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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/linear_sea.ch_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:28:55,898 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:28:55,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:28:55,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:28:55,914 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:28:55,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:28:55,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:28:55,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:28:55,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:28:55,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:28:55,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:28:55,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:28:55,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:28:55,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:28:55,926 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:28:55,927 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:28:55,928 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:28:55,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:28:55,932 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:28:55,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:28:55,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:28:55,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:28:55,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 01:28:55,949 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:28:55,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:28:55,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:28:55,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:28:55,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:28:55,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:28:55,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:28:55,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:28:55,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:28:55,982 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:28:55,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:28:55,983 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:28:55,984 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:28:55,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:28:55,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:28:55,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:28:55,986 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:28:55,986 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:28:55,986 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:28:55,986 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:28:55,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:28:55,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:28:55,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:28:55,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:28:55,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:28:55,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:28:55,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:28:55,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:28:55,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:28:55,990 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:28:55,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:28:55,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:28:55,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:28:55,991 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:28:55,991 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:28:56,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:28:56,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:28:56,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:28:56,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:28:56,090 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:28:56,091 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch_true-unreach-call.i [2018-09-19 01:28:56,474 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c9988b/eec88212dfaa45e7b40e118f7da1a98a/FLAG67d6c01b7 [2018-09-19 01:28:56,659 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:28:56,659 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch_true-unreach-call.i [2018-09-19 01:28:56,671 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c9988b/eec88212dfaa45e7b40e118f7da1a98a/FLAG67d6c01b7 [2018-09-19 01:28:56,696 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c9988b/eec88212dfaa45e7b40e118f7da1a98a [2018-09-19 01:28:56,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:28:56,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:28:56,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:28:56,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:28:56,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:28:56,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:56,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bb34dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56, skipping insertion in model container [2018-09-19 01:28:56,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:56,736 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:28:56,924 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:28:56,948 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:28:56,956 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:28:56,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56 WrapperNode [2018-09-19 01:28:56,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:28:56,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:28:56,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:28:56,975 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:28:56,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:56,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:28:57,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:28:57,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:28:57,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:28:57,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... [2018-09-19 01:28:57,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:28:57,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:28:57,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:28:57,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:28:57,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:28:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:28:57,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:28:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2018-09-19 01:28:57,192 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2018-09-19 01:28:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:28:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:28:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:28:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:28:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:28:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:28:57,636 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:28:57,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:28:57 BoogieIcfgContainer [2018-09-19 01:28:57,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:28:57,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:28:57,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:28:57,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:28:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:28:56" (1/3) ... [2018-09-19 01:28:57,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2835e385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:28:57, skipping insertion in model container [2018-09-19 01:28:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:28:56" (2/3) ... [2018-09-19 01:28:57,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2835e385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:28:57, skipping insertion in model container [2018-09-19 01:28:57,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:28:57" (3/3) ... [2018-09-19 01:28:57,648 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_sea.ch_true-unreach-call.i [2018-09-19 01:28:57,661 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:28:57,672 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:28:57,722 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:28:57,723 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:28:57,723 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:28:57,724 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:28:57,724 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:28:57,724 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:28:57,724 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:28:57,724 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:28:57,724 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:28:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-09-19 01:28:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 01:28:57,749 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:28:57,750 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:28:57,751 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:28:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1679407704, now seen corresponding path program 1 times [2018-09-19 01:28:57,759 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:28:57,760 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-19 01:28:57,763 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [21], [25], [27], [31], [33], [37], [40], [42], [48], [49], [50], [52], [53], [54] [2018-09-19 01:28:57,816 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:28:57,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:28:57,970 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:28:58,107 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:28:58,109 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-09-19 01:28:58,128 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:28:58,279 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 89.58% of their original sizes. [2018-09-19 01:28:58,280 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:28:58,458 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:28:58,459 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:28:58,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 01:28:58,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:28:58,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 01:28:58,473 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 01:28:58,474 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 01:28:58,476 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-09-19 01:28:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:28:58,938 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-09-19 01:28:58,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 01:28:58,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-09-19 01:28:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:28:58,954 INFO L225 Difference]: With dead ends: 51 [2018-09-19 01:28:58,954 INFO L226 Difference]: Without dead ends: 28 [2018-09-19 01:28:58,958 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 01:28:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-19 01:28:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-09-19 01:28:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-19 01:28:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-09-19 01:28:58,998 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2018-09-19 01:28:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:28:58,999 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-09-19 01:28:58,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 01:28:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-09-19 01:28:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 01:28:59,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:28:59,001 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] [2018-09-19 01:28:59,001 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:28:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1597240285, now seen corresponding path program 1 times [2018-09-19 01:28:59,002 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:28:59,002 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 01:28:59,002 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [8], [11], [17], [25], [27], [31], [33], [37], [40], [42], [48], [49], [50], [52], [53], [54] [2018-09-19 01:28:59,005 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:28:59,006 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:28:59,019 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:28:59,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:28:59,156 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-09-19 01:28:59,194 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:28:59,373 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 85.87% of their original sizes. [2018-09-19 01:28:59,373 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:00,030 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:00,031 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:00,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 01:29:00,031 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:00,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 01:29:00,033 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 01:29:00,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-09-19 01:29:00,034 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 11 states. [2018-09-19 01:29:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:00,841 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-09-19 01:29:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 01:29:00,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-09-19 01:29:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:00,843 INFO L225 Difference]: With dead ends: 36 [2018-09-19 01:29:00,843 INFO L226 Difference]: Without dead ends: 25 [2018-09-19 01:29:00,845 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-09-19 01:29:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-19 01:29:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-19 01:29:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-19 01:29:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-19 01:29:00,854 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-09-19 01:29:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:00,854 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-19 01:29:00,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 01:29:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-19 01:29:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 01:29:00,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:00,856 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] [2018-09-19 01:29:00,856 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1819847252, now seen corresponding path program 1 times [2018-09-19 01:29:00,857 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:00,857 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 01:29:00,857 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [8], [11], [17], [19], [26], [27], [31], [33], [37], [40], [42], [48], [49], [50], [52], [53], [54] [2018-09-19 01:29:00,860 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:00,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:00,870 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:29:02,232 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:02,232 INFO L272 AbstractInterpreter]: Visited 21 different actions 269 times. Merged at 7 different actions 217 times. Widened at 1 different actions 27 times. Found 32 fixpoints after 2 different actions. Largest state had 29 variables. [2018-09-19 01:29:02,273 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:02,295 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:02,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:02 BoogieIcfgContainer [2018-09-19 01:29:02,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:02,297 INFO L168 Benchmark]: Toolchain (without parser) took 5588.58 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 744.0 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:02,299 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-19 01:29:02,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:02,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:02,301 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:02,302 INFO L168 Benchmark]: RCFGBuilder took 586.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:02,303 INFO L168 Benchmark]: TraceAbstraction took 4657.38 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 364.9 MB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -384.2 MB). Peak memory consumption was 771.0 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:02,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.09 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 47.41 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 27.10 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 586.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4657.38 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 364.9 MB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -384.2 MB). Peak memory consumption was 771.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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: [L10] unsigned int SIZE; [L20] SIZE=(__VERIFIER_nondet_uint()/8)+1 [L21] CALL int a[SIZE]; [L21] RET int a[SIZE]; [L22] CALL a[SIZE/2]=3 [L22] RET a[SIZE/2]=3 [L23] CALL, EXPR linear_search(a,SIZE,3) [L12] unsigned int j=0; [L13] j