java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 05:01:23,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 05:01:23,600 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 05:01:23,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 05:01:23,613 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 05:01:23,614 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 05:01:23,616 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 05:01:23,617 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 05:01:23,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 05:01:23,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 05:01:23,621 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 05:01:23,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 05:01:23,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 05:01:23,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 05:01:23,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 05:01:23,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 05:01:23,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 05:01:23,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 05:01:23,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 05:01:23,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 05:01:23,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 05:01:23,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 05:01:23,638 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 05:01:23,648 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-19 05:01:23,663 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 05:01:23,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 05:01:23,665 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 05:01:23,665 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 05:01:23,665 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 05:01:23,665 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 05:01:23,666 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 05:01:23,666 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 05:01:23,666 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 05:01:23,666 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-19 05:01:23,666 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 05:01:23,667 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 05:01:23,667 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 05:01:23,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 05:01:23,668 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 05:01:23,668 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 05:01:23,668 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 05:01:23,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 05:01:23,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 05:01:23,669 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 05:01:23,669 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 05:01:23,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 05:01:23,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 05:01:23,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 05:01:23,670 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 05:01:23,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 05:01:23,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 05:01:23,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 05:01:23,671 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 05:01:23,671 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 05:01:23,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 05:01:23,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 05:01:23,672 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 05:01:23,672 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 05:01:23,672 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 05:01:23,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 05:01:23,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 05:01:23,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 05:01:23,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 05:01:23,744 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 05:01:23,745 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 05:01:24,096 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7cda70c/e16707cd598046ff8a779161db6fe5d0/FLAGf2e417c43 [2018-09-19 05:01:24,262 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 05:01:24,262 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 05:01:24,269 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7cda70c/e16707cd598046ff8a779161db6fe5d0/FLAGf2e417c43 [2018-09-19 05:01:24,289 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7cda70c/e16707cd598046ff8a779161db6fe5d0 [2018-09-19 05:01:24,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 05:01:24,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 05:01:24,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 05:01:24,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 05:01:24,322 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 05:01:24,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49611c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24, skipping insertion in model container [2018-09-19 05:01:24,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,340 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 05:01:24,547 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 05:01:24,567 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 05:01:24,581 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 05:01:24,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24 WrapperNode [2018-09-19 05:01:24,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 05:01:24,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 05:01:24,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 05:01:24,599 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 05:01:24,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 05:01:24,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 05:01:24,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 05:01:24,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 05:01:24,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (1/1) ... [2018-09-19 05:01:24,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 05:01:24,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 05:01:24,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 05:01:24,663 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 05:01:24,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (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 05:01:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 05:01:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 05:01:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 05:01:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 05:01:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 05:01:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 05:01:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 05:01:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 05:01:25,246 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 05:01:25,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 05:01:25 BoogieIcfgContainer [2018-09-19 05:01:25,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 05:01:25,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 05:01:25,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 05:01:25,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 05:01:25,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 05:01:24" (1/3) ... [2018-09-19 05:01:25,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1d99d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 05:01:25, skipping insertion in model container [2018-09-19 05:01:25,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 05:01:24" (2/3) ... [2018-09-19 05:01:25,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1d99d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 05:01:25, skipping insertion in model container [2018-09-19 05:01:25,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 05:01:25" (3/3) ... [2018-09-19 05:01:25,255 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-09-19 05:01:25,265 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 05:01:25,274 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 05:01:25,324 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 05:01:25,325 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 05:01:25,326 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 05:01:25,326 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 05:01:25,326 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 05:01:25,326 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 05:01:25,326 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 05:01:25,326 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 05:01:25,327 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 05:01:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-19 05:01:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 05:01:25,353 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:25,354 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:25,355 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-09-19 05:01:25,362 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:25,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 05:01:25,366 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [35], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 05:01:25,400 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:25,400 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:25,476 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 05:01:25,478 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 05:01:25,495 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 05:01:25,547 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 70.83% of their original sizes. [2018-09-19 05:01:25,548 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 05:01:25,582 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 05:01:25,583 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 05:01:25,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 05:01:25,584 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 05:01:25,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 05:01:25,597 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 05:01:25,598 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 05:01:25,600 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-09-19 05:01:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 05:01:25,773 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2018-09-19 05:01:25,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 05:01:25,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-19 05:01:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 05:01:25,786 INFO L225 Difference]: With dead ends: 56 [2018-09-19 05:01:25,786 INFO L226 Difference]: Without dead ends: 32 [2018-09-19 05:01:25,790 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 05:01:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-19 05:01:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-09-19 05:01:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-19 05:01:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-19 05:01:25,834 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-09-19 05:01:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 05:01:25,835 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-19 05:01:25,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 05:01:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-19 05:01:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-19 05:01:25,836 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:25,836 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:25,837 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-09-19 05:01:25,838 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:25,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-19 05:01:25,838 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 05:01:25,840 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:25,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:25,850 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 05:01:25,850 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 05:01:25,880 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 05:01:25,897 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 59.33% of their original sizes. [2018-09-19 05:01:25,897 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 05:01:25,957 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 05:01:25,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 05:01:25,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 05:01:25,957 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 05:01:25,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 05:01:25,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 05:01:25,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 05:01:25,960 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2018-09-19 05:01:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 05:01:26,225 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-19 05:01:26,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 05:01:26,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-19 05:01:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 05:01:26,227 INFO L225 Difference]: With dead ends: 37 [2018-09-19 05:01:26,227 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 05:01:26,229 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-19 05:01:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 05:01:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-19 05:01:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-19 05:01:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-09-19 05:01:26,237 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-09-19 05:01:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 05:01:26,237 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-09-19 05:01:26,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 05:01:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-09-19 05:01:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 05:01:26,239 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 05:01:26,239 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 05:01:26,239 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 05:01:26,240 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-09-19 05:01:26,240 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 05:01:26,240 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-19 05:01:26,240 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 05:01:26,246 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-19 05:01:26,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 05:01:26,338 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 05:01:26,338 INFO L272 AbstractInterpreter]: Visited 18 different actions 80 times. Merged at 8 different actions 44 times. Widened at 2 different actions 3 times. Found 2 fixpoints after 2 different actions. Largest state had 17 variables. [2018-09-19 05:01:26,350 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 05:01:26,367 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 05:01:26,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 05:01:26 BoogieIcfgContainer [2018-09-19 05:01:26,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 05:01:26,369 INFO L168 Benchmark]: Toolchain (without parser) took 2065.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -734.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2018-09-19 05:01:26,371 INFO L168 Benchmark]: CDTParser took 0.22 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 05:01:26,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.80 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 05:01:26,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.86 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 05:01:26,373 INFO L168 Benchmark]: Boogie Preprocessor took 30.81 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 05:01:26,374 INFO L168 Benchmark]: RCFGBuilder took 584.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-09-19 05:01:26,375 INFO L168 Benchmark]: TraceAbstraction took 1119.98 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: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-09-19 05:01:26,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 286.80 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 25.86 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 30.81 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 584.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1119.98 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: 40.4 MB). Peak memory consumption was 40.4 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: [L11] int c1 = 4000; [L12] int c2 = 2000; [L13] int c3 = 10000; [L14] int n, v; [L15] int i, k, j; [L16] n = __VERIFIER_nondet_int() [L17] COND FALSE !(!(0 <= n && n < 10)) [L18] k = 0 [L19] i = 0 [L20] COND TRUE i < n [L21] i++ [L21] i++ [L22] v = __VERIFIER_nondet_int() [L23] COND FALSE !(!(0 <= v && n < 2)) [L24] COND TRUE v == 0 [L25] k += c1 [L20] COND FALSE !(i < n) [L31] j = 0 [L32] COND TRUE j < n [L33] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 63 SDslu, 37 SDs, 0 SdLazy, 52 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 0.95679012345679 AbsIntWeakeningRatio, 1.4074074074074074 AbsIntAvgWeakeningVarsNumRemoved, 1.037037037037037 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 10 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/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_05-01-26-393.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_05-01-26-393.csv Received shutdown request...