java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:23:26,479 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:23:26,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:23:26,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:23:26,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:23:26,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:23:26,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:23:26,511 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:23:26,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:23:26,521 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:23:26,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:23:26,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:23:26,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:23:26,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:23:26,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:23:26,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:23:26,536 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:23:26,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:23:26,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:23:26,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:23:26,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:23:26,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:23:26,557 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:23:26,574 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:23:26,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:23:26,603 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:23:26,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:23:26,604 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:23:26,604 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:23:26,604 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:23:26,604 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:23:26,607 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:23:26,607 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:23:26,607 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:23:26,608 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:23:26,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:23:26,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:23:26,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:23:26,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:23:26,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:23:26,610 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:23:26,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:23:26,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:23:26,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:23:26,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:23:26,611 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:23:26,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:23:26,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:23:26,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:23:26,613 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:23:26,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:23:26,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:23:26,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:23:26,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:23:26,614 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:23:26,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:23:26,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:23:26,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:23:26,615 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:23:26,615 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:23:26,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:23:26,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:23:26,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:23:26,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:23:26,715 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:23:26,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-10-25 01:23:26,788 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/708344c76/2c1bdd5a6a2e49aaad38bed7aa4560b4/FLAGc96e8b539 [2018-10-25 01:23:27,365 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:23:27,371 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-10-25 01:23:27,386 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/708344c76/2c1bdd5a6a2e49aaad38bed7aa4560b4/FLAGc96e8b539 [2018-10-25 01:23:27,402 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/708344c76/2c1bdd5a6a2e49aaad38bed7aa4560b4 [2018-10-25 01:23:27,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:23:27,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:23:27,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:23:27,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:23:27,422 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:23:27,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:23:27" (1/1) ... [2018-10-25 01:23:27,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:27, skipping insertion in model container [2018-10-25 01:23:27,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:23:27" (1/1) ... [2018-10-25 01:23:27,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:23:27,516 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:23:27,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:23:27,959 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:23:28,117 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:23:28,139 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:23:28,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28 WrapperNode [2018-10-25 01:23:28,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:23:28,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:23:28,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:23:28,142 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:23:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:23:28,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:23:28,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:23:28,336 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:23:28,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (1/1) ... [2018-10-25 01:23:28,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:23:28,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:23:28,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:23:28,427 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:23:28,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (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 [2018-10-25 01:23:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:23:28,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:23:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:23:28,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:23:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:23:28,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:23:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:23:28,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:23:31,726 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:23:31,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:23:31 BoogieIcfgContainer [2018-10-25 01:23:31,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:23:31,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:23:31,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:23:31,734 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:23:31,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:23:27" (1/3) ... [2018-10-25 01:23:31,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d071a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:23:31, skipping insertion in model container [2018-10-25 01:23:31,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:28" (2/3) ... [2018-10-25 01:23:31,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d071a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:23:31, skipping insertion in model container [2018-10-25 01:23:31,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:23:31" (3/3) ... [2018-10-25 01:23:31,739 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label11_true-unreach-call.c [2018-10-25 01:23:31,749 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:23:31,757 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:23:31,776 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:23:31,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:23:31,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:23:31,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:23:31,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:23:31,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:23:31,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:23:31,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:23:31,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:23:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-25 01:23:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-25 01:23:31,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:31,856 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:23:31,858 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:31,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1604912700, now seen corresponding path program 1 times [2018-10-25 01:23:31,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:31,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:31,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:31,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:31,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:32,444 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:23:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:32,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:32,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:23:32,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:32,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:23:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:23:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:23:32,604 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-25 01:23:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:34,501 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-25 01:23:34,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:23:34,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-10-25 01:23:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:34,529 INFO L225 Difference]: With dead ends: 574 [2018-10-25 01:23:34,530 INFO L226 Difference]: Without dead ends: 356 [2018-10-25 01:23:34,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:23:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-25 01:23:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-25 01:23:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-25 01:23:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-25 01:23:34,664 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 68 [2018-10-25 01:23:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:34,666 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-25 01:23:34,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:23:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-25 01:23:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-25 01:23:34,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:34,685 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, 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] [2018-10-25 01:23:34,686 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:34,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:34,686 INFO L82 PathProgramCache]: Analyzing trace with hash 633419456, now seen corresponding path program 1 times [2018-10-25 01:23:34,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:34,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:34,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:34,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:34,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:35,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:35,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:23:35,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:35,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:23:35,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:23:35,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:23:35,228 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-25 01:23:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:39,062 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-25 01:23:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:23:39,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-10-25 01:23:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:39,080 INFO L225 Difference]: With dead ends: 1140 [2018-10-25 01:23:39,080 INFO L226 Difference]: Without dead ends: 790 [2018-10-25 01:23:39,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:23:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-25 01:23:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-25 01:23:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-25 01:23:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-25 01:23:39,144 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 188 [2018-10-25 01:23:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:39,145 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-25 01:23:39,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:23:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-25 01:23:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-25 01:23:39,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:39,153 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, 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] [2018-10-25 01:23:39,153 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:39,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1277434075, now seen corresponding path program 1 times [2018-10-25 01:23:39,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:39,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:39,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:39,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:39,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:39,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:39,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:23:39,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:39,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:23:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:23:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:23:39,527 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-25 01:23:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:44,533 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-25 01:23:44,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:23:44,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-25 01:23:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:44,542 INFO L225 Difference]: With dead ends: 1975 [2018-10-25 01:23:44,542 INFO L226 Difference]: Without dead ends: 1197 [2018-10-25 01:23:44,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:23:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-25 01:23:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-25 01:23:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-25 01:23:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-25 01:23:44,588 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 195 [2018-10-25 01:23:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:44,589 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-25 01:23:44,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:23:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-25 01:23:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-25 01:23:44,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:44,597 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, 3, 3, 3, 3, 3, 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] [2018-10-25 01:23:44,597 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:44,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598705, now seen corresponding path program 1 times [2018-10-25 01:23:44,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:44,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:44,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:44,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:44,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:45,110 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:23:45,285 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:23:45,706 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 01:23:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:46,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:23:46,069 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:23:46,070 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-10-25 01:23:46,072 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], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-25 01:23:46,124 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:23:46,124 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:23:48,353 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:23:48,355 INFO L272 AbstractInterpreter]: Visited 129 different actions 507 times. Merged at 7 different actions 27 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-25 01:23:48,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:48,389 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:23:48,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:23:48,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:23:48,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:48,409 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:23:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:48,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:23:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:49,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:23:49,574 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:23:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:49,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:23:49,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-10-25 01:23:49,952 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:23:49,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:23:49,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:23:49,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-10-25 01:23:49,954 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states. [2018-10-25 01:23:50,216 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-10-25 01:23:52,675 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-25 01:24:00,244 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-25 01:24:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:24:00,689 INFO L93 Difference]: Finished difference Result 3810 states and 6145 transitions. [2018-10-25 01:24:00,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-25 01:24:00,689 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 259 [2018-10-25 01:24:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:24:00,711 INFO L225 Difference]: With dead ends: 3810 [2018-10-25 01:24:00,711 INFO L226 Difference]: Without dead ends: 2639 [2018-10-25 01:24:00,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2018-10-25 01:24:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2018-10-25 01:24:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2321. [2018-10-25 01:24:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2018-10-25 01:24:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3108 transitions. [2018-10-25 01:24:00,844 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3108 transitions. Word has length 259 [2018-10-25 01:24:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:24:00,845 INFO L481 AbstractCegarLoop]: Abstraction has 2321 states and 3108 transitions. [2018-10-25 01:24:00,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:24:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3108 transitions. [2018-10-25 01:24:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-25 01:24:00,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:24:00,856 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, 3, 3, 3, 3, 3, 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] [2018-10-25 01:24:00,857 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:24:00,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:24:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1468713688, now seen corresponding path program 1 times [2018-10-25 01:24:00,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:24:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:24:00,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:24:00,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:24:00,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:24:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:24:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:24:01,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:24:01,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:24:01,336 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-25 01:24:01,337 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], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [718], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-25 01:24:01,343 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:24:01,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:24:01,613 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-10-25 01:24:01,619 INFO L168 Benchmark]: Toolchain (without parser) took 34204.05 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -569.4 MB). Peak memory consumption was 537.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:01,620 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. [2018-10-25 01:24:01,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.47 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:01,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:01,623 INFO L168 Benchmark]: Boogie Preprocessor took 90.06 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. [2018-10-25 01:24:01,624 INFO L168 Benchmark]: RCFGBuilder took 3301.28 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: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:01,624 INFO L168 Benchmark]: TraceAbstraction took 29888.06 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 371.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.4 MB). Peak memory consumption was 451.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:01,632 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 723.47 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.06 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 3301.28 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: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29888.06 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 371.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.4 MB). Peak memory consumption was 451.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...