java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:19,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:19,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:19,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:19,457 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:19,458 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:19,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:19,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:19,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:19,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:19,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:19,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:19,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:19,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:19,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:19,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:19,469 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:19,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:19,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:19,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:19,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:19,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:19,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:19,480 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:19,480 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:19,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:19,482 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:19,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:19,484 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:19,485 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:19,485 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:19,487 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:19,487 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:19,487 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:19,489 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:19,493 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:19,493 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:56:19,524 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:19,524 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:19,526 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:19,526 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:19,527 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:19,527 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:19,527 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:19,527 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:19,527 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:19,528 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:19,528 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:19,529 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:19,529 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:19,530 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:19,530 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:19,530 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:19,530 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:19,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:19,531 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:19,532 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:19,532 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:19,532 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:19,532 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:19,533 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:19,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:19,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:19,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:19,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:19,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:19,534 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:19,534 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:19,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:19,535 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:19,535 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:19,535 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:19,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:19,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:19,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:19,603 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:19,604 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:19,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c [2018-11-07 18:56:19,674 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427fed08d/8e71a76f865c4e63bd9c40d6d4c7c4c0/FLAGc8c8263d3 [2018-11-07 18:56:20,408 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:20,408 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c [2018-11-07 18:56:20,430 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427fed08d/8e71a76f865c4e63bd9c40d6d4c7c4c0/FLAGc8c8263d3 [2018-11-07 18:56:20,450 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427fed08d/8e71a76f865c4e63bd9c40d6d4c7c4c0 [2018-11-07 18:56:20,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:20,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:20,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:20,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:20,469 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:20,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:20" (1/1) ... [2018-11-07 18:56:20,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e1a716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:20, skipping insertion in model container [2018-11-07 18:56:20,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:20" (1/1) ... [2018-11-07 18:56:20,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:20,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:21,232 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:21,238 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:21,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:21,489 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:21,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21 WrapperNode [2018-11-07 18:56:21,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:21,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:21,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:21,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:21,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:21,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:21,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:21,704 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:21,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:21,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:21,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:21,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:21,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:21,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:21,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:21,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:21,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:21,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:26,284 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:26,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:26 BoogieIcfgContainer [2018-11-07 18:56:26,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:26,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:26,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:26,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:26,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:20" (1/3) ... [2018-11-07 18:56:26,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba04ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:26, skipping insertion in model container [2018-11-07 18:56:26,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (2/3) ... [2018-11-07 18:56:26,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba04ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:26, skipping insertion in model container [2018-11-07 18:56:26,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:26" (3/3) ... [2018-11-07 18:56:26,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label42_true-unreach-call.c [2018-11-07 18:56:26,305 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:26,315 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:26,335 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:26,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:26,376 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:26,376 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:26,376 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:26,376 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:26,377 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:26,377 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:26,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-07 18:56:26,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:26,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:26,436 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:26,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:26,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1722479500, now seen corresponding path program 1 times [2018-11-07 18:56:26,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:26,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:26,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:27,571 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:27,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:27,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:56:27,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:27,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:56:28,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:56:28,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:28,013 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 18:56:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:31,670 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-11-07 18:56:31,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:56:31,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-11-07 18:56:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:31,697 INFO L225 Difference]: With dead ends: 1080 [2018-11-07 18:56:31,697 INFO L226 Difference]: Without dead ends: 762 [2018-11-07 18:56:31,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-11-07 18:56:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-11-07 18:56:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-07 18:56:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-07 18:56:31,809 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 203 [2018-11-07 18:56:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:31,811 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-07 18:56:31,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:56:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-07 18:56:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 18:56:31,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:31,822 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:31,823 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:31,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash 951455952, now seen corresponding path program 1 times [2018-11-07 18:56:31,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:31,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:31,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:31,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:31,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:32,224 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:32,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:32,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 18:56:32,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:32,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:56:32,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:56:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:56:32,306 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-11-07 18:56:33,029 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-11-07 18:56:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:35,985 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-11-07 18:56:35,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 18:56:35,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-11-07 18:56:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:36,007 INFO L225 Difference]: With dead ends: 1609 [2018-11-07 18:56:36,007 INFO L226 Difference]: Without dead ends: 1095 [2018-11-07 18:56:36,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:56:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-11-07 18:56:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-11-07 18:56:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-11-07 18:56:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-11-07 18:56:36,125 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 220 [2018-11-07 18:56:36,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:36,125 INFO L480 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-11-07 18:56:36,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:56:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-11-07 18:56:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 18:56:36,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:36,133 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:36,134 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:36,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:36,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1564649131, now seen corresponding path program 1 times [2018-11-07 18:56:36,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:36,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:36,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:36,444 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:36,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:36,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:56:36,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:36,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:56:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:56:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:56:36,770 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-11-07 18:56:40,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:40,639 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-11-07 18:56:40,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:56:40,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-11-07 18:56:40,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:40,660 INFO L225 Difference]: With dead ends: 3134 [2018-11-07 18:56:40,660 INFO L226 Difference]: Without dead ends: 2110 [2018-11-07 18:56:40,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:56:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-11-07 18:56:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-11-07 18:56:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-11-07 18:56:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-11-07 18:56:40,758 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 221 [2018-11-07 18:56:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:40,758 INFO L480 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-11-07 18:56:40,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:56:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-11-07 18:56:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 18:56:40,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:40,769 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:40,769 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:40,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:40,770 INFO L82 PathProgramCache]: Analyzing trace with hash -767863881, now seen corresponding path program 1 times [2018-11-07 18:56:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:40,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:40,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:40,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:41,014 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:56:41,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:41,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:41,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-07 18:56:41,116 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [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], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:41,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:41,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:42,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:42,561 INFO L272 AbstractInterpreter]: Visited 204 different actions 204 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 18:56:42,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:42,604 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:43,810 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 74.63% of their original sizes. [2018-11-07 18:56:43,810 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:45,622 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-07 18:56:45,622 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:45,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:45,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 18:56:45,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:45,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:56:45,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:56:45,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:56:45,625 INFO L87 Difference]: Start difference. First operand 2036 states and 3605 transitions. Second operand 21 states. [2018-11-07 18:57:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:23,312 INFO L93 Difference]: Finished difference Result 4276 states and 7590 transitions. [2018-11-07 18:57:23,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:57:23,312 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 230 [2018-11-07 18:57:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:23,323 INFO L225 Difference]: With dead ends: 4276 [2018-11-07 18:57:23,324 INFO L226 Difference]: Without dead ends: 2246 [2018-11-07 18:57:23,329 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:57:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-11-07 18:57:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2244. [2018-11-07 18:57:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 18:57:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3822 transitions. [2018-11-07 18:57:23,393 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3822 transitions. Word has length 230 [2018-11-07 18:57:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:23,393 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3822 transitions. [2018-11-07 18:57:23,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 18:57:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3822 transitions. [2018-11-07 18:57:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-07 18:57:23,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:23,402 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:57:23,403 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:23,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash 72160122, now seen corresponding path program 1 times [2018-11-07 18:57:23,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:23,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:23,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:23,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:23,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:57:23,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:23,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:23,630 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-07 18:57:23,631 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [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], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:23,641 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:23,641 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:25,192 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:25,193 INFO L272 AbstractInterpreter]: Visited 208 different actions 410 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:57:25,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:25,200 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:26,574 INFO L227 lantSequenceWeakener]: Weakened 107 states. On average, predicates are now at 79.95% of their original sizes. [2018-11-07 18:57:26,575 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:29,253 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-11-07 18:57:29,254 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:29,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:29,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [9] total 33 [2018-11-07 18:57:29,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:29,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-07 18:57:29,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-07 18:57:29,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:57:29,256 INFO L87 Difference]: Start difference. First operand 2244 states and 3822 transitions. Second operand 26 states. [2018-11-07 18:58:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:20,524 INFO L93 Difference]: Finished difference Result 4488 states and 7812 transitions. [2018-11-07 18:58:20,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:58:20,524 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 242 [2018-11-07 18:58:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:20,536 INFO L225 Difference]: With dead ends: 4488 [2018-11-07 18:58:20,536 INFO L226 Difference]: Without dead ends: 2458 [2018-11-07 18:58:20,542 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 201 SyntacticMatches, 16 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:58:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2018-11-07 18:58:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2455. [2018-11-07 18:58:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2018-11-07 18:58:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4048 transitions. [2018-11-07 18:58:20,603 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4048 transitions. Word has length 242 [2018-11-07 18:58:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:20,603 INFO L480 AbstractCegarLoop]: Abstraction has 2455 states and 4048 transitions. [2018-11-07 18:58:20,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-07 18:58:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4048 transitions. [2018-11-07 18:58:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-07 18:58:20,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:20,613 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:58:20,613 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:20,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 616040287, now seen corresponding path program 1 times [2018-11-07 18:58:20,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:20,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:20,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:20,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:20,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:20,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:20,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:20,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-07 18:58:20,839 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [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], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:20,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:20,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:22,728 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:58:22,729 INFO L272 AbstractInterpreter]: Visited 207 different actions 407 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:58:22,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:22,739 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:58:23,624 INFO L227 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 74.22% of their original sizes. [2018-11-07 18:58:23,625 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:58:23,871 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-11-07 18:58:23,871 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:58:23,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:58:23,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:58:23,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:58:23,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:58:23,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:58:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:58:23,873 INFO L87 Difference]: Start difference. First operand 2455 states and 4048 transitions. Second operand 17 states. [2018-11-07 18:59:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:07,073 INFO L93 Difference]: Finished difference Result 6709 states and 11973 transitions. [2018-11-07 18:59:07,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:59:07,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 242 [2018-11-07 18:59:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:07,093 INFO L225 Difference]: With dead ends: 6709 [2018-11-07 18:59:07,093 INFO L226 Difference]: Without dead ends: 4679 [2018-11-07 18:59:07,103 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:59:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2018-11-07 18:59:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4672. [2018-11-07 18:59:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2018-11-07 18:59:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 6826 transitions. [2018-11-07 18:59:07,223 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 6826 transitions. Word has length 242 [2018-11-07 18:59:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:07,224 INFO L480 AbstractCegarLoop]: Abstraction has 4672 states and 6826 transitions. [2018-11-07 18:59:07,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:59:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 6826 transitions. [2018-11-07 18:59:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-07 18:59:07,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:07,240 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:07,240 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:07,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1014058910, now seen corresponding path program 1 times [2018-11-07 18:59:07,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:07,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:07,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:07,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:07,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:07,535 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:59:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:59:07,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:07,730 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:07,730 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-11-07 18:59:07,731 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [44], [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], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:07,736 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:07,737 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:11,167 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:11,167 INFO L272 AbstractInterpreter]: Visited 209 different actions 623 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:59:11,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:11,177 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:11,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:11,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 18:59:11,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:11,188 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:11,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 18:59:12,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:12,330 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 18:59:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 57 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 18:59:12,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:59:12,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 18:59:12,690 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:59:12,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:59:12,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:59:12,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:59:12,692 INFO L87 Difference]: Start difference. First operand 4672 states and 6826 transitions. Second operand 12 states. [2018-11-07 18:59:13,347 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-07 18:59:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:20,678 INFO L93 Difference]: Finished difference Result 19680 states and 34117 transitions. [2018-11-07 18:59:20,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 18:59:20,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2018-11-07 18:59:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:20,765 INFO L225 Difference]: With dead ends: 19680 [2018-11-07 18:59:20,765 INFO L226 Difference]: Without dead ends: 15014 [2018-11-07 18:59:20,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 530 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 18:59:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15014 states. [2018-11-07 18:59:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15014 to 15005. [2018-11-07 18:59:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15005 states. [2018-11-07 18:59:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 23038 transitions. [2018-11-07 18:59:21,754 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 23038 transitions. Word has length 254 [2018-11-07 18:59:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:21,754 INFO L480 AbstractCegarLoop]: Abstraction has 15005 states and 23038 transitions. [2018-11-07 18:59:21,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 18:59:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 23038 transitions. [2018-11-07 18:59:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-07 18:59:21,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:21,838 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:21,839 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:21,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:21,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1776241729, now seen corresponding path program 1 times [2018-11-07 18:59:21,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:21,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:21,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:21,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:21,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 160 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 18:59:22,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:22,522 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:22,523 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-11-07 18:59:22,523 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [79], [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], [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], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:22,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:22,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:24,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:59:24,710 INFO L272 AbstractInterpreter]: Visited 208 different actions 410 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:59:24,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:24,748 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:59:26,269 INFO L227 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 72.89% of their original sizes. [2018-11-07 18:59:26,269 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:59:26,601 INFO L415 sIntCurrentIteration]: We unified 344 AI predicates to 344 [2018-11-07 18:59:26,601 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:59:26,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:59:26,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 18:59:26,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:59:26,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:59:26,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:59:26,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:59:26,603 INFO L87 Difference]: Start difference. First operand 15005 states and 23038 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 19:00:11,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 19:00:11,798 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:11,803 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:11,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:11 BoogieIcfgContainer [2018-11-07 19:00:11,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:11,804 INFO L168 Benchmark]: Toolchain (without parser) took 231341.14 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 1.7 GB in the end (delta: -293.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:11,805 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:11,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1025.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:11,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:11,807 INFO L168 Benchmark]: Boogie Preprocessor took 155.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:11,809 INFO L168 Benchmark]: RCFGBuilder took 4425.81 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: 251.3 MB). Peak memory consumption was 251.3 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:11,809 INFO L168 Benchmark]: TraceAbstraction took 225517.05 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 1.7 GB in the end (delta: 249.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:11,815 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1025.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4425.81 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: 251.3 MB). Peak memory consumption was 251.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225517.05 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 1.7 GB in the end (delta: 249.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1623]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1623). Cancelled while BasicCegarLoop was constructing difference of abstraction (15005states) and FLOYD_HOARE automaton (currently 14 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (6859 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 225.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 196.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1647 SDtfs, 13168 SDslu, 3531 SDs, 0 SdLazy, 18763 SolverSat, 3424 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.7s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1686 GetRequests, 1501 SyntacticMatches, 22 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15005occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.6s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9989957970897246 AbsIntWeakeningRatio, 0.24928909952606634 AbsIntAvgWeakeningVarsNumRemoved, 59.01706161137441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 402 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2211 NumberOfCodeBlocks, 2211 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2455 ConstructedInterpolants, 0 QuantifiedInterpolants, 1167468 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1227 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 525/612 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown