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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:17,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:17,697 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:17,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:17,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:17,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:17,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:17,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:17,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:17,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:17,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:17,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:17,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:17,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:17,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:17,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:17,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:17,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:17,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:17,727 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:17,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:17,729 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:17,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:20:17,740 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 17:20:17,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:17,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:17,772 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:17,772 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:17,772 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:17,772 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:17,772 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:17,772 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:17,773 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:17,773 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:17,773 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:17,773 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:17,774 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:17,774 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:17,774 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:17,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:17,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:17,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:17,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:17,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:17,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:17,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:17,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:17,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:17,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:17,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:17,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:17,779 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:17,780 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:17,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:17,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:17,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:17,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:17,871 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:17,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-09-15 17:20:18,219 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb0f514/e46c0e0bb98c4205acef22f5bf41565e/FLAG755514f36 [2018-09-15 17:20:18,339 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:18,340 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-09-15 17:20:18,347 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb0f514/e46c0e0bb98c4205acef22f5bf41565e/FLAG755514f36 [2018-09-15 17:20:18,364 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bb0f514/e46c0e0bb98c4205acef22f5bf41565e [2018-09-15 17:20:18,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:18,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:18,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:18,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:18,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:18,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf4e0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18, skipping insertion in model container [2018-09-15 17:20:18,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,404 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:18,640 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:18,657 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:18,663 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:18,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18 WrapperNode [2018-09-15 17:20:18,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:18,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:18,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:18,681 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:18,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:18,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:18,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:18,703 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:18,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... [2018-09-15 17:20:18,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:18,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:18,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:18,723 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:18,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:19,111 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:19,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:19 BoogieIcfgContainer [2018-09-15 17:20:19,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:19,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:19,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:19,116 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:19,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:18" (1/3) ... [2018-09-15 17:20:19,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7b5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:19, skipping insertion in model container [2018-09-15 17:20:19,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:18" (2/3) ... [2018-09-15 17:20:19,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7b5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:19, skipping insertion in model container [2018-09-15 17:20:19,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:19" (3/3) ... [2018-09-15 17:20:19,120 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr_true-unreach-call_true-termination.i [2018-09-15 17:20:19,131 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:19,139 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:19,192 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:19,193 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:19,193 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:19,193 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:19,193 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:19,193 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:19,193 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:19,194 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:19,194 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-15 17:20:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 17:20:19,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:19,219 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:19,220 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash -745796184, now seen corresponding path program 1 times [2018-09-15 17:20:19,229 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:19,230 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 17:20:19,232 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [19], [26], [39], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-15 17:20:19,285 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:19,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:19,326 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:19,328 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 17:20:19,360 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:19,422 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 17:20:19,422 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:19,455 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:19,457 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:19,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 17:20:19,457 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:19,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 17:20:19,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 17:20:19,473 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:19,476 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-09-15 17:20:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:19,600 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2018-09-15 17:20:19,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 17:20:19,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-15 17:20:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:19,613 INFO L225 Difference]: With dead ends: 58 [2018-09-15 17:20:19,613 INFO L226 Difference]: Without dead ends: 28 [2018-09-15 17:20:19,617 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:19,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-15 17:20:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2018-09-15 17:20:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 17:20:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-15 17:20:19,659 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-15 17:20:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:19,660 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-15 17:20:19,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 17:20:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-15 17:20:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 17:20:19,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:19,661 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:19,662 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash 800081396, now seen corresponding path program 1 times [2018-09-15 17:20:19,662 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:19,663 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 17:20:19,663 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [26], [30], [32], [35], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-15 17:20:19,666 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:19,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:19,702 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:19,703 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 17:20:19,754 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:19,794 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 17:20:19,795 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:20,062 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:20,063 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:20,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-15 17:20:20,063 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:20,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-15 17:20:20,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-15 17:20:20,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-15 17:20:20,065 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 8 states. [2018-09-15 17:20:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:20,319 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-09-15 17:20:20,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-15 17:20:20,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-09-15 17:20:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:20,323 INFO L225 Difference]: With dead ends: 32 [2018-09-15 17:20:20,323 INFO L226 Difference]: Without dead ends: 26 [2018-09-15 17:20:20,328 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-15 17:20:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-15 17:20:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-15 17:20:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-15 17:20:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-09-15 17:20:20,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2018-09-15 17:20:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:20,341 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-09-15 17:20:20,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-15 17:20:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-09-15 17:20:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-15 17:20:20,343 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:20,343 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:20,343 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1097925811, now seen corresponding path program 1 times [2018-09-15 17:20:20,344 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:20,344 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-15 17:20:20,344 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [17], [26], [30], [32], [35], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-15 17:20:20,349 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:20,349 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:20,437 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:20,437 INFO L272 AbstractInterpreter]: Visited 18 different actions 105 times. Merged at 9 different actions 66 times. Widened at 2 different actions 7 times. Found 4 fixpoints after 2 different actions. Largest state had 5 variables. [2018-09-15 17:20:20,474 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:20,499 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 17:20:20,499 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:20,767 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:20,767 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:20,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 17:20:20,768 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:20,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 17:20:20,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 17:20:20,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-15 17:20:20,769 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 9 states. [2018-09-15 17:20:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:20,944 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-09-15 17:20:20,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 17:20:20,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-09-15 17:20:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:20,950 INFO L225 Difference]: With dead ends: 35 [2018-09-15 17:20:20,950 INFO L226 Difference]: Without dead ends: 29 [2018-09-15 17:20:20,951 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-15 17:20:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-15 17:20:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-09-15 17:20:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-15 17:20:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-09-15 17:20:20,957 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 21 [2018-09-15 17:20:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:20,957 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-09-15 17:20:20,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 17:20:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-09-15 17:20:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-15 17:20:20,958 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:20,958 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:20,959 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:20,959 INFO L82 PathProgramCache]: Analyzing trace with hash -278190259, now seen corresponding path program 1 times [2018-09-15 17:20:20,959 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:20,959 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-15 17:20:20,960 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [26], [30], [32], [35], [37], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-15 17:20:20,962 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:20,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:20,992 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:20,992 INFO L272 AbstractInterpreter]: Visited 18 different actions 81 times. Merged at 5 different actions 42 times. Widened at 1 different actions 5 times. Found 4 fixpoints after 2 different actions. Largest state had 6 variables. [2018-09-15 17:20:21,031 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:21,054 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 17:20:21,054 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:21,217 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:21,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:21,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 17:20:21,218 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:21,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 17:20:21,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 17:20:21,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-15 17:20:21,220 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2018-09-15 17:20:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:21,497 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-09-15 17:20:21,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 17:20:21,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-09-15 17:20:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:21,501 INFO L225 Difference]: With dead ends: 49 [2018-09-15 17:20:21,501 INFO L226 Difference]: Without dead ends: 32 [2018-09-15 17:20:21,502 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-15 17:20:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2018-09-15 17:20:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-15 17:20:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-09-15 17:20:21,508 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-09-15 17:20:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:21,509 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-09-15 17:20:21,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 17:20:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-09-15 17:20:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 17:20:21,510 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:21,510 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:21,510 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash -597656530, now seen corresponding path program 1 times [2018-09-15 17:20:21,511 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:21,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 17:20:21,511 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [17], [26], [30], [32], [35], [37], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-15 17:20:21,513 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:21,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:21,568 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:21,568 INFO L272 AbstractInterpreter]: Visited 19 different actions 146 times. Merged at 10 different actions 89 times. Widened at 3 different actions 11 times. Found 13 fixpoints after 4 different actions. Largest state had 7 variables. [2018-09-15 17:20:21,604 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:21,649 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 17:20:21,650 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:21,944 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:21,945 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:21,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 17:20:21,946 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:21,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 17:20:21,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 17:20:21,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-15 17:20:21,948 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-09-15 17:20:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:22,353 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-09-15 17:20:22,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-15 17:20:22,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-09-15 17:20:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:22,354 INFO L225 Difference]: With dead ends: 25 [2018-09-15 17:20:22,354 INFO L226 Difference]: Without dead ends: 0 [2018-09-15 17:20:22,355 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-15 17:20:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-15 17:20:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-15 17:20:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-15 17:20:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-15 17:20:22,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-09-15 17:20:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:22,357 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-15 17:20:22,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 17:20:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-15 17:20:22,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-15 17:20:22,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-15 17:20:23,074 WARN L178 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 14 [2018-09-15 17:20:23,077 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-15 17:20:23,077 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-15 17:20:23,077 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-15 17:20:23,077 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-15 17:20:23,077 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-15 17:20:23,077 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-15 17:20:23,077 INFO L426 ceAbstractionStarter]: For program point L25(lines 10 28) no Hoare annotation was computed. [2018-09-15 17:20:23,077 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 21 24) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L21-3(lines 20 24) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L21-4(lines 10 28) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-09-15 17:20:23,078 INFO L426 ceAbstractionStarter]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2018-09-15 17:20:23,079 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-09-15 17:20:23,079 INFO L426 ceAbstractionStarter]: For program point L15-3(lines 14 17) no Hoare annotation was computed. [2018-09-15 17:20:23,079 INFO L426 ceAbstractionStarter]: For program point L15-4(lines 10 28) no Hoare annotation was computed. [2018-09-15 17:20:23,079 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-09-15 17:20:23,079 INFO L422 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 (* 2 main_~j~0)) (<= main_~i~0 (+ main_~j~0 100)) (<= main_~j~0 main_~i~0) (<= (* 2 main_~i~0) 398)) [2018-09-15 17:20:23,080 INFO L426 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-09-15 17:20:23,080 INFO L426 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-09-15 17:20:23,080 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-15 17:20:23,080 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-15 17:20:23,080 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-15 17:20:23,081 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-15 17:20:23,081 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-15 17:20:23,081 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-15 17:20:23,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:23 BoogieIcfgContainer [2018-09-15 17:20:23,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:23,085 INFO L168 Benchmark]: Toolchain (without parser) took 4710.32 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 2.1 GB in the end (delta: -655.2 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,086 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. [2018-09-15 17:20:23,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:23,088 INFO L168 Benchmark]: Boogie Preprocessor took 19.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:23,089 INFO L168 Benchmark]: RCFGBuilder took 389.49 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: -791.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,090 INFO L168 Benchmark]: TraceAbstraction took 3971.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 125.5 MB). Peak memory consumption was 125.5 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,095 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 302.54 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 21.18 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 19.71 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 389.49 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: -791.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3971.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 125.5 MB). Peak memory consumption was 125.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 70 SDslu, 214 SDs, 0 SdLazy, 199 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s 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, 0.5s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9382744495647721 AbsIntWeakeningRatio, 0.3870967741935484 AbsIntAvgWeakeningVarsNumRemoved, 0.5161290322580645 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 24 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_concat-noarr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-23-109.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_concat-noarr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-23-109.csv Received shutdown request...