead ends: 1975 [2018-11-07 02:55:40,310 INFO L226 Difference]: Without dead ends: 1298 [2018-11-07 02:55:40,315 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 02:55:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2018-11-07 02:55:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1247. [2018-11-07 02:55:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2018-11-07 02:55:40,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1784 transitions. [2018-11-07 02:55:40,416 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1784 transitions. Word has length 137 [2018-11-07 02:55:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:40,417 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 1784 transitions. [2018-11-07 02:55:40,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 02:55:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1784 transitions. [2018-11-07 02:55:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 02:55:40,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:40,433 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:55:40,433 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:40,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:40,434 INFO L82 PathProgramCache]: Analyzing trace with hash 507062389, now seen corresponding path program 1 times [2018-11-07 02:55:40,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:40,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:40,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:40,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:40,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:40,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:40,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:55:40,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:40,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:55:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:55:40,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:40,793 INFO L87 Difference]: Start difference. First operand 1247 states and 1784 transitions. Second operand 4 states. [2018-11-07 02:55:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:45,323 INFO L93 Difference]: Finished difference Result 4504 states and 6772 transitions. [2018-11-07 02:55:45,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:55:45,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-11-07 02:55:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:45,345 INFO L225 Difference]: With dead ends: 4504 [2018-11-07 02:55:45,345 INFO L226 Difference]: Without dead ends: 3263 [2018-11-07 02:55:45,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2018-11-07 02:55:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3234. [2018-11-07 02:55:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2018-11-07 02:55:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4524 transitions. [2018-11-07 02:55:45,471 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4524 transitions. Word has length 195 [2018-11-07 02:55:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:45,472 INFO L480 AbstractCegarLoop]: Abstraction has 3234 states and 4524 transitions. [2018-11-07 02:55:45,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:55:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4524 transitions. [2018-11-07 02:55:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 02:55:45,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:45,480 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 02:55:45,481 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:45,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1163566050, now seen corresponding path program 1 times [2018-11-07 02:55:45,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:45,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:45,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:45,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:45,483 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:55:45,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:55:45,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:55:45,814 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 02:55:45,816 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:55:45,889 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:55:45,890 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:55:47,790 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:55:48,678 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:55:48,680 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 02:55:48,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:48,718 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:55:51,430 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 73.92% of their original sizes. [2018-11-07 02:55:51,431 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:55:51,891 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 02:55:51,891 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:55:51,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:55:51,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 02:55:51,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:51,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 02:55:51,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 02:55:51,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:55:51,894 INFO L87 Difference]: Start difference. First operand 3234 states and 4524 transitions. Second operand 7 states. [2018-11-07 02:56:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:56:43,571 INFO L93 Difference]: Finished difference Result 6654 states and 9257 transitions. [2018-11-07 02:56:43,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:56:43,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2018-11-07 02:56:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:56:43,593 INFO L225 Difference]: With dead ends: 6654 [2018-11-07 02:56:43,594 INFO L226 Difference]: Without dead ends: 3426 [2018-11-07 02:56:43,606 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:56:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2018-11-07 02:56:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3424. [2018-11-07 02:56:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3424 states. [2018-11-07 02:56:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4725 transitions. [2018-11-07 02:56:43,704 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4725 transitions. Word has length 210 [2018-11-07 02:56:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:56:43,706 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 4725 transitions. [2018-11-07 02:56:43,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 02:56:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4725 transitions. [2018-11-07 02:56:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-07 02:56:43,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:56:43,714 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 02:56:43,714 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:56:43,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2105312380, now seen corresponding path program 1 times [2018-11-07 02:56:43,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:56:43,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:43,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:56:43,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:43,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:56:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:56:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:56:44,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:56:44,312 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:56:44,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-11-07 02:56:44,313 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:56:44,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:56:44,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:56:46,060 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:57:00,525 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:57:00,526 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 02:57:00,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:00,555 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:57:03,664 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 73.77% of their original sizes. [2018-11-07 02:57:03,664 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:57:08,544 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-11-07 02:57:08,544 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:57:08,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:57:08,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2018-11-07 02:57:08,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:57:08,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 02:57:08,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 02:57:08,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-11-07 02:57:08,546 INFO L87 Difference]: Start difference. First operand 3424 states and 4725 transitions. Second operand 16 states. [2018-11-07 02:58:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:58:33,002 INFO L93 Difference]: Finished difference Result 6847 states and 9481 transitions. [2018-11-07 02:58:33,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 02:58:33,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 254 [2018-11-07 02:58:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:58:33,020 INFO L225 Difference]: With dead ends: 6847 [2018-11-07 02:58:33,021 INFO L226 Difference]: Without dead ends: 3619 [2018-11-07 02:58:33,033 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-11-07 02:58:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2018-11-07 02:58:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 3615. [2018-11-07 02:58:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2018-11-07 02:58:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4937 transitions. [2018-11-07 02:58:33,127 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4937 transitions. Word has length 254 [2018-11-07 02:58:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:58:33,128 INFO L480 AbstractCegarLoop]: Abstraction has 3615 states and 4937 transitions. [2018-11-07 02:58:33,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 02:58:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4937 transitions. [2018-11-07 02:58:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-07 02:58:33,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:58:33,135 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 02:58:33,136 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:58:33,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:58:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash -558367176, now seen corresponding path program 1 times [2018-11-07 02:58:33,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:58:33,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:58:33,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:58:33,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:58:33,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:58:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:58:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:58:33,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:58:33,555 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:58:33,556 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-07 02:58:33,556 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:58:33,562 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:58:33,562 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:58:34,583 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:58:47,733 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:58:47,733 INFO L272 AbstractInterpreter]: Visited 135 different actions 393 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 02:58:47,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:58:47,741 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:58:49,728 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 74.6% of their original sizes. [2018-11-07 02:58:49,729 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:59:00,109 INFO L415 sIntCurrentIteration]: We unified 263 AI predicates to 263 [2018-11-07 02:59:00,110 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:59:00,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:59:00,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [10] total 27 [2018-11-07 02:59:00,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:59:00,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 02:59:00,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 02:59:00,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-11-07 02:59:00,111 INFO L87 Difference]: Start difference. First operand 3615 states and 4937 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 02:59:16,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 02:59:16,238 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:59:16,244 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:59:16,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:59:16 BoogieIcfgContainer [2018-11-07 02:59:16,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:59:16,245 INFO L168 Benchmark]: Toolchain (without parser) took 231745.80 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 146.4 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:16,246 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:59:16,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:16,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:16,249 INFO L168 Benchmark]: Boogie Preprocessor took 143.26 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:59:16,249 INFO L168 Benchmark]: RCFGBuilder took 4456.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 169.6 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:16,250 INFO L168 Benchmark]: TraceAbstraction took 226067.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 767.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:16,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 916.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.26 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4456.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 169.6 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226067.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 767.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (3615states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (50 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 165.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1241 SDtfs, 3643 SDslu, 1491 SDs, 0 SdLazy, 8330 SolverSat, 1012 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 765 GetRequests, 695 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3615occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9957288815909502 AbsIntWeakeningRatio, 0.11586206896551725 AbsIntAvgWeakeningVarsNumRemoved, 806.3268965517242 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 86 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1123 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1117 ConstructedInterpolants, 0 QuantifiedInterpolants, 1283689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 461/669 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown