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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:10:40,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:10:40,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:10:40,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:10:40,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:10:40,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:10:40,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:10:40,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:10:40,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:10:40,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:10:40,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:10:40,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:10:40,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:10:40,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:10:40,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:10:40,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:10:40,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:10:40,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:10:40,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:10:40,801 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:10:40,802 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:10:40,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:10:40,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:10:40,806 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:10:40,807 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:10:40,808 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:10:40,809 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:10:40,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:10:40,811 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:10:40,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:10:40,813 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:10:40,813 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:10:40,814 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:10:40,814 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:10:40,815 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:10:40,815 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:10:40,816 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 14:10:40,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:10:40,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:10:40,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:10:40,846 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:10:40,846 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:10:40,847 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:10:40,847 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:10:40,847 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:10:40,847 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:10:40,847 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:10:40,847 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:10:40,848 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:10:40,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:10:40,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:10:40,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:10:40,849 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:10:40,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:10:40,850 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:10:40,850 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:10:40,851 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:10:40,851 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:10:40,851 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:10:40,851 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:10:40,851 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:10:40,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:10:40,852 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:10:40,852 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:10:40,852 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:10:40,853 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:10:40,853 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:10:40,853 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:10:40,853 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:10:40,854 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:10:40,854 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:10:40,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:10:40,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:10:40,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:10:40,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:10:40,935 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:10:40,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06_true-unreach-call.c [2018-09-15 14:10:41,294 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872c5f270/45e41e1703f943769567e327eca67db3/FLAG1bf2b28a3 [2018-09-15 14:10:41,566 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:10:41,567 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06_true-unreach-call.c [2018-09-15 14:10:41,585 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872c5f270/45e41e1703f943769567e327eca67db3/FLAG1bf2b28a3 [2018-09-15 14:10:41,610 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872c5f270/45e41e1703f943769567e327eca67db3 [2018-09-15 14:10:41,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:10:41,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:10:41,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:10:41,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:10:41,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:10:41,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:10:41" (1/1) ... [2018-09-15 14:10:41,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17281938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:41, skipping insertion in model container [2018-09-15 14:10:41,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:10:41" (1/1) ... [2018-09-15 14:10:41,654 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:10:42,184 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:10:42,202 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:10:42,363 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:10:42,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42 WrapperNode [2018-09-15 14:10:42,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:10:42,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:10:42,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:10:42,415 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:10:42,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:10:42,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:10:42,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:10:42,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:10:42,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (1/1) ... [2018-09-15 14:10:42,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:10:42,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:10:42,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:10:42,824 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:10:42,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (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 [2018-09-15 14:10:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:10:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:10:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:10:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:10:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:10:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:10:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:10:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:10:46,376 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:10:46,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:10:46 BoogieIcfgContainer [2018-09-15 14:10:46,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:10:46,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:10:46,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:10:46,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:10:46,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:10:41" (1/3) ... [2018-09-15 14:10:46,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:10:46, skipping insertion in model container [2018-09-15 14:10:46,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:10:42" (2/3) ... [2018-09-15 14:10:46,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:10:46, skipping insertion in model container [2018-09-15 14:10:46,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:10:46" (3/3) ... [2018-09-15 14:10:46,386 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label06_true-unreach-call.c [2018-09-15 14:10:46,395 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:10:46,404 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:10:46,459 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:10:46,460 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:10:46,460 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:10:46,460 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:10:46,461 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:10:46,461 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:10:46,461 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:10:46,461 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:10:46,462 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:10:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-15 14:10:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-15 14:10:46,500 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:10:46,501 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] [2018-09-15 14:10:46,502 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:10:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1783356911, now seen corresponding path program 1 times [2018-09-15 14:10:46,511 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:10:46,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-09-15 14:10:46,515 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [796], [800], [806], [810], [817], [818], [819], [821] [2018-09-15 14:10:46,558 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:10:46,558 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:10:48,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:10:48,809 INFO L272 AbstractInterpreter]: Visited 30 different actions 30 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 14:10:48,863 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:10:49,773 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 73.66% of their original sizes. [2018-09-15 14:10:49,774 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:10:50,019 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:10:50,020 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:10:50,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:10:50,021 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:10:50,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:10:50,034 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:10:50,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:10:50,038 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 6 states. [2018-09-15 14:10:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:10:52,582 INFO L93 Difference]: Finished difference Result 576 states and 995 transitions. [2018-09-15 14:10:52,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:10:52,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-09-15 14:10:52,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:10:52,601 INFO L225 Difference]: With dead ends: 576 [2018-09-15 14:10:52,602 INFO L226 Difference]: Without dead ends: 358 [2018-09-15 14:10:52,609 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:10:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-15 14:10:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-09-15 14:10:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-15 14:10:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2018-09-15 14:10:52,679 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 31 [2018-09-15 14:10:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:10:52,680 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2018-09-15 14:10:52,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:10:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2018-09-15 14:10:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-15 14:10:52,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:10:52,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:10:52,686 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:10:52,686 INFO L82 PathProgramCache]: Analyzing trace with hash 228974179, now seen corresponding path program 1 times [2018-09-15 14:10:52,687 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:10:52,687 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-09-15 14:10:52,687 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-15 14:10:52,693 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:10:52,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:10:56,247 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 14:11:02,329 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:11:02,329 INFO L272 AbstractInterpreter]: Visited 78 different actions 150 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 14:11:02,351 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:11:10,232 INFO L232 lantSequenceWeakener]: Weakened 99 states. On average, predicates are now at 73.13% of their original sizes. [2018-09-15 14:11:10,233 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:11:10,467 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:11:10,467 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:11:10,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 14:11:10,468 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:11:10,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 14:11:10,469 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 14:11:10,469 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 14:11:10,470 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand 10 states. [2018-09-15 14:11:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:11:14,078 INFO L93 Difference]: Finished difference Result 711 states and 1126 transitions. [2018-09-15 14:11:14,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 14:11:14,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2018-09-15 14:11:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:11:14,088 INFO L225 Difference]: With dead ends: 711 [2018-09-15 14:11:14,089 INFO L226 Difference]: Without dead ends: 505 [2018-09-15 14:11:14,092 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-15 14:11:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-09-15 14:11:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 502. [2018-09-15 14:11:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2018-09-15 14:11:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 655 transitions. [2018-09-15 14:11:14,127 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 655 transitions. Word has length 102 [2018-09-15 14:11:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:11:14,128 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 655 transitions. [2018-09-15 14:11:14,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 14:11:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 655 transitions. [2018-09-15 14:11:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-15 14:11:14,133 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:11:14,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:11:14,134 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:11:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash 812548124, now seen corresponding path program 1 times [2018-09-15 14:11:14,134 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:11:14,135 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2018-09-15 14:11:14,135 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-15 14:11:14,140 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:11:14,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:11:54,444 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 14:12:38,679 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:12:38,680 INFO L272 AbstractInterpreter]: Visited 87 different actions 167 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 14:12:38,720 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:13:21,449 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 73.09% of their original sizes. [2018-09-15 14:13:21,450 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:13:21,596 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:13:21,596 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:13:21,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 14:13:21,596 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:13:21,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 14:13:21,597 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 14:13:21,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 14:13:21,598 INFO L87 Difference]: Start difference. First operand 502 states and 655 transitions. Second operand 11 states. [2018-09-15 14:13:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:13:25,259 INFO L93 Difference]: Finished difference Result 1002 states and 1569 transitions. [2018-09-15 14:13:25,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 14:13:25,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2018-09-15 14:13:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:13:25,273 INFO L225 Difference]: With dead ends: 1002 [2018-09-15 14:13:25,273 INFO L226 Difference]: Without dead ends: 796 [2018-09-15 14:13:25,275 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 14:13:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2018-09-15 14:13:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2018-09-15 14:13:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-09-15 14:13:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 962 transitions. [2018-09-15 14:13:25,316 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 962 transitions. Word has length 111 [2018-09-15 14:13:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:13:25,317 INFO L480 AbstractCegarLoop]: Abstraction has 793 states and 962 transitions. [2018-09-15 14:13:25,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 14:13:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 962 transitions. [2018-09-15 14:13:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-15 14:13:25,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:13:25,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:13:25,326 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:13:25,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1611542820, now seen corresponding path program 1 times [2018-09-15 14:13:25,327 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:13:25,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-09-15 14:13:25,327 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-09-15 14:13:25,335 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:13:25,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown