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/Problem03_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:49,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:49,404 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:49,419 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:49,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:49,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:49,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:49,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:49,425 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:49,426 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:49,427 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:49,427 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:49,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:49,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:49,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:49,433 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:49,434 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:49,436 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:49,441 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:49,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:49,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:49,450 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:49,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:41:49,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:41:49,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:41:49,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:41:49,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:41:49,460 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:41:49,461 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:41:49,462 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:41:49,462 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:41:49,463 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:41:49,466 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 22:41:49,490 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:49,491 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:49,491 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:49,492 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:49,492 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:49,492 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:49,492 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:49,492 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:49,493 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:49,493 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:49,493 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:49,493 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:49,493 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:49,494 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:49,494 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:49,494 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:49,495 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:49,495 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:49,495 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:49,495 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:49,495 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:49,496 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:49,496 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:49,496 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:49,496 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:49,496 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:49,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:49,497 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:49,497 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:49,497 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:49,497 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:49,498 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:49,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:49,498 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:49,498 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:49,498 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:49,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:49,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:49,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:49,575 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:49,575 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:49,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43_false-unreach-call.c [2018-10-24 22:41:49,639 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c157857e9/aa658f1f99104282bdb9756599637d07/FLAG2cf4938dc [2018-10-24 22:41:50,368 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:50,369 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43_false-unreach-call.c [2018-10-24 22:41:50,388 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c157857e9/aa658f1f99104282bdb9756599637d07/FLAG2cf4938dc [2018-10-24 22:41:50,407 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c157857e9/aa658f1f99104282bdb9756599637d07 [2018-10-24 22:41:50,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:50,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:50,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:50,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:50,427 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:50,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:50" (1/1) ... [2018-10-24 22:41:50,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b21ccce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:50, skipping insertion in model container [2018-10-24 22:41:50,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:50" (1/1) ... [2018-10-24 22:41:50,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:50,558 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:51,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:51,294 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:51,529 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:51,553 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:51,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51 WrapperNode [2018-10-24 22:41:51,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:51,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:51,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:51,556 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:51,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:51,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:51,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:51,870 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:51,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (1/1) ... [2018-10-24 22:41:51,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:51,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:51,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:51,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:51,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (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 22:41:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:56,870 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:56,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:56 BoogieIcfgContainer [2018-10-24 22:41:56,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:56,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:56,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:56,883 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:56,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:50" (1/3) ... [2018-10-24 22:41:56,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0a5a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:56, skipping insertion in model container [2018-10-24 22:41:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:51" (2/3) ... [2018-10-24 22:41:56,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0a5a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:56, skipping insertion in model container [2018-10-24 22:41:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:56" (3/3) ... [2018-10-24 22:41:56,888 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label43_false-unreach-call.c [2018-10-24 22:41:56,898 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:56,911 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:56,931 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:56,981 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:56,981 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:56,982 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:56,982 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:56,982 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:56,982 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:56,982 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:56,983 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 22:41:57,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:57,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:57,061 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:57,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:57,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1369692532, now seen corresponding path program 1 times [2018-10-24 22:41:57,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:57,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:57,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:57,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:57,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:58,019 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-24 22:41:58,342 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 22:41:58,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:58,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:41:58,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:58,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:41:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:41:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:41:58,376 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 22:42:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:02,051 INFO L93 Difference]: Finished difference Result 1066 states and 1924 transitions. [2018-10-24 22:42:02,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:42:02,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-24 22:42:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:02,081 INFO L225 Difference]: With dead ends: 1066 [2018-10-24 22:42:02,082 INFO L226 Difference]: Without dead ends: 748 [2018-10-24 22:42:02,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:42:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-24 22:42:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2018-10-24 22:42:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-24 22:42:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 902 transitions. [2018-10-24 22:42:02,200 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 902 transitions. Word has length 157 [2018-10-24 22:42:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:02,201 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 902 transitions. [2018-10-24 22:42:02,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:42:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 902 transitions. [2018-10-24 22:42:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 22:42:02,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:02,208 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:02,209 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:02,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1257030803, now seen corresponding path program 1 times [2018-10-24 22:42:02,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:02,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:02,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:02,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:02,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:02,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:02,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:42:02,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:02,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:42:02,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:42:02,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:42:02,758 INFO L87 Difference]: Start difference. First operand 527 states and 902 transitions. Second operand 6 states. [2018-10-24 22:42:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:05,771 INFO L93 Difference]: Finished difference Result 1590 states and 2793 transitions. [2018-10-24 22:42:05,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:42:05,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-24 22:42:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:05,801 INFO L225 Difference]: With dead ends: 1590 [2018-10-24 22:42:05,801 INFO L226 Difference]: Without dead ends: 1069 [2018-10-24 22:42:05,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:42:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-24 22:42:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-10-24 22:42:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-10-24 22:42:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1746 transitions. [2018-10-24 22:42:05,905 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1746 transitions. Word has length 167 [2018-10-24 22:42:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:05,905 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1746 transitions. [2018-10-24 22:42:05,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:42:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1746 transitions. [2018-10-24 22:42:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 22:42:05,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:05,915 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:05,915 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:05,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1501741467, now seen corresponding path program 1 times [2018-10-24 22:42:05,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:05,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:05,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:05,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:05,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:06,226 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:42:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:06,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:06,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:42:06,412 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:06,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:42:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:42:06,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:42:06,413 INFO L87 Difference]: Start difference. First operand 1024 states and 1746 transitions. Second operand 5 states. [2018-10-24 22:42:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:09,675 INFO L93 Difference]: Finished difference Result 3166 states and 5674 transitions. [2018-10-24 22:42:09,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:42:09,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2018-10-24 22:42:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:09,697 INFO L225 Difference]: With dead ends: 3166 [2018-10-24 22:42:09,697 INFO L226 Difference]: Without dead ends: 2148 [2018-10-24 22:42:09,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:42:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-10-24 22:42:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-10-24 22:42:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-10-24 22:42:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3422 transitions. [2018-10-24 22:42:09,803 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3422 transitions. Word has length 168 [2018-10-24 22:42:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:09,804 INFO L481 AbstractCegarLoop]: Abstraction has 2105 states and 3422 transitions. [2018-10-24 22:42:09,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:42:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3422 transitions. [2018-10-24 22:42:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 22:42:09,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:09,811 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:09,811 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:09,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2091995536, now seen corresponding path program 1 times [2018-10-24 22:42:09,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:09,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:09,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:09,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:09,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:10,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:10,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:42:10,167 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:10,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:42:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:42:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:10,169 INFO L87 Difference]: Start difference. First operand 2105 states and 3422 transitions. Second operand 3 states. [2018-10-24 22:42:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:12,821 INFO L93 Difference]: Finished difference Result 6103 states and 10298 transitions. [2018-10-24 22:42:12,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:42:12,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-10-24 22:42:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:12,853 INFO L225 Difference]: With dead ends: 6103 [2018-10-24 22:42:12,853 INFO L226 Difference]: Without dead ends: 4004 [2018-10-24 22:42:12,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 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 22:42:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2018-10-24 22:42:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3997. [2018-10-24 22:42:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2018-10-24 22:42:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6338 transitions. [2018-10-24 22:42:12,993 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6338 transitions. Word has length 170 [2018-10-24 22:42:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:12,994 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6338 transitions. [2018-10-24 22:42:12,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:42:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6338 transitions. [2018-10-24 22:42:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 22:42:13,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:13,005 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:13,005 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:13,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2082264545, now seen corresponding path program 1 times [2018-10-24 22:42:13,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:13,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:13,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:13,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:13,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:13,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:13,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:42:13,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:13,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:42:13,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:42:13,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:42:13,206 INFO L87 Difference]: Start difference. First operand 3997 states and 6338 transitions. Second operand 6 states. [2018-10-24 22:42:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:15,137 INFO L93 Difference]: Finished difference Result 12245 states and 21126 transitions. [2018-10-24 22:42:15,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:42:15,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 22:42:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:15,197 INFO L225 Difference]: With dead ends: 12245 [2018-10-24 22:42:15,198 INFO L226 Difference]: Without dead ends: 8254 [2018-10-24 22:42:15,230 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 22:42:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2018-10-24 22:42:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8069. [2018-10-24 22:42:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2018-10-24 22:42:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 12454 transitions. [2018-10-24 22:42:15,515 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 12454 transitions. Word has length 177 [2018-10-24 22:42:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:15,515 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 12454 transitions. [2018-10-24 22:42:15,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:42:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 12454 transitions. [2018-10-24 22:42:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 22:42:15,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:15,535 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:15,535 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:15,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1864572249, now seen corresponding path program 1 times [2018-10-24 22:42:15,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:15,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:15,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:15,812 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:42:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:15,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:15,977 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:15,978 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 22:42:15,983 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:16,047 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:16,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:17,133 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:17,135 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:42:17,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:17,181 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:18,413 INFO L232 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 70.42% of their original sizes. [2018-10-24 22:42:18,413 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:42:19,799 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 22:42:19,799 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:42:19,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:19,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-10-24 22:42:19,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:19,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 22:42:19,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 22:42:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-10-24 22:42:19,802 INFO L87 Difference]: Start difference. First operand 8069 states and 12454 transitions. Second operand 17 states. [2018-10-24 22:42:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:54,536 INFO L93 Difference]: Finished difference Result 16342 states and 25205 transitions. [2018-10-24 22:42:54,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:42:54,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 181 [2018-10-24 22:42:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:54,578 INFO L225 Difference]: With dead ends: 16342 [2018-10-24 22:42:54,578 INFO L226 Difference]: Without dead ends: 8279 [2018-10-24 22:42:54,609 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:42:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2018-10-24 22:42:54,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 8277. [2018-10-24 22:42:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2018-10-24 22:42:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 12672 transitions. [2018-10-24 22:42:54,856 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 12672 transitions. Word has length 181 [2018-10-24 22:42:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:54,857 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 12672 transitions. [2018-10-24 22:42:54,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 22:42:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 12672 transitions. [2018-10-24 22:42:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 22:42:54,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:54,878 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:54,879 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:54,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash -47252174, now seen corresponding path program 1 times [2018-10-24 22:42:54,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:54,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:54,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:54,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:54,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:55,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:55,194 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:55,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 22:42:55,196 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:55,208 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:55,209 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:57,462 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:42:57,462 INFO L272 AbstractInterpreter]: Visited 163 different actions 317 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:42:57,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:57,476 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:42:57,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:57,477 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 [2018-10-24 22:42:57,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:57,485 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:42:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:57,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:42:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:42:57,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:42:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:42:57,914 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:57,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-10-24 22:42:57,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:57,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:42:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:42:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:42:57,916 INFO L87 Difference]: Start difference. First operand 8277 states and 12672 transitions. Second operand 3 states. [2018-10-24 22:42:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:58,951 INFO L93 Difference]: Finished difference Result 16337 states and 25118 transitions. [2018-10-24 22:42:58,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:42:58,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-10-24 22:42:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:58,991 INFO L225 Difference]: With dead ends: 16337 [2018-10-24 22:42:58,991 INFO L226 Difference]: Without dead ends: 8274 [2018-10-24 22:42:59,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:42:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8274 states. [2018-10-24 22:42:59,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8274 to 8274. [2018-10-24 22:42:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2018-10-24 22:42:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 12661 transitions. [2018-10-24 22:42:59,236 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 12661 transitions. Word has length 190 [2018-10-24 22:42:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:59,236 INFO L481 AbstractCegarLoop]: Abstraction has 8274 states and 12661 transitions. [2018-10-24 22:42:59,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:42:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 12661 transitions. [2018-10-24 22:42:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 22:42:59,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:59,258 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:59,259 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:59,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash 321080033, now seen corresponding path program 1 times [2018-10-24 22:42:59,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:59,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:59,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:59,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:59,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:42:59,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:59,611 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:59,612 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-24 22:42:59,612 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:59,628 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:59,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:04,006 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:43:04,006 INFO L272 AbstractInterpreter]: Visited 165 different actions 501 times. Merged at 8 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:43:04,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:04,016 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:43:04,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:04,016 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:43:04,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:04,024 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:43:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:04,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:43:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:43:04,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:43:04,684 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 22:43:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:43:05,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:43:05,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-24 22:43:05,070 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:43:05,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:43:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:43:05,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:43:05,073 INFO L87 Difference]: Start difference. First operand 8274 states and 12661 transitions. Second operand 8 states. [2018-10-24 22:43:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:11,170 INFO L93 Difference]: Finished difference Result 29862 states and 58777 transitions. [2018-10-24 22:43:11,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:43:11,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2018-10-24 22:43:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:11,369 INFO L225 Difference]: With dead ends: 29862 [2018-10-24 22:43:11,370 INFO L226 Difference]: Without dead ends: 21802 [2018-10-24 22:43:11,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:43:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21802 states. [2018-10-24 22:43:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21802 to 21309. [2018-10-24 22:43:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21309 states. [2018-10-24 22:43:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21309 states to 21309 states and 34974 transitions. [2018-10-24 22:43:12,593 INFO L78 Accepts]: Start accepts. Automaton has 21309 states and 34974 transitions. Word has length 210 [2018-10-24 22:43:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:12,594 INFO L481 AbstractCegarLoop]: Abstraction has 21309 states and 34974 transitions. [2018-10-24 22:43:12,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:43:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21309 states and 34974 transitions. [2018-10-24 22:43:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 22:43:12,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:12,678 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:12,678 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:12,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:12,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1873025378, now seen corresponding path program 1 times [2018-10-24 22:43:12,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:12,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:12,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:12,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:12,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:13,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:13,241 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:13,242 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-24 22:43:13,242 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [147], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:13,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:13,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:15,941 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:43:15,941 INFO L272 AbstractInterpreter]: Visited 162 different actions 316 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:15,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:15,950 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:43:15,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:15,950 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:43:15,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:15,960 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:43:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:16,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:43:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:43:16,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:43:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:43:17,066 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:17,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-24 22:43:17,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:17,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:43:17,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:43:17,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:43:17,069 INFO L87 Difference]: Start difference. First operand 21309 states and 34974 transitions. Second operand 3 states. [2018-10-24 22:43:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:18,976 INFO L93 Difference]: Finished difference Result 48092 states and 80419 transitions. [2018-10-24 22:43:18,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:43:18,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-10-24 22:43:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:19,144 INFO L225 Difference]: With dead ends: 48092 [2018-10-24 22:43:19,144 INFO L226 Difference]: Without dead ends: 27107 [2018-10-24 22:43:19,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:43:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27107 states. [2018-10-24 22:43:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27107 to 27102. [2018-10-24 22:43:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27102 states. [2018-10-24 22:43:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27102 states to 27102 states and 45018 transitions. [2018-10-24 22:43:20,127 INFO L78 Accepts]: Start accepts. Automaton has 27102 states and 45018 transitions. Word has length 220 [2018-10-24 22:43:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:20,128 INFO L481 AbstractCegarLoop]: Abstraction has 27102 states and 45018 transitions. [2018-10-24 22:43:20,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:43:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 27102 states and 45018 transitions. [2018-10-24 22:43:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-24 22:43:20,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:20,194 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:43:20,194 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:20,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:20,195 INFO L82 PathProgramCache]: Analyzing trace with hash 87158770, now seen corresponding path program 1 times [2018-10-24 22:43:20,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:20,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:20,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:20,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:20,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:43:20,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:20,457 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:20,457 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-24 22:43:20,457 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:20,464 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:20,464 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:26,428 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:43:26,428 INFO L272 AbstractInterpreter]: Visited 163 different actions 479 times. Merged at 7 different actions 13 times. Never widened. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:26,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:26,435 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:43:26,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:26,435 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:43:26,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:26,444 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:43:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:26,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:43:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:43:26,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:43:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:43:27,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:43:27,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:43:27,195 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:43:27,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:43:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:43:27,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:43:27,196 INFO L87 Difference]: Start difference. First operand 27102 states and 45018 transitions. Second operand 9 states. [2018-10-24 22:43:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:31,577 INFO L93 Difference]: Finished difference Result 75360 states and 137131 transitions. [2018-10-24 22:43:31,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 22:43:31,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2018-10-24 22:43:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:32,028 INFO L225 Difference]: With dead ends: 75360 [2018-10-24 22:43:32,029 INFO L226 Difference]: Without dead ends: 48472 [2018-10-24 22:43:32,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 465 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:43:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48472 states. [2018-10-24 22:43:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48472 to 45661. [2018-10-24 22:43:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45661 states. [2018-10-24 22:43:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45661 states to 45661 states and 72241 transitions. [2018-10-24 22:43:33,819 INFO L78 Accepts]: Start accepts. Automaton has 45661 states and 72241 transitions. Word has length 232 [2018-10-24 22:43:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:33,819 INFO L481 AbstractCegarLoop]: Abstraction has 45661 states and 72241 transitions. [2018-10-24 22:43:33,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:43:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 45661 states and 72241 transitions. [2018-10-24 22:43:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 22:43:33,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:33,880 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:33,880 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:33,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1686035612, now seen corresponding path program 1 times [2018-10-24 22:43:33,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:33,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:33,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:33,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:33,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:43:34,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:34,167 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:34,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-24 22:43:34,168 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [260], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:34,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:34,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:34,933 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:43:34,933 INFO L272 AbstractInterpreter]: Visited 161 different actions 316 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:34,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:34,943 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:43:36,688 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 70.32% of their original sizes. [2018-10-24 22:43:36,689 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:37,046 INFO L413 sIntCurrentIteration]: We have 232 unified AI predicates [2018-10-24 22:43:37,046 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:37,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:37,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 22:43:37,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:37,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 22:43:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 22:43:37,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-24 22:43:37,049 INFO L87 Difference]: Start difference. First operand 45661 states and 72241 transitions. Second operand 20 states. [2018-10-24 22:44:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:14,805 INFO L93 Difference]: Finished difference Result 91322 states and 144567 transitions. [2018-10-24 22:44:14,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:44:14,806 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 233 [2018-10-24 22:44:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:15,101 INFO L225 Difference]: With dead ends: 91322 [2018-10-24 22:44:15,101 INFO L226 Difference]: Without dead ends: 45875 [2018-10-24 22:44:15,257 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2018-10-24 22:44:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45875 states. [2018-10-24 22:44:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45875 to 45872. [2018-10-24 22:44:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45872 states. [2018-10-24 22:44:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45872 states to 45872 states and 72463 transitions. [2018-10-24 22:44:17,046 INFO L78 Accepts]: Start accepts. Automaton has 45872 states and 72463 transitions. Word has length 233 [2018-10-24 22:44:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:17,046 INFO L481 AbstractCegarLoop]: Abstraction has 45872 states and 72463 transitions. [2018-10-24 22:44:17,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 22:44:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45872 states and 72463 transitions. [2018-10-24 22:44:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 22:44:17,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:17,111 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:17,112 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:17,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash -932129760, now seen corresponding path program 1 times [2018-10-24 22:44:17,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:17,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:17,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:17,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:17,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:17,712 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 22:44:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 148 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:44:17,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:17,972 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:17,972 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-24 22:44:17,973 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [260], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:17,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:17,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:20,381 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:20,382 INFO L272 AbstractInterpreter]: Visited 163 different actions 324 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:44:20,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:20,388 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:20,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:20,388 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:20,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:20,397 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:20,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:21,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:21,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:44:21,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:44:21,632 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:44:21,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:44:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:44:21,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:44:21,634 INFO L87 Difference]: Start difference. First operand 45872 states and 72463 transitions. Second operand 9 states. [2018-10-24 22:44:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:29,437 INFO L93 Difference]: Finished difference Result 107203 states and 170376 transitions. [2018-10-24 22:44:29,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-24 22:44:29,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2018-10-24 22:44:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:29,786 INFO L225 Difference]: With dead ends: 107203 [2018-10-24 22:44:29,787 INFO L226 Difference]: Without dead ends: 61756 [2018-10-24 22:44:29,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 612 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=500, Invalid=1950, Unknown=0, NotChecked=0, Total=2450 [2018-10-24 22:44:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61756 states. [2018-10-24 22:44:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61756 to 59798. [2018-10-24 22:44:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59798 states. [2018-10-24 22:44:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59798 states to 59798 states and 75946 transitions. [2018-10-24 22:44:31,615 INFO L78 Accepts]: Start accepts. Automaton has 59798 states and 75946 transitions. Word has length 289 [2018-10-24 22:44:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:31,615 INFO L481 AbstractCegarLoop]: Abstraction has 59798 states and 75946 transitions. [2018-10-24 22:44:31,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:44:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 59798 states and 75946 transitions. [2018-10-24 22:44:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-24 22:44:31,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:31,671 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:44:31,671 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:31,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:31,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1191580367, now seen corresponding path program 1 times [2018-10-24 22:44:31,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:31,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:31,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:31,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:31,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:32,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:32,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:32,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-24 22:44:32,326 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [600], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:32,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:32,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:36,727 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:36,728 INFO L272 AbstractInterpreter]: Visited 162 different actions 484 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:44:36,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:36,736 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:36,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:36,736 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:36,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:36,745 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:36,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:37,013 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:37,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:44:37,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-24 22:44:37,208 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:44:37,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:44:37,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:44:37,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:44:37,209 INFO L87 Difference]: Start difference. First operand 59798 states and 75946 transitions. Second operand 6 states. [2018-10-24 22:44:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:40,768 INFO L93 Difference]: Finished difference Result 126444 states and 165470 transitions. [2018-10-24 22:44:40,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:44:40,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 314 [2018-10-24 22:44:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:41,071 INFO L225 Difference]: With dead ends: 126444 [2018-10-24 22:44:41,071 INFO L226 Difference]: Without dead ends: 67071 [2018-10-24 22:44:41,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 629 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:44:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67071 states. [2018-10-24 22:44:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67071 to 64551. [2018-10-24 22:44:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64551 states. [2018-10-24 22:44:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64551 states to 64551 states and 77876 transitions. [2018-10-24 22:44:42,827 INFO L78 Accepts]: Start accepts. Automaton has 64551 states and 77876 transitions. Word has length 314 [2018-10-24 22:44:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:42,827 INFO L481 AbstractCegarLoop]: Abstraction has 64551 states and 77876 transitions. [2018-10-24 22:44:42,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:44:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 64551 states and 77876 transitions. [2018-10-24 22:44:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-24 22:44:42,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:42,865 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, 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] [2018-10-24 22:44:42,865 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:42,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1558759391, now seen corresponding path program 1 times [2018-10-24 22:44:42,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:42,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:42,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:42,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:42,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:43,557 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:44:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:43,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:43,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:43,848 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 323 with the following transitions: [2018-10-24 22:44:43,849 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [260], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:43,859 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:43,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:45,446 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:44:45,446 INFO L272 AbstractInterpreter]: Visited 161 different actions 316 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:44:45,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:45,454 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:44:48,592 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 72.29% of their original sizes. [2018-10-24 22:44:48,592 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:45:00,090 INFO L413 sIntCurrentIteration]: We have 321 unified AI predicates [2018-10-24 22:45:00,090 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:45:00,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:45:00,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 22:45:00,091 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:45:00,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 22:45:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 22:45:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-24 22:45:00,092 INFO L87 Difference]: Start difference. First operand 64551 states and 77876 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 22:45:33,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 22:45:33,541 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:33,546 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:33,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:33 BoogieIcfgContainer [2018-10-24 22:45:33,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:33,548 INFO L168 Benchmark]: Toolchain (without parser) took 223127.10 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 745.6 MB in the end (delta: 683.5 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,549 INFO L168 Benchmark]: CDTParser took 0.19 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 22:45:33,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1131.85 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 314.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -888.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,551 INFO L168 Benchmark]: Boogie Preprocessor took 120.39 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,552 INFO L168 Benchmark]: RCFGBuilder took 4885.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 272.1 MB). Peak memory consumption was 272.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,552 INFO L168 Benchmark]: TraceAbstraction took 216670.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 745.6 MB in the end (delta: 1.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:33,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1131.85 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 314.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -888.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.39 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4885.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 272.1 MB). Peak memory consumption was 272.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216670.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 745.6 MB in the end (delta: 1.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1485]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1485). Cancelled while BasicCegarLoop was constructing difference of abstraction (64551states) and FLOYD_HOARE automaton (currently 15 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (15067 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 216.5s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 148.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3090 SDtfs, 18727 SDslu, 3166 SDs, 0 SdLazy, 25362 SolverSat, 4670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3834 GetRequests, 3441 SyntacticMatches, 213 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64551occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 25.7s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9991867702200005 AbsIntWeakeningRatio, 0.25648021828103684 AbsIntAvgWeakeningVarsNumRemoved, 14.347885402455661 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 8293 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 4485 NumberOfCodeBlocks, 4485 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 5914 ConstructedInterpolants, 0 QuantifiedInterpolants, 3362245 SizeOfPredicates, 3 NumberOfNonLiveVariables, 6854 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 2388/2500 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown