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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:39,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:39,593 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:39,611 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:39,612 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:39,613 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:39,615 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:39,618 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:39,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:39,630 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:39,631 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:39,631 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:39,634 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:39,636 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:39,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:39,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:39,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:39,643 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:39,649 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:39,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:39,654 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:39,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:39,658 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:47:39,670 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:39,703 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:39,703 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:39,705 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:39,705 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:39,705 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:39,706 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:39,706 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:39,706 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:39,707 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:39,707 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:39,707 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:39,707 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:39,708 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:39,708 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:39,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:39,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:39,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:39,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:39,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:39,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:39,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:39,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:39,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:39,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:39,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:39,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:39,713 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:39,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:39,713 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:39,713 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:39,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:39,714 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:39,714 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:39,714 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:39,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:39,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:39,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:39,803 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:39,803 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:39,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i [2018-09-15 15:47:40,187 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d0c2d72/5d0ff6a5fd474e56a28d7f5712d00183/FLAG787878c55 [2018-09-15 15:47:40,385 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:40,385 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i [2018-09-15 15:47:40,393 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d0c2d72/5d0ff6a5fd474e56a28d7f5712d00183/FLAG787878c55 [2018-09-15 15:47:40,408 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d0c2d72/5d0ff6a5fd474e56a28d7f5712d00183 [2018-09-15 15:47:40,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:40,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:40,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:40,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:40,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:40,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7490cb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40, skipping insertion in model container [2018-09-15 15:47:40,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,450 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:40,713 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:40,742 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:40,765 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:40,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40 WrapperNode [2018-09-15 15:47:40,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:40,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:40,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:40,801 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:40,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:40,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:40,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:40,858 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:40,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:40,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:40,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:40,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:40,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (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 15:47:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2018-09-15 15:47:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2018-09-15 15:47:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:41,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:41,667 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:41,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:41 BoogieIcfgContainer [2018-09-15 15:47:41,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:41,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:41,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:41,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:41,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:40" (1/3) ... [2018-09-15 15:47:41,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9be90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:41, skipping insertion in model container [2018-09-15 15:47:41,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (2/3) ... [2018-09-15 15:47:41,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9be90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:41, skipping insertion in model container [2018-09-15 15:47:41,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:41" (3/3) ... [2018-09-15 15:47:41,676 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i [2018-09-15 15:47:41,686 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:41,695 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:41,747 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:41,748 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:41,748 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:41,748 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:41,748 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:41,749 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:41,749 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:41,749 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:41,749 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-09-15 15:47:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-15 15:47:41,776 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:41,777 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] [2018-09-15 15:47:41,778 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1773514428, now seen corresponding path program 1 times [2018-09-15 15:47:41,786 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:41,787 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-09-15 15:47:41,790 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [30], [32], [35], [39], [65], [67], [70], [76], [82], [86], [108], [109], [113], [126], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:41,817 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:41,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:41,889 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:41,891 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 15:47:41,914 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:41,962 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96% of their original sizes. [2018-09-15 15:47:41,963 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:41,984 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:41,986 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:41,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:41,986 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:41,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:41,999 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:42,000 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:42,002 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2018-09-15 15:47:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:42,089 INFO L93 Difference]: Finished difference Result 97 states and 133 transitions. [2018-09-15 15:47:42,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:42,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-09-15 15:47:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:42,099 INFO L225 Difference]: With dead ends: 97 [2018-09-15 15:47:42,099 INFO L226 Difference]: Without dead ends: 45 [2018-09-15 15:47:42,103 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-15 15:47:42,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-15 15:47:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-15 15:47:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-09-15 15:47:42,141 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 27 [2018-09-15 15:47:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:42,142 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-09-15 15:47:42,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2018-09-15 15:47:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-15 15:47:42,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:42,144 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] [2018-09-15 15:47:42,144 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:42,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1145549408, now seen corresponding path program 1 times [2018-09-15 15:47:42,145 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:42,145 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-09-15 15:47:42,146 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [20], [26], [32], [35], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:42,148 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:42,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:42,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:42,155 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 15:47:42,165 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:42,187 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 90% of their original sizes. [2018-09-15 15:47:42,187 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:42,198 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:42,198 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:42,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:42,198 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:42,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:42,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:42,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:42,205 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 3 states. [2018-09-15 15:47:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:42,253 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2018-09-15 15:47:42,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:42,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-09-15 15:47:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:42,255 INFO L225 Difference]: With dead ends: 84 [2018-09-15 15:47:42,255 INFO L226 Difference]: Without dead ends: 48 [2018-09-15 15:47:42,257 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-15 15:47:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-09-15 15:47:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-15 15:47:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2018-09-15 15:47:42,265 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 34 [2018-09-15 15:47:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:42,266 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2018-09-15 15:47:42,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2018-09-15 15:47:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-15 15:47:42,268 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:42,268 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-15 15:47:42,268 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 381128697, now seen corresponding path program 1 times [2018-09-15 15:47:42,269 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:42,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-09-15 15:47:42,269 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [20], [26], [32], [35], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [122], [124], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:42,271 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:42,272 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:42,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:42,302 INFO L272 AbstractInterpreter]: Visited 20 different actions 28 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 52 variables. [2018-09-15 15:47:42,321 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:42,358 INFO L232 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 78.71% of their original sizes. [2018-09-15 15:47:42,358 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:42,612 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:42,612 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:42,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-15 15:47:42,612 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:42,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-15 15:47:42,613 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-15 15:47:42,614 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-09-15 15:47:42,614 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 7 states. [2018-09-15 15:47:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:43,165 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2018-09-15 15:47:43,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-15 15:47:43,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-09-15 15:47:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:43,169 INFO L225 Difference]: With dead ends: 107 [2018-09-15 15:47:43,170 INFO L226 Difference]: Without dead ends: 75 [2018-09-15 15:47:43,171 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-15 15:47:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-15 15:47:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2018-09-15 15:47:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-15 15:47:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2018-09-15 15:47:43,187 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 37 [2018-09-15 15:47:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:43,187 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2018-09-15 15:47:43,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-15 15:47:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2018-09-15 15:47:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-15 15:47:43,189 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:43,189 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-15 15:47:43,189 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1613016009, now seen corresponding path program 1 times [2018-09-15 15:47:43,190 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:43,190 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-09-15 15:47:43,191 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [22], [26], [32], [35], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [122], [124], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:43,192 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:43,193 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:43,212 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:43,213 INFO L272 AbstractInterpreter]: Visited 31 different actions 39 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 52 variables. [2018-09-15 15:47:43,233 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:43,277 INFO L232 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 75.29% of their original sizes. [2018-09-15 15:47:43,278 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:43,512 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:43,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:43,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 15:47:43,513 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:43,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 15:47:43,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 15:47:43,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-09-15 15:47:43,515 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 10 states. [2018-09-15 15:47:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:44,562 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2018-09-15 15:47:44,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 15:47:44,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-15 15:47:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:44,564 INFO L225 Difference]: With dead ends: 127 [2018-09-15 15:47:44,564 INFO L226 Difference]: Without dead ends: 85 [2018-09-15 15:47:44,565 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-15 15:47:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-15 15:47:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62. [2018-09-15 15:47:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-15 15:47:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2018-09-15 15:47:44,575 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 37 [2018-09-15 15:47:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:44,575 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2018-09-15 15:47:44,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 15:47:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2018-09-15 15:47:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-15 15:47:44,577 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:44,578 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-15 15:47:44,578 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1402087609, now seen corresponding path program 1 times [2018-09-15 15:47:44,579 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:44,580 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-09-15 15:47:44,580 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [22], [26], [32], [37], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [122], [124], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:44,583 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:44,583 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:44,615 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:44,616 INFO L272 AbstractInterpreter]: Visited 31 different actions 39 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 51 variables. [2018-09-15 15:47:44,624 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:44,660 INFO L232 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 75.29% of their original sizes. [2018-09-15 15:47:44,660 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:44,820 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:44,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:44,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 15:47:44,820 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:44,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 15:47:44,821 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 15:47:44,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-09-15 15:47:44,821 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 9 states. [2018-09-15 15:47:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:45,277 INFO L93 Difference]: Finished difference Result 120 states and 152 transitions. [2018-09-15 15:47:45,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-15 15:47:45,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-09-15 15:47:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:45,279 INFO L225 Difference]: With dead ends: 120 [2018-09-15 15:47:45,279 INFO L226 Difference]: Without dead ends: 76 [2018-09-15 15:47:45,280 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-09-15 15:47:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-15 15:47:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2018-09-15 15:47:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-15 15:47:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2018-09-15 15:47:45,289 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 37 [2018-09-15 15:47:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:45,290 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2018-09-15 15:47:45,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 15:47:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2018-09-15 15:47:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-15 15:47:45,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:45,292 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-15 15:47:45,292 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash -976115869, now seen corresponding path program 1 times [2018-09-15 15:47:45,295 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:45,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-09-15 15:47:45,296 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [20], [26], [28], [32], [35], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [122], [124], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:45,297 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:45,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:45,329 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:45,330 INFO L272 AbstractInterpreter]: Visited 21 different actions 41 times. Merged at 7 different actions 16 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 53 variables. [2018-09-15 15:47:45,348 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:45,380 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 77.78% of their original sizes. [2018-09-15 15:47:45,380 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:45,444 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:45,444 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:45,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-15 15:47:45,444 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:45,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-15 15:47:45,445 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-15 15:47:45,446 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-15 15:47:45,446 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 8 states. [2018-09-15 15:47:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:45,738 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2018-09-15 15:47:45,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-15 15:47:45,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-15 15:47:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:45,741 INFO L225 Difference]: With dead ends: 125 [2018-09-15 15:47:45,741 INFO L226 Difference]: Without dead ends: 91 [2018-09-15 15:47:45,742 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-15 15:47:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-15 15:47:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2018-09-15 15:47:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-15 15:47:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2018-09-15 15:47:45,752 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 41 [2018-09-15 15:47:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:45,753 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2018-09-15 15:47:45,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-15 15:47:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2018-09-15 15:47:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-15 15:47:45,754 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:45,754 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-15 15:47:45,758 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:45,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1324706721, now seen corresponding path program 1 times [2018-09-15 15:47:45,758 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:45,758 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-09-15 15:47:45,759 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [17], [20], [22], [26], [28], [32], [35], [39], [43], [45], [57], [61], [67], [70], [76], [82], [86], [108], [109], [113], [117], [120], [122], [124], [128], [132], [135], [137], [143], [145], [146], [147], [149] [2018-09-15 15:47:45,760 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:45,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:45,818 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:47:45,818 INFO L272 AbstractInterpreter]: Visited 38 different actions 86 times. Merged at 19 different actions 40 times. Never widened. Found 6 fixpoints after 5 different actions. Largest state had 53 variables. [2018-09-15 15:47:45,858 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:47:45,890 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:47:45,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:45 BoogieIcfgContainer [2018-09-15 15:47:45,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:45,892 INFO L168 Benchmark]: Toolchain (without parser) took 5473.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -525.3 MB). Peak memory consumption was 212.4 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:45,894 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:45,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.50 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. [2018-09-15 15:47:45,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.03 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. [2018-09-15 15:47:45,898 INFO L168 Benchmark]: Boogie Preprocessor took 41.22 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. [2018-09-15 15:47:45,898 INFO L168 Benchmark]: RCFGBuilder took 769.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:45,899 INFO L168 Benchmark]: TraceAbstraction took 4221.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 222.3 MB). Peak memory consumption was 222.3 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:45,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.50 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 Procedure Inliner took 57.03 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. * Boogie Preprocessor took 41.22 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. * RCFGBuilder took 769.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4221.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 222.3 MB). Peak memory consumption was 222.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L79] CALL char A [2 + 2 + 4 +1]; [L79] RET char A [2 + 2 + 4 +1]; [L81] int i = 0; [L81] COND TRUE i < 2 + 2 + 4 [L82] CALL A[i] = __VERIFIER_nondet_char() [L82] RET A[i] = __VERIFIER_nondet_char() [L81] i++ [L81] i++ [L81] COND FALSE !(i < 2 + 2 + 4) [L85] CALL A[2 + 2 + 4] = 0 [L85] RET A[2 + 2 + 4] = 0 [L86] CALL parse_expression_list (A) [L50] int start=0, i=-1, j=-1; [L50] int start=0, i=-1, j=-1; [L50] int start=0, i=-1, j=-1; [L51] CALL char str2[2]; [L51] RET char str2[2]; [L52] COND FALSE !(!str) [L54] i++ [L54] i++ [L55] CALL str[i] [L55] RET str[i] [L56] case 0: [L56] COND TRUE case 0: [L57] CALL, EXPR str[start] [L57] RET, EXPR str[start] [L57] (str[start] == ' ') || (str[start] == '\t') [L57] COND TRUE (str[start] == ' ') || (str[start] == '\t') [L57] COND TRUE (str[start] == ' ') || (str[start] == '\t') [L57] start++ [L57] start++ [L57] CALL, EXPR str[start] [L57] RET, EXPR str[start] [L57] (str[start] == ' ') || (str[start] == '\t') [L57] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L57] CALL, EXPR str[start] [L57] RET, EXPR str[start] [L57] (str[start] == ' ') || (str[start] == '\t') [L57] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L58] CALL, EXPR str[start] [L58] RET, EXPR str[start] [L58] COND TRUE str[start] == '"' [L58] start++ [L58] start++ [L59] j = i-1 [L60] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L60] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L60] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L61] (0 < j) && (str[j] == '"') [L61] COND TRUE (0 < j) && (str[j] == '"') [L61] CALL, EXPR str[j] [L61] RET, EXPR str[j] [L61] (0 < j) && (str[j] == '"') [L61] COND TRUE (0 < j) && (str[j] == '"') [L61] j-- [L61] j-- [L62] COND TRUE start<=j [L63] COND FALSE !(j-start+1>=2) [L66] FCALL r_strncpy(str2, str+start, j-start+1) [L67] CALL __VERIFIER_assert(j - start + 1 < 2) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 53 locations, 1 error locations. UNKNOWN Result, 4.1s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 295 SDtfs, 421 SDslu, 936 SDs, 0 SdLazy, 604 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 226 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.8485784803099832 AbsIntWeakeningRatio, 2.289855072463768 AbsIntAvgWeakeningVarsNumRemoved, 4.628019323671498 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 90 StatesRemovedByMinimization, 5 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: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-47-45-925.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_OpenSER__cases1_stripFullBoth_arr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-47-45-925.csv Received shutdown request...