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/Problem14_label08_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:37:09,443 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:37:09,446 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:37:09,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:37:09,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:37:09,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:37:09,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:37:09,468 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:37:09,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:37:09,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:37:09,473 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:37:09,474 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:37:09,477 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:37:09,478 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:37:09,479 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:37:09,480 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:37:09,481 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:37:09,483 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:37:09,485 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:37:09,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:37:09,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:37:09,489 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:37:09,491 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:37:09,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:37:09,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:37:09,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:37:09,494 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:37:09,495 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:37:09,496 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:37:09,497 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:37:09,497 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:37:09,498 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:37:09,500 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 [2018-10-24 23:37:09,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:37:09,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:37:09,519 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:37:09,519 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:37:09,519 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:37:09,519 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:37:09,520 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:37:09,520 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:37:09,520 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:37:09,520 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:37:09,520 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:37:09,521 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:37:09,521 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:37:09,521 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:37:09,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:37:09,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:37:09,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:37:09,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:37:09,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:37:09,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:37:09,523 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:37:09,523 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:37:09,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:37:09,523 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:37:09,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:37:09,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:37:09,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:37:09,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:37:09,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:37:09,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:37:09,525 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:37:09,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:37:09,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:37:09,525 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:37:09,526 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:37:09,526 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:37:09,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:37:09,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:37:09,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:37:09,590 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:37:09,590 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:37:09,591 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 23:37:09,652 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf26cb484/5743ce9d22b34a18990753dad03cb08d/FLAG4871d8e95 [2018-10-24 23:37:10,235 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:37:10,236 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 23:37:10,256 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf26cb484/5743ce9d22b34a18990753dad03cb08d/FLAG4871d8e95 [2018-10-24 23:37:10,274 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bf26cb484/5743ce9d22b34a18990753dad03cb08d [2018-10-24 23:37:10,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:37:10,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:37:10,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:37:10,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:37:10,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:37:10,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:10" (1/1) ... [2018-10-24 23:37:10,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb5160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:10, skipping insertion in model container [2018-10-24 23:37:10,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:10" (1/1) ... [2018-10-24 23:37:10,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:37:10,382 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:37:10,910 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:37:10,915 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:37:11,051 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:37:11,071 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:37:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11 WrapperNode [2018-10-24 23:37:11,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:37:11,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:37:11,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:37:11,074 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:37:11,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:37:11,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:37:11,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:37:11,299 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:37:11,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (1/1) ... [2018-10-24 23:37:11,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:37:11,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:37:11,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:37:11,428 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:37:11,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (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 23:37:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:37:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:37:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:37:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:37:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:37:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:37:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:37:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:37:15,425 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:37:15,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:15 BoogieIcfgContainer [2018-10-24 23:37:15,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:37:15,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:37:15,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:37:15,431 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:37:15,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:37:10" (1/3) ... [2018-10-24 23:37:15,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8fb945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:15, skipping insertion in model container [2018-10-24 23:37:15,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:11" (2/3) ... [2018-10-24 23:37:15,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8fb945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:15, skipping insertion in model container [2018-10-24 23:37:15,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:15" (3/3) ... [2018-10-24 23:37:15,435 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 23:37:15,445 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:37:15,459 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:37:15,478 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:37:15,517 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:37:15,518 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:37:15,518 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:37:15,518 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:37:15,518 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:37:15,518 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:37:15,519 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:37:15,519 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:37:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 23:37:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 23:37:15,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:15,555 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:37:15,557 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:15,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:15,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1967865695, now seen corresponding path program 1 times [2018-10-24 23:37:15,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:15,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:15,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:15,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:15,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:15,932 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 23:37:15,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:15,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:37:15,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:15,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:37:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:37:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:37:15,972 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 23:37:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:18,211 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 23:37:18,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:37:18,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-24 23:37:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:18,235 INFO L225 Difference]: With dead ends: 691 [2018-10-24 23:37:18,235 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 23:37:18,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:37:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 23:37:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 23:37:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 23:37:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 23:37:18,328 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 19 [2018-10-24 23:37:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:18,329 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 23:37:18,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:37:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 23:37:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 23:37:18,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:18,335 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:37:18,335 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:18,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:18,336 INFO L82 PathProgramCache]: Analyzing trace with hash 996215900, now seen corresponding path program 1 times [2018-10-24 23:37:18,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:18,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:18,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:18,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:18,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:37:18,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:18,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:37:18,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:18,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:37:18,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:37:18,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:37:18,625 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 23:37:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:22,114 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-24 23:37:22,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:37:22,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-24 23:37:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:22,127 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 23:37:22,128 INFO L226 Difference]: Without dead ends: 1160 [2018-10-24 23:37:22,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:37:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-24 23:37:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-24 23:37:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 23:37:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-24 23:37:22,246 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 89 [2018-10-24 23:37:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-24 23:37:22,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:37:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-24 23:37:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 23:37:22,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:22,250 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:37:22,251 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:22,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:22,251 INFO L82 PathProgramCache]: Analyzing trace with hash 443394711, now seen corresponding path program 1 times [2018-10-24 23:37:22,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:22,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:22,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:22,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:22,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:37:22,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:22,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:37:22,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:22,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:37:22,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:37:22,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:37:22,451 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-24 23:37:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:24,923 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-24 23:37:24,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:37:24,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-24 23:37:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:24,947 INFO L225 Difference]: With dead ends: 2716 [2018-10-24 23:37:24,948 INFO L226 Difference]: Without dead ends: 1569 [2018-10-24 23:37:24,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:37:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-24 23:37:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-24 23:37:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-24 23:37:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-24 23:37:25,027 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 90 [2018-10-24 23:37:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:25,028 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-24 23:37:25,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:37:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-24 23:37:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 23:37:25,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:25,032 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:37:25,033 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:25,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash 48842683, now seen corresponding path program 1 times [2018-10-24 23:37:25,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:25,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:25,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:25,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:25,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:37:25,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:25,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:37:25,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:25,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:37:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:37:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:37:25,202 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-24 23:37:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:27,556 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-24 23:37:27,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:37:27,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-24 23:37:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:27,576 INFO L225 Difference]: With dead ends: 4906 [2018-10-24 23:37:27,576 INFO L226 Difference]: Without dead ends: 3374 [2018-10-24 23:37:27,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:37:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-24 23:37:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-24 23:37:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-24 23:37:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-24 23:37:27,684 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 92 [2018-10-24 23:37:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:27,684 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-24 23:37:27,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:37:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-24 23:37:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 23:37:27,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:27,691 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:37:27,692 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:27,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1675787813, now seen corresponding path program 1 times [2018-10-24 23:37:27,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:27,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:27,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:27,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:27,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 23:37:27,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:27,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:37:27,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:27,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:37:27,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:37:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:37:27,896 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-24 23:37:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:31,222 INFO L93 Difference]: Finished difference Result 8796 states and 12469 transitions. [2018-10-24 23:37:31,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:37:31,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-24 23:37:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:31,253 INFO L225 Difference]: With dead ends: 8796 [2018-10-24 23:37:31,253 INFO L226 Difference]: Without dead ends: 5539 [2018-10-24 23:37:31,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:37:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-10-24 23:37:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5539. [2018-10-24 23:37:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2018-10-24 23:37:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7494 transitions. [2018-10-24 23:37:31,409 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7494 transitions. Word has length 177 [2018-10-24 23:37:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:31,411 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7494 transitions. [2018-10-24 23:37:31,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:37:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7494 transitions. [2018-10-24 23:37:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 23:37:31,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:31,424 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:37:31,424 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:31,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2080310447, now seen corresponding path program 1 times [2018-10-24 23:37:31,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:31,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:31,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:31,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:31,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 23:37:31,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:37:31,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:37:31,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:31,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:37:31,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:37:31,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:37:31,698 INFO L87 Difference]: Start difference. First operand 5539 states and 7494 transitions. Second operand 3 states. [2018-10-24 23:37:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:37:33,573 INFO L93 Difference]: Finished difference Result 12598 states and 17780 transitions. [2018-10-24 23:37:33,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:37:33,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2018-10-24 23:37:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:37:33,608 INFO L225 Difference]: With dead ends: 12598 [2018-10-24 23:37:33,608 INFO L226 Difference]: Without dead ends: 7065 [2018-10-24 23:37:33,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:37:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2018-10-24 23:37:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 7060. [2018-10-24 23:37:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2018-10-24 23:37:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 9592 transitions. [2018-10-24 23:37:33,830 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 9592 transitions. Word has length 237 [2018-10-24 23:37:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:37:33,830 INFO L481 AbstractCegarLoop]: Abstraction has 7060 states and 9592 transitions. [2018-10-24 23:37:33,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:37:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 9592 transitions. [2018-10-24 23:37:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 23:37:33,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:37:33,853 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:37:33,853 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:37:33,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:33,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1716679298, now seen corresponding path program 1 times [2018-10-24 23:37:33,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:37:33,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:33,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:37:33,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:37:33,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:37:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:37:34,512 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 23:37:34,741 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-24 23:37:34,853 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-24 23:37:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:37:35,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:37:35,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:37:35,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 23:37:35,503 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [495], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [734], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 23:37:35,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:37:35,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:37:40,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:37:40,533 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:37:40,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:37:40,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:37:44,445 INFO L232 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 77.32% of their original sizes. [2018-10-24 23:37:44,445 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:37:44,711 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 23:37:44,711 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:37:44,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:37:44,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-10-24 23:37:44,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:37:44,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:37:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:37:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:37:44,714 INFO L87 Difference]: Start difference. First operand 7060 states and 9592 transitions. Second operand 6 states. [2018-10-24 23:37:58,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:37:58,668 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: 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: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: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.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.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$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) 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) [2018-10-24 23:37:58,674 INFO L168 Benchmark]: Toolchain (without parser) took 48382.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,675 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 23:37:58,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.31 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 225.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,677 INFO L168 Benchmark]: Boogie Preprocessor took 128.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,678 INFO L168 Benchmark]: RCFGBuilder took 3998.40 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: 129.0 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,679 INFO L168 Benchmark]: TraceAbstraction took 43245.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 182.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:37:58,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 779.31 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 225.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3998.40 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: 129.0 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43245.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 182.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...