java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:40:02,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:40:02,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:40:02,631 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:40:02,632 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:40:02,633 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:40:02,634 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:40:02,636 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:40:02,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:40:02,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:40:02,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:40:02,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:40:02,641 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:40:02,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:40:02,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:40:02,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:40:02,645 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:40:02,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:40:02,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:40:02,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:40:02,653 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:40:02,654 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:40:02,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:40:02,664 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:40:02,664 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:40:02,665 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:40:02,666 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:40:02,666 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:40:02,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:40:02,696 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:40:02,698 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:40:02,698 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:40:02,698 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:40:02,699 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:40:02,699 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:40:02,699 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:40:02,699 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:40:02,699 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:40:02,700 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:40:02,700 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:40:02,701 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:40:02,701 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:40:02,701 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:40:02,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:40:02,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:40:02,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:40:02,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:40:02,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:40:02,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:40:02,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:40:02,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:40:02,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:40:02,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:40:02,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:40:02,706 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:40:02,706 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:40:02,707 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:40:02,707 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:40:02,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:40:02,707 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:40:02,707 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:40:02,708 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:40:02,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:40:02,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:40:02,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:40:02,807 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:40:02,808 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:40:02,809 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-10-24 18:40:02,879 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30a4e7ac0/05e2855da95b429eab2def2efa8989ef/FLAGd67048c00 [2018-10-24 18:40:03,581 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:40:03,582 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label37_false-unreach-call.c [2018-10-24 18:40:03,604 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30a4e7ac0/05e2855da95b429eab2def2efa8989ef/FLAGd67048c00 [2018-10-24 18:40:03,623 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30a4e7ac0/05e2855da95b429eab2def2efa8989ef [2018-10-24 18:40:03,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:40:03,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:40:03,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:40:03,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:40:03,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:40:03,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:40:03" (1/1) ... [2018-10-24 18:40:03,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:03, skipping insertion in model container [2018-10-24 18:40:03,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:40:03" (1/1) ... [2018-10-24 18:40:03,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:40:03,763 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:40:04,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:40:04,618 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:40:04,947 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:40:04,970 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:40:04,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04 WrapperNode [2018-10-24 18:40:04,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:40:04,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:40:04,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:40:04,973 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:40:04,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:40:05,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:40:05,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:40:05,378 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:40:05,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... [2018-10-24 18:40:05,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:40:05,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:40:05,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:40:05,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:40:05,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:40:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:40:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:40:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:40:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:40:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:40:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:40:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:40:05,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:40:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:40:05,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:40:12,594 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:40:12,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:40:12 BoogieIcfgContainer [2018-10-24 18:40:12,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:40:12,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:40:12,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:40:12,601 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:40:12,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:40:03" (1/3) ... [2018-10-24 18:40:12,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a268785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:40:12, skipping insertion in model container [2018-10-24 18:40:12,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:04" (2/3) ... [2018-10-24 18:40:12,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a268785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:40:12, skipping insertion in model container [2018-10-24 18:40:12,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:40:12" (3/3) ... [2018-10-24 18:40:12,605 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label37_false-unreach-call.c [2018-10-24 18:40:12,615 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:40:12,623 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:40:12,642 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:40:12,684 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:40:12,684 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:40:12,685 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:40:12,685 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:40:12,685 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:40:12,685 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:40:12,685 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:40:12,686 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:40:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:40:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 18:40:12,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:12,728 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] [2018-10-24 18:40:12,730 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:12,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:12,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1604486473, now seen corresponding path program 1 times [2018-10-24 18:40:12,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:12,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:12,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:12,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:12,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:13,177 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:40:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:40:13,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:40:13,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:40:13,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:13,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:40:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:40:13,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:40:13,228 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 18:40:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:40:20,186 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-10-24 18:40:20,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:40:20,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-10-24 18:40:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:40:20,221 INFO L225 Difference]: With dead ends: 1193 [2018-10-24 18:40:20,221 INFO L226 Difference]: Without dead ends: 753 [2018-10-24 18:40:20,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:40:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-10-24 18:40:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-10-24 18:40:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-10-24 18:40:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-10-24 18:40:20,325 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 27 [2018-10-24 18:40:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:40:20,325 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-10-24 18:40:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:40:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-10-24 18:40:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 18:40:20,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:20,332 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:40:20,333 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:20,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash 539845592, now seen corresponding path program 1 times [2018-10-24 18:40:20,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:20,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:20,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:20,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:20,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:40:20,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:40:20,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:40:20,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:20,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:40:20,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:40:20,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:40:20,549 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-10-24 18:40:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:40:39,337 INFO L93 Difference]: Finished difference Result 2821 states and 5078 transitions. [2018-10-24 18:40:39,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:40:39,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-10-24 18:40:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:40:39,358 INFO L225 Difference]: With dead ends: 2821 [2018-10-24 18:40:39,358 INFO L226 Difference]: Without dead ends: 2074 [2018-10-24 18:40:39,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:40:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2018-10-24 18:40:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2049. [2018-10-24 18:40:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2018-10-24 18:40:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3213 transitions. [2018-10-24 18:40:39,459 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3213 transitions. Word has length 107 [2018-10-24 18:40:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:40:39,459 INFO L481 AbstractCegarLoop]: Abstraction has 2049 states and 3213 transitions. [2018-10-24 18:40:39,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:40:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3213 transitions. [2018-10-24 18:40:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:40:39,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:39,475 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:40:39,476 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:39,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:39,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1140571872, now seen corresponding path program 1 times [2018-10-24 18:40:39,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:39,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:39,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:39,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:39,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:40:39,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:40:39,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:40:39,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:39,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:40:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:40:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:40:39,766 INFO L87 Difference]: Start difference. First operand 2049 states and 3213 transitions. Second operand 6 states. [2018-10-24 18:40:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:40:50,597 INFO L93 Difference]: Finished difference Result 6267 states and 10271 transitions. [2018-10-24 18:40:50,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:40:50,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 18:40:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:40:50,625 INFO L225 Difference]: With dead ends: 6267 [2018-10-24 18:40:50,625 INFO L226 Difference]: Without dead ends: 4224 [2018-10-24 18:40:50,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:40:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4224 states. [2018-10-24 18:40:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4224 to 4166. [2018-10-24 18:40:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2018-10-24 18:40:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 6102 transitions. [2018-10-24 18:40:50,773 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 6102 transitions. Word has length 111 [2018-10-24 18:40:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:40:50,774 INFO L481 AbstractCegarLoop]: Abstraction has 4166 states and 6102 transitions. [2018-10-24 18:40:50,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:40:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 6102 transitions. [2018-10-24 18:40:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 18:40:50,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:50,781 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:40:50,781 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:50,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash -142723084, now seen corresponding path program 1 times [2018-10-24 18:40:50,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:50,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:50,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:50,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:50,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 41 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:40:51,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:40:51,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:40:51,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 18:40:51,510 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:40:51,576 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:40:51,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:40:53,170 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:40:53,760 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:40:53,762 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:40:53,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:53,774 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:40:55,561 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 77.62% of their original sizes. [2018-10-24 18:40:55,561 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:40:56,025 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 18:40:56,026 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:40:56,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:40:56,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:40:56,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:56,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:40:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:40:56,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:40:56,029 INFO L87 Difference]: Start difference. First operand 4166 states and 6102 transitions. Second operand 7 states. [2018-10-24 18:42:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:02,472 INFO L93 Difference]: Finished difference Result 8636 states and 12553 transitions. [2018-10-24 18:42:02,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:42:02,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-10-24 18:42:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:02,491 INFO L225 Difference]: With dead ends: 8636 [2018-10-24 18:42:02,491 INFO L226 Difference]: Without dead ends: 4476 [2018-10-24 18:42:02,502 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:42:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2018-10-24 18:42:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4474. [2018-10-24 18:42:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4474 states. [2018-10-24 18:42:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6419 transitions. [2018-10-24 18:42:02,602 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6419 transitions. Word has length 181 [2018-10-24 18:42:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:02,603 INFO L481 AbstractCegarLoop]: Abstraction has 4474 states and 6419 transitions. [2018-10-24 18:42:02,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:42:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6419 transitions. [2018-10-24 18:42:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 18:42:02,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:02,607 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:42:02,607 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:02,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1466713142, now seen corresponding path program 1 times [2018-10-24 18:42:02,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:02,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:02,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:02,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:02,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 41 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:42:03,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:42:03,286 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:42:03,286 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-10-24 18:42:03,287 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:42:03,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:42:03,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:42:05,033 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:42:13,474 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:42:13,475 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:42:13,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:13,508 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:42:15,796 INFO L232 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 78.93% of their original sizes. [2018-10-24 18:42:15,796 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:43:45,793 INFO L413 sIntCurrentIteration]: We have 206 unified AI predicates [2018-10-24 18:43:45,793 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:43:45,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:43:45,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 18:43:45,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:45,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 18:43:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 18:43:45,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:43:45,795 INFO L87 Difference]: Start difference. First operand 4474 states and 6419 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 18:44:07,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:44:07,822 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:44:07,828 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:44:07,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:44:07 BoogieIcfgContainer [2018-10-24 18:44:07,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:44:07,830 INFO L168 Benchmark]: Toolchain (without parser) took 244191.84 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -854.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,831 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:44:07,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1330.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 405.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,834 INFO L168 Benchmark]: Boogie Preprocessor took 237.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,834 INFO L168 Benchmark]: RCFGBuilder took 6981.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.4 MB). Peak memory consumption was 303.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,835 INFO L168 Benchmark]: TraceAbstraction took 235231.64 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -422.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:44:07,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 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 1330.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 405.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6981.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.4 MB). Peak memory consumption was 303.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235231.64 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -422.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (4474states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (69 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 125.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1000 SDtfs, 5228 SDslu, 832 SDs, 0 SdLazy, 8145 SolverSat, 1748 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 80.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 417 GetRequests, 286 SyntacticMatches, 88 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 91.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4474occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9943305549297888 AbsIntWeakeningRatio, 0.13471502590673576 AbsIntAvgWeakeningVarsNumRemoved, 449.8834196891192 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 85 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 506068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 134/274 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown