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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:36:16,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:36:16,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:36:16,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:36:16,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:36:16,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:36:16,583 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:36:16,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:36:16,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:36:16,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:36:16,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:36:16,589 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:36:16,590 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:36:16,591 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:36:16,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:36:16,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:36:16,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:36:16,596 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:36:16,598 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:36:16,600 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:36:16,601 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:36:16,605 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:36:16,610 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 11:36:16,625 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 11:36:16,642 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:36:16,642 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:36:16,643 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:36:16,643 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:36:16,643 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:36:16,644 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:36:16,644 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:36:16,644 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 11:36:16,644 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 11:36:16,644 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:36:16,645 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:36:16,645 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:36:16,646 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:36:16,646 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:36:16,646 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:36:16,646 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:36:16,646 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:36:16,647 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:36:16,647 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:36:16,647 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:36:16,647 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:36:16,647 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:36:16,648 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:36:16,648 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:36:16,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:36:16,648 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:36:16,648 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:36:16,649 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:36:16,649 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:36:16,649 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:36:16,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:36:16,650 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:36:16,650 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:36:16,650 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:36:16,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:36:16,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:36:16,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:36:16,712 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:36:16,713 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:36:16,714 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-19 11:36:17,088 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d02fd93f/3532262a064f4be3a00c434fcf091227/FLAG6e0c03493 [2018-09-19 11:36:17,275 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:36:17,276 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-19 11:36:17,283 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d02fd93f/3532262a064f4be3a00c434fcf091227/FLAG6e0c03493 [2018-09-19 11:36:17,305 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d02fd93f/3532262a064f4be3a00c434fcf091227 [2018-09-19 11:36:17,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:36:17,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:36:17,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:17,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:36:17,325 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:36:17,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7005b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17, skipping insertion in model container [2018-09-19 11:36:17,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,341 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:36:17,543 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:17,562 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:36:17,568 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:17,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17 WrapperNode [2018-09-19 11:36:17,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:17,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:17,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:36:17,584 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:36:17,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:17,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:36:17,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:36:17,609 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:36:17,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (1/1) ... [2018-09-19 11:36:17,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:36:17,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:36:17,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:36:17,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:36:17,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (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 11:36:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:36:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:36:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:36:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:36:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:36:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:36:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 11:36:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 11:36:18,031 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:36:18,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:18 BoogieIcfgContainer [2018-09-19 11:36:18,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:36:18,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:36:18,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:36:18,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:36:18,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:36:17" (1/3) ... [2018-09-19 11:36:18,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95a159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:18, skipping insertion in model container [2018-09-19 11:36:18,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:17" (2/3) ... [2018-09-19 11:36:18,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95a159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:18, skipping insertion in model container [2018-09-19 11:36:18,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:18" (3/3) ... [2018-09-19 11:36:18,040 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-19 11:36:18,051 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:36:18,058 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:36:18,103 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:36:18,104 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:36:18,104 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:36:18,104 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:36:18,105 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:36:18,105 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:36:18,105 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:36:18,106 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:36:18,106 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:36:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-09-19 11:36:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 11:36:18,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:18,145 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:18,150 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash 188383829, now seen corresponding path program 1 times [2018-09-19 11:36:18,161 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:18,162 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 11:36:18,167 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [19], [23], [28], [34], [42], [45], [47], [53], [54], [55], [59] [2018-09-19 11:36:18,203 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:18,204 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:18,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:18,274 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 11:36:18,320 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:18,369 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 11:36:18,369 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:18,372 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:18,373 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:18,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 11:36:18,374 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:18,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 11:36:18,384 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 11:36:18,384 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 11:36:18,387 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-09-19 11:36:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:18,407 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2018-09-19 11:36:18,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 11:36:18,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-09-19 11:36:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:18,420 INFO L225 Difference]: With dead ends: 42 [2018-09-19 11:36:18,420 INFO L226 Difference]: Without dead ends: 21 [2018-09-19 11:36:18,424 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 13 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 11:36:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-19 11:36:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-19 11:36:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-19 11:36:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-09-19 11:36:18,464 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-09-19 11:36:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:18,465 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-09-19 11:36:18,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 11:36:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-09-19 11:36:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-19 11:36:18,467 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:18,468 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:18,468 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1875102229, now seen corresponding path program 1 times [2018-09-19 11:36:18,469 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:18,469 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-19 11:36:18,469 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [19], [23], [28], [34], [42], [45], [47], [53], [54], [55], [59] [2018-09-19 11:36:18,471 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:18,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:18,483 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:18,483 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 11:36:18,521 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:18,534 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 11:36:18,535 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:18,565 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:18,565 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:18,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 11:36:18,565 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 11:36:18,567 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 11:36:18,567 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:18,567 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2018-09-19 11:36:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:18,748 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-09-19 11:36:18,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 11:36:18,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-09-19 11:36:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:18,750 INFO L225 Difference]: With dead ends: 42 [2018-09-19 11:36:18,750 INFO L226 Difference]: Without dead ends: 29 [2018-09-19 11:36:18,752 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-19 11:36:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-09-19 11:36:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-19 11:36:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-09-19 11:36:18,760 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2018-09-19 11:36:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:18,761 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-09-19 11:36:18,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 11:36:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-09-19 11:36:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 11:36:18,762 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:18,762 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:18,763 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:18,763 INFO L82 PathProgramCache]: Analyzing trace with hash 620435632, now seen corresponding path program 1 times [2018-09-19 11:36:18,763 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:18,764 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-19 11:36:18,764 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [19], [23], [28], [31], [42], [45], [47], [53], [54], [55], [57] [2018-09-19 11:36:18,766 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:18,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:18,774 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:36:18,833 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 11:36:18,833 INFO L272 AbstractInterpreter]: Visited 17 different actions 51 times. Merged at 4 different actions 27 times. Widened at 1 different actions 3 times. Found 7 fixpoints after 2 different actions. Largest state had 3 variables. [2018-09-19 11:36:18,853 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 11:36:18,872 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 11:36:18,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:36:18 BoogieIcfgContainer [2018-09-19 11:36:18,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:36:18,874 INFO L168 Benchmark]: Toolchain (without parser) took 1558.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -740.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:18,876 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 11:36:18,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.48 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 11:36:18,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.19 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 11:36:18,879 INFO L168 Benchmark]: Boogie Preprocessor took 24.17 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 11:36:18,879 INFO L168 Benchmark]: RCFGBuilder took 398.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:18,881 INFO L168 Benchmark]: TraceAbstraction took 840.30 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:18,886 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 264.48 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 25.19 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 24.17 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 398.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840.30 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: 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: [L18] unsigned int array[1000]; [L19] unsigned int index; [L21] index = 0 [L21] COND TRUE index < 1000 [L22] array[index] = (index % 2) [L21] index++ [L21] index++ [L21] COND FALSE !(index < 1000) [L25] index = 0 [L25] COND TRUE index < 1000 [L26] COND TRUE index % 2 == 0 [L27] CALL __VERIFIER_assert(array[index] == 0) [L10] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 4 SDslu, 15 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.37037037037037035 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 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/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-36-18-899.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-36-18-899.csv Received shutdown request...