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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:11:00,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:11:00,538 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:11:00,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:11:00,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:11:00,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:11:00,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:11:00,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:11:00,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:11:00,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:11:00,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:11:00,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:11:00,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:11:00,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:11:00,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:11:00,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:11:00,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:11:00,567 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:11:00,572 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:11:00,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:11:00,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:11:00,578 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:11:00,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:11:00,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:11:00,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:11:00,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:11:00,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:11:00,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:11:00,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:11:00,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:11:00,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:11:00,594 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:11:00,594 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:11:00,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:11:00,595 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:11:00,596 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:11:00,596 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:11:00,614 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:11:00,615 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:11:00,615 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:11:00,616 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:11:00,616 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:11:00,616 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:11:00,616 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:11:00,616 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:11:00,617 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:11:00,618 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:11:00,618 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:11:00,619 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:11:00,620 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:11:00,620 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:11:00,620 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:11:00,620 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:11:00,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:11:00,621 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:11:00,621 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:11:00,621 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:11:00,621 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:11:00,621 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:11:00,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:11:00,622 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:11:00,622 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:11:00,622 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:11:00,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:11:00,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:11:00,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:11:00,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:11:00,709 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:11:00,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c [2018-11-07 07:11:00,788 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adf90462/40b54378bff54ed59c031e0102caa250/FLAG5d316c694 [2018-11-07 07:11:01,472 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:11:01,473 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c [2018-11-07 07:11:01,489 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adf90462/40b54378bff54ed59c031e0102caa250/FLAG5d316c694 [2018-11-07 07:11:01,506 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adf90462/40b54378bff54ed59c031e0102caa250 [2018-11-07 07:11:01,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:11:01,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:11:01,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:11:01,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:11:01,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:11:01,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:11:01" (1/1) ... [2018-11-07 07:11:01,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45d4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:01, skipping insertion in model container [2018-11-07 07:11:01,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:11:01" (1/1) ... [2018-11-07 07:11:01,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:11:01,636 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:11:02,355 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:11:02,360 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:11:02,623 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:11:02,649 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:11:02,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02 WrapperNode [2018-11-07 07:11:02,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:11:02,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:11:02,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:11:02,651 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:11:02,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:11:02,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:11:02,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:11:02,890 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:11:02,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:02,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:03,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:03,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (1/1) ... [2018-11-07 07:11:03,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:11:03,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:11:03,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:11:03,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:11:03,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (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 07:11:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:11:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:11:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:11:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:11:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:11:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:11:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:11:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:11:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:11:08,584 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:11:08,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:11:08 BoogieIcfgContainer [2018-11-07 07:11:08,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:11:08,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:11:08,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:11:08,590 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:11:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:11:01" (1/3) ... [2018-11-07 07:11:08,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:11:08, skipping insertion in model container [2018-11-07 07:11:08,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:02" (2/3) ... [2018-11-07 07:11:08,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:11:08, skipping insertion in model container [2018-11-07 07:11:08,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:11:08" (3/3) ... [2018-11-07 07:11:08,595 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label10_true-unreach-call.c [2018-11-07 07:11:08,605 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:11:08,614 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:11:08,634 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:11:08,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:11:08,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:11:08,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:11:08,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:11:08,677 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:11:08,677 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:11:08,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:11:08,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:11:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:11:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 07:11:08,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:08,733 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] [2018-11-07 07:11:08,736 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:08,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1745062215, now seen corresponding path program 1 times [2018-11-07 07:11:08,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:08,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:08,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:08,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:08,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:09,836 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 07:11:09,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:09,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:11:09,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:09,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:11:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:11:09,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:11:09,872 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 07:11:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:11,817 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 07:11:11,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:11:11,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-11-07 07:11:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:11,843 INFO L225 Difference]: With dead ends: 838 [2018-11-07 07:11:11,843 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 07:11:11,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:11:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 07:11:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 07:11:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 07:11:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 07:11:12,002 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 188 [2018-11-07 07:11:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:12,005 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 07:11:12,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:11:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 07:11:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 07:11:12,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:12,015 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, 1, 1, 1, 1, 1, 1, 1, 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 07:11:12,016 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:12,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:12,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1171199392, now seen corresponding path program 1 times [2018-11-07 07:11:12,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:12,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:12,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:12,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:12,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:12,344 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:11:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:12,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:12,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:11:12,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:12,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:11:12,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:11:12,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:11:12,456 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 07:11:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:15,850 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 07:11:15,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:11:15,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-11-07 07:11:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:15,876 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 07:11:15,877 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 07:11:15,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:11:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 07:11:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 07:11:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 07:11:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 07:11:15,967 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 198 [2018-11-07 07:11:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:15,968 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 07:11:15,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:11:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 07:11:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 07:11:15,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:15,977 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, 1, 1, 1, 1, 1, 1, 1, 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 07:11:15,978 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:15,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1250557379, now seen corresponding path program 1 times [2018-11-07 07:11:15,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:15,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:15,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:15,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:15,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:16,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:16,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:11:16,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:16,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:11:16,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:11:16,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:11:16,298 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 07:11:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:19,008 INFO L93 Difference]: Finished difference Result 2903 states and 5102 transitions. [2018-11-07 07:11:19,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:11:19,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-11-07 07:11:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:19,024 INFO L225 Difference]: With dead ends: 2903 [2018-11-07 07:11:19,024 INFO L226 Difference]: Without dead ends: 1886 [2018-11-07 07:11:19,029 INFO L604 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 [2018-11-07 07:11:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2018-11-07 07:11:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1866. [2018-11-07 07:11:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2018-11-07 07:11:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 3136 transitions. [2018-11-07 07:11:19,109 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 3136 transitions. Word has length 201 [2018-11-07 07:11:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:19,110 INFO L480 AbstractCegarLoop]: Abstraction has 1866 states and 3136 transitions. [2018-11-07 07:11:19,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:11:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 3136 transitions. [2018-11-07 07:11:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 07:11:19,119 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:19,119 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:11:19,119 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:19,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1434088812, now seen corresponding path program 1 times [2018-11-07 07:11:19,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:19,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:19,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:19,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:19,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:19,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:11:19,382 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:11:19,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-07 07:11:19,385 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [48], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:11:19,459 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:11:19,459 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:11:20,667 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:11:20,668 INFO L272 AbstractInterpreter]: Visited 189 different actions 189 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:11:20,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:20,714 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:11:21,925 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 73.33% of their original sizes. [2018-11-07 07:11:21,925 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:11:22,355 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-11-07 07:11:22,355 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:11:22,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:11:22,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 07:11:22,357 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:22,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 07:11:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 07:11:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 07:11:22,358 INFO L87 Difference]: Start difference. First operand 1866 states and 3136 transitions. Second operand 13 states. [2018-11-07 07:11:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:40,520 INFO L93 Difference]: Finished difference Result 3936 states and 6627 transitions. [2018-11-07 07:11:40,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:11:40,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2018-11-07 07:11:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:40,532 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 07:11:40,532 INFO L226 Difference]: Without dead ends: 2076 [2018-11-07 07:11:40,537 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:11:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2018-11-07 07:11:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2074. [2018-11-07 07:11:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2018-11-07 07:11:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3354 transitions. [2018-11-07 07:11:40,592 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3354 transitions. Word has length 219 [2018-11-07 07:11:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:40,592 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 3354 transitions. [2018-11-07 07:11:40,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 07:11:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3354 transitions. [2018-11-07 07:11:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-07 07:11:40,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:40,601 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:11:40,602 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:40,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:40,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2047187745, now seen corresponding path program 1 times [2018-11-07 07:11:40,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:40,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:40,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:40,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:40,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:41,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:11:41,049 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:11:41,049 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-07 07:11:41,050 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:11:41,061 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:11:41,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:11:41,779 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:11:41,779 INFO L272 AbstractInterpreter]: Visited 192 different actions 377 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 07:11:41,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:41,789 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:11:42,483 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 75.97% of their original sizes. [2018-11-07 07:11:42,484 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:11:42,738 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-07 07:11:42,739 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:11:42,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:11:42,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 07:11:42,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:42,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 07:11:42,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 07:11:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 07:11:42,741 INFO L87 Difference]: Start difference. First operand 2074 states and 3354 transitions. Second operand 17 states. [2018-11-07 07:12:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:12:31,212 INFO L93 Difference]: Finished difference Result 6050 states and 10392 transitions. [2018-11-07 07:12:31,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:12:31,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 228 [2018-11-07 07:12:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:12:31,235 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 07:12:31,236 INFO L226 Difference]: Without dead ends: 3770 [2018-11-07 07:12:31,247 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2018-11-07 07:12:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2018-11-07 07:12:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3763. [2018-11-07 07:12:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3763 states. [2018-11-07 07:12:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 6085 transitions. [2018-11-07 07:12:31,370 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 6085 transitions. Word has length 228 [2018-11-07 07:12:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:12:31,370 INFO L480 AbstractCegarLoop]: Abstraction has 3763 states and 6085 transitions. [2018-11-07 07:12:31,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 07:12:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 6085 transitions. [2018-11-07 07:12:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 07:12:31,387 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:12:31,387 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-11-07 07:12:31,387 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:12:31,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:12:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1310677518, now seen corresponding path program 1 times [2018-11-07 07:12:31,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:12:31,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:12:31,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:12:31,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:12:31,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:12:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:12:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 50 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 07:12:31,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:12:31,917 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:12:31,917 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 07:12:31,922 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [32], [33], [37], [41], [45], [48], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:12:31,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:12:31,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:12:32,834 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:12:32,834 INFO L272 AbstractInterpreter]: Visited 193 different actions 380 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 07:12:32,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:12:32,872 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:12:33,383 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 73.66% of their original sizes. [2018-11-07 07:12:33,383 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:12:33,742 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 07:12:33,742 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:12:33,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:12:33,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 07:12:33,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:12:33,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 07:12:33,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 07:12:33,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2018-11-07 07:12:33,745 INFO L87 Difference]: Start difference. First operand 3763 states and 6085 transitions. Second operand 22 states. [2018-11-07 07:13:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:11,480 INFO L93 Difference]: Finished difference Result 7524 states and 12322 transitions. [2018-11-07 07:13:11,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:13:11,481 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 232 [2018-11-07 07:13:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:11,499 INFO L225 Difference]: With dead ends: 7524 [2018-11-07 07:13:11,500 INFO L226 Difference]: Without dead ends: 3977 [2018-11-07 07:13:11,511 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2018-11-07 07:13:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-11-07 07:13:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3974. [2018-11-07 07:13:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3974 states. [2018-11-07 07:13:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 6313 transitions. [2018-11-07 07:13:11,618 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 6313 transitions. Word has length 232 [2018-11-07 07:13:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:11,619 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 6313 transitions. [2018-11-07 07:13:11,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 07:13:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 6313 transitions. [2018-11-07 07:13:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 07:13:11,633 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:11,634 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2018-11-07 07:13:11,634 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:11,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:11,634 INFO L82 PathProgramCache]: Analyzing trace with hash -744078184, now seen corresponding path program 1 times [2018-11-07 07:13:11,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:11,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:11,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:11,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:11,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:11,913 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:13:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-07 07:13:12,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:12,241 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:12,241 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 07:13:12,242 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [48], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:12,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:12,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:13,692 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:13,692 INFO L272 AbstractInterpreter]: Visited 195 different actions 579 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:13,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:13,700 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:13,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:13,700 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 07:13:13,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:13,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:13,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-07 07:13:14,402 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 07:13:15,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:15,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 07:13:15,710 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:15,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:13:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:13:15,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:13:15,713 INFO L87 Difference]: Start difference. First operand 3974 states and 6313 transitions. Second operand 9 states. [2018-11-07 07:13:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:20,804 INFO L93 Difference]: Finished difference Result 15069 states and 28008 transitions. [2018-11-07 07:13:20,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 07:13:20,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2018-11-07 07:13:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:20,914 INFO L225 Difference]: With dead ends: 15069 [2018-11-07 07:13:20,914 INFO L226 Difference]: Without dead ends: 11522 [2018-11-07 07:13:20,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:13:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2018-11-07 07:13:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 11137. [2018-11-07 07:13:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11137 states. [2018-11-07 07:13:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11137 states to 11137 states and 16009 transitions. [2018-11-07 07:13:21,392 INFO L78 Accepts]: Start accepts. Automaton has 11137 states and 16009 transitions. Word has length 241 [2018-11-07 07:13:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:21,393 INFO L480 AbstractCegarLoop]: Abstraction has 11137 states and 16009 transitions. [2018-11-07 07:13:21,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:13:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 11137 states and 16009 transitions. [2018-11-07 07:13:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-07 07:13:21,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:21,426 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:21,427 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:21,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:21,428 INFO L82 PathProgramCache]: Analyzing trace with hash -84699834, now seen corresponding path program 1 times [2018-11-07 07:13:21,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:21,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:21,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:21,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:21,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:21,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:21,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:21,993 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-11-07 07:13:21,994 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:22,001 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:22,001 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:23,364 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:23,364 INFO L272 AbstractInterpreter]: Visited 194 different actions 579 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:23,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:23,370 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:23,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:23,370 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 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 [2018-11-07 07:13:23,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:23,380 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:23,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:23,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:24,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:24,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 07:13:24,143 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:24,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:13:24,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:13:24,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:24,144 INFO L87 Difference]: Start difference. First operand 11137 states and 16009 transitions. Second operand 6 states. [2018-11-07 07:13:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:25,196 INFO L93 Difference]: Finished difference Result 21759 states and 31546 transitions. [2018-11-07 07:13:25,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 07:13:25,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2018-11-07 07:13:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:25,242 INFO L225 Difference]: With dead ends: 21759 [2018-11-07 07:13:25,243 INFO L226 Difference]: Without dead ends: 11049 [2018-11-07 07:13:25,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 507 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:13:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11049 states. [2018-11-07 07:13:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11049 to 11049. [2018-11-07 07:13:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11049 states. [2018-11-07 07:13:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11049 states to 11049 states and 15711 transitions. [2018-11-07 07:13:25,543 INFO L78 Accepts]: Start accepts. Automaton has 11049 states and 15711 transitions. Word has length 254 [2018-11-07 07:13:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:25,544 INFO L480 AbstractCegarLoop]: Abstraction has 11049 states and 15711 transitions. [2018-11-07 07:13:25,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:13:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11049 states and 15711 transitions. [2018-11-07 07:13:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-07 07:13:25,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:25,576 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:25,577 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:25,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:25,577 INFO L82 PathProgramCache]: Analyzing trace with hash 828520908, now seen corresponding path program 1 times [2018-11-07 07:13:25,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:25,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:25,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:25,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:25,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:26,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:26,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:26,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-11-07 07:13:26,159 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], [127], [128], [132], [136], [139], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:26,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:26,165 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:27,210 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:27,211 INFO L272 AbstractInterpreter]: Visited 194 different actions 581 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:27,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:27,220 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:27,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:27,220 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 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 [2018-11-07 07:13:27,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:27,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:27,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:27,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:28,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:28,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 07:13:28,158 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:28,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:13:28,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:13:28,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:13:28,160 INFO L87 Difference]: Start difference. First operand 11049 states and 15711 transitions. Second operand 7 states. [2018-11-07 07:13:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:31,338 INFO L93 Difference]: Finished difference Result 38154 states and 59918 transitions. [2018-11-07 07:13:31,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:13:31,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2018-11-07 07:13:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:31,498 INFO L225 Difference]: With dead ends: 38154 [2018-11-07 07:13:31,499 INFO L226 Difference]: Without dead ends: 27532 [2018-11-07 07:13:31,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:13:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27532 states. [2018-11-07 07:13:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27532 to 27014. [2018-11-07 07:13:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27014 states. [2018-11-07 07:13:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27014 states to 27014 states and 37291 transitions. [2018-11-07 07:13:32,339 INFO L78 Accepts]: Start accepts. Automaton has 27014 states and 37291 transitions. Word has length 275 [2018-11-07 07:13:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:32,340 INFO L480 AbstractCegarLoop]: Abstraction has 27014 states and 37291 transitions. [2018-11-07 07:13:32,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:13:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27014 states and 37291 transitions. [2018-11-07 07:13:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-07 07:13:32,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:32,400 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 07:13:32,401 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:32,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:32,401 INFO L82 PathProgramCache]: Analyzing trace with hash -988067075, now seen corresponding path program 1 times [2018-11-07 07:13:32,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:32,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:32,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:32,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:32,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:33,294 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 07:13:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:33,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:33,554 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:33,555 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-11-07 07:13:33,555 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], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:33,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:33,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:34,879 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:34,879 INFO L272 AbstractInterpreter]: Visited 194 different actions 581 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:34,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:34,886 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:34,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:34,886 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 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 [2018-11-07 07:13:34,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:34,897 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:35,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-07 07:13:35,349 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-07 07:13:36,000 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:13:36,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 07:13:36,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:13:36,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:13:36,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:13:36,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:36,002 INFO L87 Difference]: Start difference. First operand 27014 states and 37291 transitions. Second operand 3 states. [2018-11-07 07:13:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:37,523 INFO L93 Difference]: Finished difference Result 49659 states and 68717 transitions. [2018-11-07 07:13:37,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:13:37,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-11-07 07:13:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:37,630 INFO L225 Difference]: With dead ends: 49659 [2018-11-07 07:13:37,630 INFO L226 Difference]: Without dead ends: 27019 [2018-11-07 07:13:37,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 588 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27019 states. [2018-11-07 07:13:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27019 to 26940. [2018-11-07 07:13:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26940 states. [2018-11-07 07:13:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26940 states to 26940 states and 35587 transitions. [2018-11-07 07:13:38,289 INFO L78 Accepts]: Start accepts. Automaton has 26940 states and 35587 transitions. Word has length 295 [2018-11-07 07:13:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:38,290 INFO L480 AbstractCegarLoop]: Abstraction has 26940 states and 35587 transitions. [2018-11-07 07:13:38,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:13:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 26940 states and 35587 transitions. [2018-11-07 07:13:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 07:13:38,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:38,331 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:38,331 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:38,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1002085534, now seen corresponding path program 1 times [2018-11-07 07:13:38,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:38,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:38,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:38,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:38,333 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:38,966 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 07:13:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:39,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:39,139 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:39,139 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 07:13:39,140 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [350], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:39,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:39,145 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:40,227 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:40,228 INFO L272 AbstractInterpreter]: Visited 194 different actions 578 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:40,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:40,238 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:40,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:40,238 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 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 [2018-11-07 07:13:40,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:40,250 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:40,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 07:13:40,552 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 07:13:40,746 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:13:40,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 07:13:40,746 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:13:40,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:13:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:13:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:40,747 INFO L87 Difference]: Start difference. First operand 26940 states and 35587 transitions. Second operand 3 states. [2018-11-07 07:13:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:42,381 INFO L93 Difference]: Finished difference Result 78043 states and 104584 transitions. [2018-11-07 07:13:42,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:13:42,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 296 [2018-11-07 07:13:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:42,583 INFO L225 Difference]: With dead ends: 78043 [2018-11-07 07:13:42,583 INFO L226 Difference]: Without dead ends: 51530 [2018-11-07 07:13:42,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 590 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51530 states. [2018-11-07 07:13:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51530 to 51519. [2018-11-07 07:13:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51519 states. [2018-11-07 07:13:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51519 states to 51519 states and 66846 transitions. [2018-11-07 07:13:43,600 INFO L78 Accepts]: Start accepts. Automaton has 51519 states and 66846 transitions. Word has length 296 [2018-11-07 07:13:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:43,601 INFO L480 AbstractCegarLoop]: Abstraction has 51519 states and 66846 transitions. [2018-11-07 07:13:43,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:13:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 51519 states and 66846 transitions. [2018-11-07 07:13:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-11-07 07:13:43,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:43,673 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:43,674 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:43,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1140123016, now seen corresponding path program 1 times [2018-11-07 07:13:43,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:43,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:43,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:13:44,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:44,377 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:44,377 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 356 with the following transitions: [2018-11-07 07:13:44,382 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], [261], [265], [268], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:44,388 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:44,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:45,479 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:45,479 INFO L272 AbstractInterpreter]: Visited 193 different actions 572 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:13:45,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:45,485 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:45,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:45,485 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 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 [2018-11-07 07:13:45,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:45,496 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:45,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:13:45,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:46,214 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-11-07 07:13:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:13:46,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:46,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 07:13:46,322 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:46,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:13:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:13:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:13:46,324 INFO L87 Difference]: Start difference. First operand 51519 states and 66846 transitions. Second operand 7 states. [2018-11-07 07:13:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:49,346 INFO L93 Difference]: Finished difference Result 112236 states and 145250 transitions. [2018-11-07 07:13:49,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:13:49,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2018-11-07 07:13:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:49,532 INFO L225 Difference]: With dead ends: 112236 [2018-11-07 07:13:49,532 INFO L226 Difference]: Without dead ends: 61144 [2018-11-07 07:13:49,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 709 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:13:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61144 states. [2018-11-07 07:13:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61144 to 60948. [2018-11-07 07:13:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60948 states. [2018-11-07 07:13:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60948 states to 60948 states and 75119 transitions. [2018-11-07 07:13:50,678 INFO L78 Accepts]: Start accepts. Automaton has 60948 states and 75119 transitions. Word has length 355 [2018-11-07 07:13:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:50,679 INFO L480 AbstractCegarLoop]: Abstraction has 60948 states and 75119 transitions. [2018-11-07 07:13:50,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:13:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 60948 states and 75119 transitions. [2018-11-07 07:13:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-11-07 07:13:50,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:50,757 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:50,757 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:50,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1827684181, now seen corresponding path program 1 times [2018-11-07 07:13:50,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:50,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:50,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:50,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:50,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 274 proven. 68 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-11-07 07:13:51,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:51,243 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:51,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 422 with the following transitions: [2018-11-07 07:13:51,244 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [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], [240], [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], [519], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:51,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:51,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:52,157 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:52,157 INFO L272 AbstractInterpreter]: Visited 196 different actions 584 times. Merged at 8 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 88 variables. [2018-11-07 07:13:52,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:52,162 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:52,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:52,163 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:13:52,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:52,172 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:52,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-11-07 07:13:52,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 291 proven. 67 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 07:13:53,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:53,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2018-11-07 07:13:53,169 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:53,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 07:13:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 07:13:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-11-07 07:13:53,171 INFO L87 Difference]: Start difference. First operand 60948 states and 75119 transitions. Second operand 14 states. [2018-11-07 07:14:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:05,374 INFO L93 Difference]: Finished difference Result 284580 states and 372293 transitions. [2018-11-07 07:14:05,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-11-07 07:14:05,375 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 421 [2018-11-07 07:14:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:06,507 INFO L225 Difference]: With dead ends: 284580 [2018-11-07 07:14:06,507 INFO L226 Difference]: Without dead ends: 224059 [2018-11-07 07:14:06,757 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 903 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1411, Invalid=6071, Unknown=0, NotChecked=0, Total=7482 [2018-11-07 07:14:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224059 states. [2018-11-07 07:14:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224059 to 210042. [2018-11-07 07:14:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210042 states. [2018-11-07 07:14:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210042 states to 210042 states and 250302 transitions. [2018-11-07 07:14:15,287 INFO L78 Accepts]: Start accepts. Automaton has 210042 states and 250302 transitions. Word has length 421 [2018-11-07 07:14:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:15,288 INFO L480 AbstractCegarLoop]: Abstraction has 210042 states and 250302 transitions. [2018-11-07 07:14:15,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 07:14:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 210042 states and 250302 transitions. [2018-11-07 07:14:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-07 07:14:15,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:15,447 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:14:15,447 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:15,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash -758213472, now seen corresponding path program 1 times [2018-11-07 07:14:15,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:15,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:15,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:15,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:15,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 289 proven. 75 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-07 07:14:16,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:16,098 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:14:16,098 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-11-07 07:14:16,099 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [519], [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], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:14:16,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:14:16,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:14:17,231 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:14:17,232 INFO L272 AbstractInterpreter]: Visited 196 different actions 584 times. Merged at 8 different actions 20 times. Never widened. Found 6 fixpoints after 5 different actions. Largest state had 88 variables. [2018-11-07 07:14:17,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:17,238 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:14:17,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:17,238 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:14:17,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:17,248 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:14:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:17,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:14:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-11-07 07:14:17,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:14:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 308 proven. 11 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-11-07 07:14:18,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:14:18,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:14:18,565 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:14:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:14:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:14:18,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:14:18,567 INFO L87 Difference]: Start difference. First operand 210042 states and 250302 transitions. Second operand 9 states. [2018-11-07 07:14:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:30,171 INFO L93 Difference]: Finished difference Result 425375 states and 526551 transitions. [2018-11-07 07:14:30,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 07:14:30,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 439 [2018-11-07 07:14:30,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:30,172 INFO L225 Difference]: With dead ends: 425375 [2018-11-07 07:14:30,172 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 07:14:30,638 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 897 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 07:14:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 07:14:30,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 07:14:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 07:14:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 07:14:30,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 439 [2018-11-07 07:14:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:30,642 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 07:14:30,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:14:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 07:14:30,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 07:14:30,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 07:14:35,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,486 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,509 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,915 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:35,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 07:14:36,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-11-07 07:14:36,524 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-07 07:14:36,526 INFO L168 Benchmark]: Toolchain (without parser) took 215008.60 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -901.6 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 07:14:36,527 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:14:36,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1130.35 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 07:14:36,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 239.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-11-07 07:14:36,529 INFO L168 Benchmark]: Boogie Preprocessor took 153.31 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 07:14:36,533 INFO L168 Benchmark]: RCFGBuilder took 5541.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-11-07 07:14:36,534 INFO L168 Benchmark]: TraceAbstraction took 207938.88 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -386.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 07:14:36,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1130.35 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 239.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.31 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 5541.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207938.88 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -386.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1578]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 3975. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown