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/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:01,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:01,009 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:01,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:01,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:01,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:01,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:01,027 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:01,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:01,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:01,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:01,031 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:01,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:01,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:01,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:01,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:01,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:01,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:01,040 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:01,041 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:01,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:01,044 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:01,046 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 01:29:01,047 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 01:29:01,047 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 01:29:01,048 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 01:29:01,049 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 01:29:01,050 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 01:29:01,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 01:29:01,052 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 01:29:01,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 01:29:01,053 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 01:29:01,056 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 01:29:01,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:01,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:01,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:01,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:01,073 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:01,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:01,074 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:01,074 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:01,074 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:01,074 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:01,074 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:01,075 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:01,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:01,076 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:01,076 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:01,076 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:01,076 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:01,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:01,077 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:01,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:01,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:01,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:01,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:01,078 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:01,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:01,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:01,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:01,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:01,079 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:01,079 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:01,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:01,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:01,079 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:01,080 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:01,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:01,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:01,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:01,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:01,145 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:01,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-19 01:29:01,493 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a1fa468/609fae255b3b46c798f274b4468c9ef3/FLAGeb11bde9a [2018-09-19 01:29:01,632 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:01,632 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-19 01:29:01,640 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a1fa468/609fae255b3b46c798f274b4468c9ef3/FLAGeb11bde9a [2018-09-19 01:29:01,657 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a1fa468/609fae255b3b46c798f274b4468c9ef3 [2018-09-19 01:29:01,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:01,675 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:01,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:01,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:01,683 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:01,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:01,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c496ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01, skipping insertion in model container [2018-09-19 01:29:01,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:01,700 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:01,934 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:01,956 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:01,970 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:01,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01 WrapperNode [2018-09-19 01:29:01,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:01,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:01,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:01,990 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:02,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:02,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:02,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:02,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:02,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (1/1) ... [2018-09-19 01:29:02,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:02,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:02,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:02,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:02,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (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 01:29:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:02,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:02,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:02,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:02,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:02,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:02,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:02,806 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:02,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:02 BoogieIcfgContainer [2018-09-19 01:29:02,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:02,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:02,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:02,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:02,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:01" (1/3) ... [2018-09-19 01:29:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c70b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:02, skipping insertion in model container [2018-09-19 01:29:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:01" (2/3) ... [2018-09-19 01:29:02,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c70b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:02, skipping insertion in model container [2018-09-19 01:29:02,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:02" (3/3) ... [2018-09-19 01:29:02,820 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-09-19 01:29:02,831 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:02,839 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:02,890 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:02,891 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:02,891 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:02,891 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:02,891 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:02,892 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:02,892 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:02,892 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:02,892 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-09-19 01:29:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 01:29:02,918 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:02,919 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 01:29:02,920 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1047757685, now seen corresponding path program 1 times [2018-09-19 01:29:02,928 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:02,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-19 01:29:02,932 INFO L202 CegarAbsIntRunner]: [0], [4], [21], [23], [40], [42], [55], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89] [2018-09-19 01:29:02,989 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:02,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:03,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:03,072 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-19 01:29:03,107 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:03,166 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 01:29:03,167 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:03,170 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:03,172 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:03,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 01:29:03,172 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:03,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 01:29:03,183 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 01:29:03,184 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 01:29:03,186 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-09-19 01:29:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:03,208 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-09-19 01:29:03,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 01:29:03,210 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-19 01:29:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:03,217 INFO L225 Difference]: With dead ends: 57 [2018-09-19 01:29:03,218 INFO L226 Difference]: Without dead ends: 29 [2018-09-19 01:29:03,224 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 01:29:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-19 01:29:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-19 01:29:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-19 01:29:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-09-19 01:29:03,267 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-09-19 01:29:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:03,267 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-09-19 01:29:03,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 01:29:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-09-19 01:29:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 01:29:03,269 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:03,269 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 01:29:03,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash -274496668, now seen corresponding path program 1 times [2018-09-19 01:29:03,270 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:03,271 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 01:29:03,271 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [23], [27], [30], [42], [46], [49], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89] [2018-09-19 01:29:03,273 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:03,273 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:03,301 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:29:03,332 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:03,332 INFO L272 AbstractInterpreter]: Visited 20 different actions 20 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-19 01:29:03,344 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:03,361 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:03,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:03 BoogieIcfgContainer [2018-09-19 01:29:03,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:03,362 INFO L168 Benchmark]: Toolchain (without parser) took 1690.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -751.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:03,364 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:03,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.11 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 01:29:03,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:03,367 INFO L168 Benchmark]: Boogie Preprocessor took 36.54 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 01:29:03,368 INFO L168 Benchmark]: RCFGBuilder took 751.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:03,369 INFO L168 Benchmark]: TraceAbstraction took 553.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:03,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.11 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 28.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.54 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 751.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 553.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 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: [L13] unsigned int M = __VERIFIER_nondet_uint(); [L14] int A[M], B[M], C[M]; [L15] unsigned int i; [L16] i=0 [L16] COND FALSE !(i