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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 10:03:17,666 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 10:03:17,668 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 10:03:17,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 10:03:17,682 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 10:03:17,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 10:03:17,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 10:03:17,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 10:03:17,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 10:03:17,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 10:03:17,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 10:03:17,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 10:03:17,702 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 10:03:17,707 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 10:03:17,712 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 10:03:17,713 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 10:03:17,714 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 10:03:17,716 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 10:03:17,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 10:03:17,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 10:03:17,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 10:03:17,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 10:03:17,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 10:03:17,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 10:03:17,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 10:03:17,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 10:03:17,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 10:03:17,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 10:03:17,742 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 10:03:17,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 10:03:17,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 10:03:17,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 10:03:17,745 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 10:03:17,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 10:03:17,747 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 10:03:17,748 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 10:03:17,749 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-19 10:03:17,766 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 10:03:17,766 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 10:03:17,767 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 10:03:17,767 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 10:03:17,767 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 10:03:17,768 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 10:03:17,768 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 10:03:17,768 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 10:03:17,768 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 10:03:17,768 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 10:03:17,769 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 10:03:17,769 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 10:03:17,769 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 10:03:17,770 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 10:03:17,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 10:03:17,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 10:03:17,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 10:03:17,771 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 10:03:17,771 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 10:03:17,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 10:03:17,771 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 10:03:17,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 10:03:17,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 10:03:17,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 10:03:17,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 10:03:17,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 10:03:17,772 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 10:03:17,773 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 10:03:17,774 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 10:03:17,774 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 10:03:17,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 10:03:17,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 10:03:17,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 10:03:17,845 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 10:03:17,846 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 10:03:17,846 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-09-19 10:03:18,225 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28369ce65/484c905ac4314707b5c3fbf3196c56d4/FLAG107a02aa5 [2018-09-19 10:03:18,539 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 10:03:18,540 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-09-19 10:03:18,555 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28369ce65/484c905ac4314707b5c3fbf3196c56d4/FLAG107a02aa5 [2018-09-19 10:03:18,570 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28369ce65/484c905ac4314707b5c3fbf3196c56d4 [2018-09-19 10:03:18,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 10:03:18,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 10:03:18,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 10:03:18,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 10:03:18,597 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 10:03:18,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 10:03:18" (1/1) ... [2018-09-19 10:03:18,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3139b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:18, skipping insertion in model container [2018-09-19 10:03:18,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 10:03:18" (1/1) ... [2018-09-19 10:03:18,612 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 10:03:19,056 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 10:03:19,085 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 10:03:19,272 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 10:03:19,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19 WrapperNode [2018-09-19 10:03:19,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 10:03:19,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 10:03:19,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 10:03:19,317 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 10:03:19,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 10:03:19,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 10:03:19,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 10:03:19,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 10:03:19,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (1/1) ... [2018-09-19 10:03:19,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 10:03:19,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 10:03:19,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 10:03:19,736 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 10:03:19,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (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 [2018-09-19 10:03:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 10:03:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 10:03:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 10:03:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 10:03:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 10:03:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 10:03:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 10:03:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 10:03:23,405 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 10:03:23,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 10:03:23 BoogieIcfgContainer [2018-09-19 10:03:23,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 10:03:23,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 10:03:23,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 10:03:23,412 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 10:03:23,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 10:03:18" (1/3) ... [2018-09-19 10:03:23,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189a2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 10:03:23, skipping insertion in model container [2018-09-19 10:03:23,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:03:19" (2/3) ... [2018-09-19 10:03:23,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189a2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 10:03:23, skipping insertion in model container [2018-09-19 10:03:23,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 10:03:23" (3/3) ... [2018-09-19 10:03:23,418 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label38_true-unreach-call.c [2018-09-19 10:03:23,430 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 10:03:23,441 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 10:03:23,500 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 10:03:23,501 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 10:03:23,501 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 10:03:23,501 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 10:03:23,501 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 10:03:23,502 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 10:03:23,502 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 10:03:23,502 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 10:03:23,503 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 10:03:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-19 10:03:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-19 10:03:23,552 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:03:23,554 INFO L376 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] [2018-09-19 10:03:23,555 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:03:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1705771087, now seen corresponding path program 1 times [2018-09-19 10:03:23,564 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:03:23,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-09-19 10:03:23,569 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [796], [800], [806], [810], [817], [818], [819], [821] [2018-09-19 10:03:23,632 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:03:23,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:03:24,760 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:03:24,762 INFO L272 AbstractInterpreter]: Visited 38 different actions 38 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-19 10:03:24,810 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:03:25,375 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 75.15% of their original sizes. [2018-09-19 10:03:25,376 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:03:25,683 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:03:25,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:03:25,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 10:03:25,686 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:03:25,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 10:03:25,702 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 10:03:25,703 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 10:03:25,706 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 6 states. [2018-09-19 10:03:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:03:30,207 INFO L93 Difference]: Finished difference Result 576 states and 995 transitions. [2018-09-19 10:03:30,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 10:03:30,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-09-19 10:03:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:03:30,230 INFO L225 Difference]: With dead ends: 576 [2018-09-19 10:03:30,230 INFO L226 Difference]: Without dead ends: 358 [2018-09-19 10:03:30,237 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 10:03:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-19 10:03:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-09-19 10:03:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-19 10:03:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2018-09-19 10:03:30,318 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 39 [2018-09-19 10:03:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:03:30,319 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2018-09-19 10:03:30,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 10:03:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2018-09-19 10:03:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-19 10:03:30,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:03:30,325 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:03:30,326 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:03:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -518419837, now seen corresponding path program 1 times [2018-09-19 10:03:30,326 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:03:30,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-09-19 10:03:30,327 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:03:30,337 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:03:30,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:03:31,741 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:03:34,565 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:03:34,566 INFO L272 AbstractInterpreter]: Visited 78 different actions 221 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:03:34,576 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:03:35,366 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 73.64% of their original sizes. [2018-09-19 10:03:35,367 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:03:35,936 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:03:35,936 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:03:35,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:03:35,937 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:03:35,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:03:35,938 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:03:35,938 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:03:35,939 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand 10 states. [2018-09-19 10:03:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:03:41,906 INFO L93 Difference]: Finished difference Result 717 states and 1132 transitions. [2018-09-19 10:03:41,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 10:03:41,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2018-09-19 10:03:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:03:41,918 INFO L225 Difference]: With dead ends: 717 [2018-09-19 10:03:41,919 INFO L226 Difference]: Without dead ends: 511 [2018-09-19 10:03:41,922 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 10:03:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-09-19 10:03:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 505. [2018-09-19 10:03:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-09-19 10:03:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 669 transitions. [2018-09-19 10:03:41,963 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 669 transitions. Word has length 110 [2018-09-19 10:03:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:03:41,964 INFO L480 AbstractCegarLoop]: Abstraction has 505 states and 669 transitions. [2018-09-19 10:03:41,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:03:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 669 transitions. [2018-09-19 10:03:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-19 10:03:41,970 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:03:41,971 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:03:41,971 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:03:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2078110268, now seen corresponding path program 1 times [2018-09-19 10:03:41,971 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:03:41,972 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2018-09-19 10:03:41,972 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:03:41,977 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:03:41,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:03:45,785 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:03:47,478 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:03:47,478 INFO L272 AbstractInterpreter]: Visited 87 different actions 248 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:03:47,480 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:03:48,426 INFO L232 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 73.57% of their original sizes. [2018-09-19 10:03:48,426 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:03:49,278 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:03:49,278 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:03:49,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 10:03:49,279 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:03:49,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 10:03:49,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 10:03:49,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 10:03:49,280 INFO L87 Difference]: Start difference. First operand 505 states and 669 transitions. Second operand 13 states. [2018-09-19 10:03:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:03:58,459 INFO L93 Difference]: Finished difference Result 1333 states and 2096 transitions. [2018-09-19 10:03:58,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-19 10:03:58,461 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 119 [2018-09-19 10:03:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:03:58,469 INFO L225 Difference]: With dead ends: 1333 [2018-09-19 10:03:58,469 INFO L226 Difference]: Without dead ends: 978 [2018-09-19 10:03:58,472 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2018-09-19 10:03:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2018-09-19 10:03:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 762. [2018-09-19 10:03:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-09-19 10:03:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 953 transitions. [2018-09-19 10:03:58,524 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 953 transitions. Word has length 119 [2018-09-19 10:03:58,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:03:58,525 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 953 transitions. [2018-09-19 10:03:58,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 10:03:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 953 transitions. [2018-09-19 10:03:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-19 10:03:58,530 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:03:58,531 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:03:58,531 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:03:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash -812786876, now seen corresponding path program 1 times [2018-09-19 10:03:58,531 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:03:58,532 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-09-19 10:03:58,532 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:03:58,538 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:03:58,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:04:01,363 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:04:07,772 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:04:07,773 INFO L272 AbstractInterpreter]: Visited 123 different actions 356 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:04:07,782 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:04:08,541 INFO L232 lantSequenceWeakener]: Weakened 153 states. On average, predicates are now at 73.37% of their original sizes. [2018-09-19 10:04:08,541 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:04:08,909 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:04:08,909 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:04:08,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 10:04:08,909 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:04:08,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 10:04:08,910 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 10:04:08,911 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-19 10:04:08,911 INFO L87 Difference]: Start difference. First operand 762 states and 953 transitions. Second operand 12 states. [2018-09-19 10:04:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:04:14,868 INFO L93 Difference]: Finished difference Result 1677 states and 2220 transitions. [2018-09-19 10:04:14,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:04:14,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2018-09-19 10:04:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:04:14,876 INFO L225 Difference]: With dead ends: 1677 [2018-09-19 10:04:14,876 INFO L226 Difference]: Without dead ends: 1067 [2018-09-19 10:04:14,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-09-19 10:04:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2018-09-19 10:04:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1056. [2018-09-19 10:04:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2018-09-19 10:04:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1287 transitions. [2018-09-19 10:04:14,933 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1287 transitions. Word has length 155 [2018-09-19 10:04:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:04:14,933 INFO L480 AbstractCegarLoop]: Abstraction has 1056 states and 1287 transitions. [2018-09-19 10:04:14,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 10:04:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1287 transitions. [2018-09-19 10:04:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-19 10:04:14,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:04:14,943 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:04:14,944 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:04:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash -894996733, now seen corresponding path program 1 times [2018-09-19 10:04:14,944 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:04:14,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-09-19 10:04:14,945 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:04:14,956 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:04:14,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:04:24,409 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:04:24,409 INFO L272 AbstractInterpreter]: Visited 142 different actions 413 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:04:24,419 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:04:25,213 INFO L232 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 73.3% of their original sizes. [2018-09-19 10:04:25,213 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:04:25,578 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:04:25,578 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:04:25,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 10:04:25,578 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:04:25,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 10:04:25,579 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 10:04:25,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-19 10:04:25,580 INFO L87 Difference]: Start difference. First operand 1056 states and 1287 transitions. Second operand 12 states. [2018-09-19 10:04:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:04:32,442 INFO L93 Difference]: Finished difference Result 2268 states and 2899 transitions. [2018-09-19 10:04:32,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 10:04:32,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2018-09-19 10:04:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:04:32,450 INFO L225 Difference]: With dead ends: 2268 [2018-09-19 10:04:32,450 INFO L226 Difference]: Without dead ends: 1364 [2018-09-19 10:04:32,453 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-09-19 10:04:32,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2018-09-19 10:04:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1352. [2018-09-19 10:04:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-09-19 10:04:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1615 transitions. [2018-09-19 10:04:32,501 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1615 transitions. Word has length 174 [2018-09-19 10:04:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:04:32,501 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 1615 transitions. [2018-09-19 10:04:32,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 10:04:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1615 transitions. [2018-09-19 10:04:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-19 10:04:32,505 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:04:32,505 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:04:32,505 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:04:32,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1553969338, now seen corresponding path program 1 times [2018-09-19 10:04:32,506 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:04:32,506 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-09-19 10:04:32,506 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:04:32,509 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:04:32,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:04:33,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:04:38,422 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:04:38,422 INFO L272 AbstractInterpreter]: Visited 84 different actions 323 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:04:38,431 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:04:39,294 INFO L232 lantSequenceWeakener]: Weakened 184 states. On average, predicates are now at 73.31% of their original sizes. [2018-09-19 10:04:39,295 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:04:40,151 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:04:40,152 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:04:40,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:04:40,152 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:04:40,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:04:40,153 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:04:40,153 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:04:40,153 INFO L87 Difference]: Start difference. First operand 1352 states and 1615 transitions. Second operand 10 states. [2018-09-19 10:04:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:04:45,867 INFO L93 Difference]: Finished difference Result 2719 states and 3388 transitions. [2018-09-19 10:04:45,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:04:45,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2018-09-19 10:04:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:04:45,878 INFO L225 Difference]: With dead ends: 2719 [2018-09-19 10:04:45,878 INFO L226 Difference]: Without dead ends: 1521 [2018-09-19 10:04:45,882 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:04:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2018-09-19 10:04:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1503. [2018-09-19 10:04:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2018-09-19 10:04:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1792 transitions. [2018-09-19 10:04:45,950 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1792 transitions. Word has length 186 [2018-09-19 10:04:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:04:45,951 INFO L480 AbstractCegarLoop]: Abstraction has 1503 states and 1792 transitions. [2018-09-19 10:04:45,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:04:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1792 transitions. [2018-09-19 10:04:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-19 10:04:45,955 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:04:45,956 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:04:45,956 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:04:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash -512851926, now seen corresponding path program 1 times [2018-09-19 10:04:45,957 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:04:45,957 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-09-19 10:04:45,957 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:04:45,963 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:04:45,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:04:47,220 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:04:52,850 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:04:52,851 INFO L272 AbstractInterpreter]: Visited 86 different actions 333 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:04:52,857 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:04:53,634 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 73.31% of their original sizes. [2018-09-19 10:04:53,634 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:04:53,898 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:04:53,899 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:04:53,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:04:53,899 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:04:53,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:04:53,900 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:04:53,900 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:04:53,900 INFO L87 Difference]: Start difference. First operand 1503 states and 1792 transitions. Second operand 10 states. [2018-09-19 10:04:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:04:58,228 INFO L93 Difference]: Finished difference Result 3020 states and 3751 transitions. [2018-09-19 10:04:58,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:04:58,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2018-09-19 10:04:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:04:58,241 INFO L225 Difference]: With dead ends: 3020 [2018-09-19 10:04:58,242 INFO L226 Difference]: Without dead ends: 1671 [2018-09-19 10:04:58,245 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:04:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2018-09-19 10:04:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1654. [2018-09-19 10:04:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2018-09-19 10:04:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 1988 transitions. [2018-09-19 10:04:58,304 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 1988 transitions. Word has length 188 [2018-09-19 10:04:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:04:58,305 INFO L480 AbstractCegarLoop]: Abstraction has 1654 states and 1988 transitions. [2018-09-19 10:04:58,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:04:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 1988 transitions. [2018-09-19 10:04:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-19 10:04:58,309 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:04:58,309 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:04:58,309 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:04:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1565878770, now seen corresponding path program 1 times [2018-09-19 10:04:58,310 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:04:58,310 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-09-19 10:04:58,310 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:04:58,313 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:04:58,313 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:04:59,505 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:05:04,951 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:05:04,951 INFO L272 AbstractInterpreter]: Visited 90 different actions 349 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:05:04,959 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:05:05,692 INFO L232 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 73.3% of their original sizes. [2018-09-19 10:05:05,692 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:05:05,960 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:05:05,961 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:05:05,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:05:05,961 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:05:05,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:05:05,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:05:05,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:05:05,962 INFO L87 Difference]: Start difference. First operand 1654 states and 1988 transitions. Second operand 10 states. [2018-09-19 10:05:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:05:11,089 INFO L93 Difference]: Finished difference Result 3477 states and 4328 transitions. [2018-09-19 10:05:11,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:05:11,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 192 [2018-09-19 10:05:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:05:11,097 INFO L225 Difference]: With dead ends: 3477 [2018-09-19 10:05:11,098 INFO L226 Difference]: Without dead ends: 1977 [2018-09-19 10:05:11,102 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:05:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2018-09-19 10:05:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1954. [2018-09-19 10:05:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-09-19 10:05:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2362 transitions. [2018-09-19 10:05:11,174 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2362 transitions. Word has length 192 [2018-09-19 10:05:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:05:11,175 INFO L480 AbstractCegarLoop]: Abstraction has 1954 states and 2362 transitions. [2018-09-19 10:05:11,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:05:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2362 transitions. [2018-09-19 10:05:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-19 10:05:11,179 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:05:11,179 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:05:11,180 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:05:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash -752870242, now seen corresponding path program 1 times [2018-09-19 10:05:11,180 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:05:11,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-09-19 10:05:11,181 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:05:11,183 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:05:11,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:05:12,567 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:05:21,971 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:05:21,971 INFO L272 AbstractInterpreter]: Visited 96 different actions 373 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:05:21,981 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:05:22,849 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 73.28% of their original sizes. [2018-09-19 10:05:22,849 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:05:23,172 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:05:23,172 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:05:23,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:05:23,173 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:05:23,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:05:23,173 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:05:23,173 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:05:23,174 INFO L87 Difference]: Start difference. First operand 1954 states and 2362 transitions. Second operand 10 states. [2018-09-19 10:05:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:05:30,380 INFO L93 Difference]: Finished difference Result 3932 states and 4909 transitions. [2018-09-19 10:05:30,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:05:30,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2018-09-19 10:05:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:05:30,392 INFO L225 Difference]: With dead ends: 3932 [2018-09-19 10:05:30,393 INFO L226 Difference]: Without dead ends: 2132 [2018-09-19 10:05:30,399 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:05:30,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2018-09-19 10:05:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2109. [2018-09-19 10:05:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2018-09-19 10:05:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2577 transitions. [2018-09-19 10:05:30,494 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2577 transitions. Word has length 198 [2018-09-19 10:05:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:05:30,498 INFO L480 AbstractCegarLoop]: Abstraction has 2109 states and 2577 transitions. [2018-09-19 10:05:30,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:05:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2577 transitions. [2018-09-19 10:05:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-19 10:05:30,503 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:05:30,504 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:05:30,504 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:05:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1042015547, now seen corresponding path program 1 times [2018-09-19 10:05:30,504 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:05:30,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-09-19 10:05:30,505 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:05:30,508 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:05:30,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:05:31,831 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:05:41,263 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:05:41,263 INFO L272 AbstractInterpreter]: Visited 105 different actions 407 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:05:41,272 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:05:42,129 INFO L232 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 73.25% of their original sizes. [2018-09-19 10:05:42,129 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:05:42,453 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:05:42,453 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:05:42,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 10:05:42,453 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:05:42,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 10:05:42,454 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 10:05:42,454 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 10:05:42,454 INFO L87 Difference]: Start difference. First operand 2109 states and 2577 transitions. Second operand 11 states. [2018-09-19 10:05:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:05:50,529 INFO L93 Difference]: Finished difference Result 4320 states and 5463 transitions. [2018-09-19 10:05:50,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 10:05:50,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 207 [2018-09-19 10:05:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:05:50,540 INFO L225 Difference]: With dead ends: 4320 [2018-09-19 10:05:50,541 INFO L226 Difference]: Without dead ends: 2365 [2018-09-19 10:05:50,546 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-09-19 10:05:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2018-09-19 10:05:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2262. [2018-09-19 10:05:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2018-09-19 10:05:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2792 transitions. [2018-09-19 10:05:50,625 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2792 transitions. Word has length 207 [2018-09-19 10:05:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:05:50,626 INFO L480 AbstractCegarLoop]: Abstraction has 2262 states and 2792 transitions. [2018-09-19 10:05:50,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 10:05:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2792 transitions. [2018-09-19 10:05:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-19 10:05:50,630 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:05:50,631 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:05:50,631 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:05:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1696540239, now seen corresponding path program 1 times [2018-09-19 10:05:50,632 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:05:50,632 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-09-19 10:05:50,632 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [626], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:05:50,635 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:05:50,635 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:05:52,016 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:05:59,474 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:05:59,474 INFO L272 AbstractInterpreter]: Visited 111 different actions 433 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:05:59,480 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:06:00,380 INFO L232 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 73.24% of their original sizes. [2018-09-19 10:06:00,380 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:06:00,758 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:06:00,758 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:06:00,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 10:06:00,758 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:06:00,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 10:06:00,759 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 10:06:00,759 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 10:06:00,759 INFO L87 Difference]: Start difference. First operand 2262 states and 2792 transitions. Second operand 11 states. [2018-09-19 10:06:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:06:08,788 INFO L93 Difference]: Finished difference Result 4808 states and 6139 transitions. [2018-09-19 10:06:08,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 10:06:08,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 213 [2018-09-19 10:06:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:06:08,801 INFO L225 Difference]: With dead ends: 4808 [2018-09-19 10:06:08,801 INFO L226 Difference]: Without dead ends: 2700 [2018-09-19 10:06:08,807 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-09-19 10:06:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2018-09-19 10:06:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2670. [2018-09-19 10:06:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2018-09-19 10:06:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3328 transitions. [2018-09-19 10:06:08,894 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3328 transitions. Word has length 213 [2018-09-19 10:06:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:06:08,895 INFO L480 AbstractCegarLoop]: Abstraction has 2670 states and 3328 transitions. [2018-09-19 10:06:08,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 10:06:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3328 transitions. [2018-09-19 10:06:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-19 10:06:08,899 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:06:08,900 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:06:08,900 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:06:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1973702250, now seen corresponding path program 1 times [2018-09-19 10:06:08,900 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:06:08,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-09-19 10:06:08,901 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:06:08,904 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:06:08,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:06:10,130 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:06:18,770 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:06:18,770 INFO L272 AbstractInterpreter]: Visited 118 different actions 459 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:06:18,781 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:06:19,651 INFO L232 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 73.22% of their original sizes. [2018-09-19 10:06:19,651 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:06:20,011 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:06:20,012 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:06:20,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 10:06:20,012 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:06:20,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 10:06:20,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 10:06:20,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 10:06:20,013 INFO L87 Difference]: Start difference. First operand 2670 states and 3328 transitions. Second operand 11 states. [2018-09-19 10:06:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:06:27,278 INFO L93 Difference]: Finished difference Result 5752 states and 7377 transitions. [2018-09-19 10:06:27,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 10:06:27,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 220 [2018-09-19 10:06:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:06:27,291 INFO L225 Difference]: With dead ends: 5752 [2018-09-19 10:06:27,291 INFO L226 Difference]: Without dead ends: 3236 [2018-09-19 10:06:27,296 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-09-19 10:06:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2018-09-19 10:06:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3129. [2018-09-19 10:06:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2018-09-19 10:06:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 3930 transitions. [2018-09-19 10:06:27,397 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 3930 transitions. Word has length 220 [2018-09-19 10:06:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:06:27,398 INFO L480 AbstractCegarLoop]: Abstraction has 3129 states and 3930 transitions. [2018-09-19 10:06:27,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 10:06:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 3930 transitions. [2018-09-19 10:06:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-19 10:06:27,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:06:27,402 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:06:27,402 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:06:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2009516059, now seen corresponding path program 1 times [2018-09-19 10:06:27,402 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:06:27,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-09-19 10:06:27,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:06:27,406 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:06:27,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:06:28,757 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:06:38,034 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:06:38,035 INFO L272 AbstractInterpreter]: Visited 121 different actions 471 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:06:38,039 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:06:38,977 INFO L232 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 73.22% of their original sizes. [2018-09-19 10:06:38,977 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:06:39,443 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:06:39,443 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:06:39,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 10:06:39,443 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:06:39,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 10:06:39,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 10:06:39,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 10:06:39,445 INFO L87 Difference]: Start difference. First operand 3129 states and 3930 transitions. Second operand 13 states. [2018-09-19 10:06:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:06:50,476 INFO L93 Difference]: Finished difference Result 6701 states and 8709 transitions. [2018-09-19 10:06:50,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 10:06:50,487 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 223 [2018-09-19 10:06:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:06:50,500 INFO L225 Difference]: With dead ends: 6701 [2018-09-19 10:06:50,501 INFO L226 Difference]: Without dead ends: 3726 [2018-09-19 10:06:50,508 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 235 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-09-19 10:06:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2018-09-19 10:06:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3529. [2018-09-19 10:06:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3529 states. [2018-09-19 10:06:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4443 transitions. [2018-09-19 10:06:50,634 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4443 transitions. Word has length 223 [2018-09-19 10:06:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:06:50,635 INFO L480 AbstractCegarLoop]: Abstraction has 3529 states and 4443 transitions. [2018-09-19 10:06:50,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 10:06:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4443 transitions. [2018-09-19 10:06:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-19 10:06:50,640 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:06:50,640 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:06:50,640 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:06:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 689483636, now seen corresponding path program 1 times [2018-09-19 10:06:50,641 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:06:50,641 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-09-19 10:06:50,641 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:06:50,647 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:06:50,650 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:06:53,385 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:07:04,373 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:07:04,373 INFO L272 AbstractInterpreter]: Visited 124 different actions 603 times. Merged at 7 different actions 27 times. Never widened. Found 5 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 10:07:04,380 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:07:05,309 INFO L232 lantSequenceWeakener]: Weakened 226 states. On average, predicates are now at 73.21% of their original sizes. [2018-09-19 10:07:05,310 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:07:05,578 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:07:05,578 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:07:05,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:07:05,578 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:07:05,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:07:05,579 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:07:05,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:07:05,580 INFO L87 Difference]: Start difference. First operand 3529 states and 4443 transitions. Second operand 10 states. [2018-09-19 10:07:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:07:12,744 INFO L93 Difference]: Finished difference Result 7079 states and 9092 transitions. [2018-09-19 10:07:12,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 10:07:12,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 228 [2018-09-19 10:07:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:07:12,759 INFO L225 Difference]: With dead ends: 7079 [2018-09-19 10:07:12,759 INFO L226 Difference]: Without dead ends: 3704 [2018-09-19 10:07:12,767 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:07:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2018-09-19 10:07:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3677. [2018-09-19 10:07:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2018-09-19 10:07:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4642 transitions. [2018-09-19 10:07:12,893 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4642 transitions. Word has length 228 [2018-09-19 10:07:12,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:07:12,894 INFO L480 AbstractCegarLoop]: Abstraction has 3677 states and 4642 transitions. [2018-09-19 10:07:12,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:07:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4642 transitions. [2018-09-19 10:07:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-19 10:07:12,899 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:07:12,899 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:07:12,899 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:07:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1626090434, now seen corresponding path program 1 times [2018-09-19 10:07:12,900 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:07:12,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-09-19 10:07:12,901 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-19 10:07:12,904 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:07:12,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:07:14,224 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:07:27,440 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:07:27,441 INFO L272 AbstractInterpreter]: Visited 130 different actions 634 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:07:27,450 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:07:28,476 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 73.2% of their original sizes. [2018-09-19 10:07:28,476 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:07:28,961 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:07:28,961 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:07:28,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 10:07:28,962 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:07:28,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 10:07:28,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 10:07:28,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 10:07:28,962 INFO L87 Difference]: Start difference. First operand 3677 states and 4642 transitions. Second operand 13 states. Received shutdown request... [2018-09-19 10:07:38,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 10:07:38,587 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 10:07:38,594 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 10:07:38,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 10:07:38 BoogieIcfgContainer [2018-09-19 10:07:38,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 10:07:38,595 INFO L168 Benchmark]: Toolchain (without parser) took 260010.32 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,597 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 10:07:38,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,599 INFO L168 Benchmark]: Boogie Preprocessor took 301.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.1 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,600 INFO L168 Benchmark]: RCFGBuilder took 3671.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.1 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,600 INFO L168 Benchmark]: TraceAbstraction took 255185.69 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -688.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-19 10:07:38,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 117.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 301.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.1 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3671.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.1 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255185.69 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -688.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (3677states) and FLOYD_HOARE automaton (currently 20 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (1801 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 255.1s OverallTime, 15 OverallIterations, 3 TraceHistogramMax, 106.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2785 SDtfs, 11553 SDslu, 5200 SDs, 0 SdLazy, 28750 SolverSat, 2617 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 92.1s Time, PredicateUnifierStatistics: 30 DeclaredPredicates, 2801 GetRequests, 2537 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3677occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 128.4s AbstIntTime, 15 AbstIntIterations, 15 AbstIntStrong, 0.9939434170989725 AbsIntWeakeningRatio, 0.13263394529786438 AbsIntAvgWeakeningVarsNumRemoved, 875.2765080554515 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 792 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label38_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_10-07-38-625.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label38_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_10-07-38-625.csv Completed graceful shutdown