java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:16:19,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:16:19,519 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:16:19,537 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:16:19,537 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:16:19,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:16:19,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:16:19,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:16:19,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:16:19,544 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:16:19,545 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:16:19,545 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:16:19,546 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:16:19,547 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:16:19,548 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:16:19,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:16:19,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:16:19,552 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:16:19,554 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:16:19,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:16:19,557 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:16:19,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:16:19,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:16:19,569 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 12:16:19,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:16:19,591 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:16:19,592 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:16:19,592 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:16:19,592 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:16:19,592 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:16:19,592 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:16:19,593 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:16:19,593 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:16:19,593 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:16:19,593 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:16:19,593 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:16:19,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:16:19,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:16:19,598 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:16:19,598 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:16:19,598 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:16:19,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:16:19,599 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:16:19,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:16:19,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:16:19,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:16:19,600 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:16:19,601 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:16:19,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:16:19,601 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:16:19,601 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:16:19,602 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:16:19,603 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:16:19,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:16:19,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:16:19,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:16:19,672 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:16:19,673 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:16:19,674 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-10-24 12:16:19,733 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b064b88f/611b1d5e375248d0bef340066a31ec47/FLAG43d9c8981 [2018-10-24 12:16:20,204 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:16:20,205 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-10-24 12:16:20,212 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b064b88f/611b1d5e375248d0bef340066a31ec47/FLAG43d9c8981 [2018-10-24 12:16:20,228 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b064b88f/611b1d5e375248d0bef340066a31ec47 [2018-10-24 12:16:20,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:16:20,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:16:20,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:16:20,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:16:20,247 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:16:20,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ada9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20, skipping insertion in model container [2018-10-24 12:16:20,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:16:20,287 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:16:20,505 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:16:20,509 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:16:20,532 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:16:20,550 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:16:20,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20 WrapperNode [2018-10-24 12:16:20,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:16:20,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:16:20,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:16:20,552 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:16:20,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:16:20,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:16:20,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:16:20,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:16:20,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... [2018-10-24 12:16:20,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:16:20,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:16:20,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:16:20,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:16:20,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:16:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:16:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:16:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:16:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:16:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:16:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:16:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:16:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:16:21,053 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:16:21,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:16:21 BoogieIcfgContainer [2018-10-24 12:16:21,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:16:21,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:16:21,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:16:21,059 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:16:21,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:16:20" (1/3) ... [2018-10-24 12:16:21,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518200c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:16:21, skipping insertion in model container [2018-10-24 12:16:21,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:20" (2/3) ... [2018-10-24 12:16:21,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518200c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:16:21, skipping insertion in model container [2018-10-24 12:16:21,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:16:21" (3/3) ... [2018-10-24 12:16:21,063 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr_true-unreach-call_true-termination.i [2018-10-24 12:16:21,072 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:16:21,079 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:16:21,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:16:21,126 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:16:21,127 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:16:21,127 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:16:21,127 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:16:21,127 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:16:21,127 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:16:21,128 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:16:21,128 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:16:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-24 12:16:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 12:16:21,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:21,154 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:21,157 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:21,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash -745796184, now seen corresponding path program 1 times [2018-10-24 12:16:21,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:21,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:21,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:21,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:16:21,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:16:21,284 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:21,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:16:21,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:16:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:16:21,306 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-10-24 12:16:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:21,335 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2018-10-24 12:16:21,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:16:21,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-24 12:16:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:21,351 INFO L225 Difference]: With dead ends: 45 [2018-10-24 12:16:21,351 INFO L226 Difference]: Without dead ends: 19 [2018-10-24 12:16:21,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:16:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-24 12:16:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-24 12:16:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-24 12:16:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-24 12:16:21,391 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-10-24 12:16:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:21,392 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-24 12:16:21,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:16:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-24 12:16:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 12:16:21,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:21,393 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:21,394 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:21,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:21,394 INFO L82 PathProgramCache]: Analyzing trace with hash 800081396, now seen corresponding path program 1 times [2018-10-24 12:16:21,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:21,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:21,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:21,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:16:21,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:16:21,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:21,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:16:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:16:21,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:16:21,611 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2018-10-24 12:16:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:21,751 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-10-24 12:16:21,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:16:21,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-10-24 12:16:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:21,753 INFO L225 Difference]: With dead ends: 32 [2018-10-24 12:16:21,753 INFO L226 Difference]: Without dead ends: 26 [2018-10-24 12:16:21,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:16:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-24 12:16:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-24 12:16:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-24 12:16:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-24 12:16:21,761 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2018-10-24 12:16:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:21,762 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-24 12:16:21,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:16:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-24 12:16:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 12:16:21,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:21,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:21,764 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:21,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1097925811, now seen corresponding path program 1 times [2018-10-24 12:16:21,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:21,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:21,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:21,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-24 12:16:21,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:16:21,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:16:21,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:21,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:16:21,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:16:21,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:16:21,868 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-10-24 12:16:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:22,013 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-10-24 12:16:22,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:16:22,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-24 12:16:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:22,015 INFO L225 Difference]: With dead ends: 35 [2018-10-24 12:16:22,015 INFO L226 Difference]: Without dead ends: 29 [2018-10-24 12:16:22,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:16:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-24 12:16:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-10-24 12:16:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-24 12:16:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-10-24 12:16:22,020 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 21 [2018-10-24 12:16:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:22,021 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-10-24 12:16:22,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:16:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-10-24 12:16:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 12:16:22,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:22,022 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:22,022 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:22,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash -278190259, now seen corresponding path program 1 times [2018-10-24 12:16:22,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:22,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:22,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:22,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:22,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:22,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:22,215 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:16:22,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-10-24 12:16:22,218 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [26], [30], [32], [35], [37], [45], [49], [52], [54], [60], [61], [62], [64] [2018-10-24 12:16:22,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:16:22,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:16:22,607 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 12:16:22,609 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. [2018-10-24 12:16:22,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:22,646 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 12:16:22,763 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-10-24 12:16:22,763 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 12:16:22,992 INFO L413 sIntCurrentIteration]: We have 20 unified AI predicates [2018-10-24 12:16:22,993 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 12:16:22,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:16:22,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-24 12:16:22,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:22,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 12:16:22,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 12:16:22,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:16:22,996 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2018-10-24 12:16:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:23,877 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-24 12:16:23,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 12:16:23,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-10-24 12:16:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:23,879 INFO L225 Difference]: With dead ends: 49 [2018-10-24 12:16:23,879 INFO L226 Difference]: Without dead ends: 32 [2018-10-24 12:16:23,880 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-10-24 12:16:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-24 12:16:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2018-10-24 12:16:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-24 12:16:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-10-24 12:16:23,885 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-10-24 12:16:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:23,885 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-10-24 12:16:23,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 12:16:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-10-24 12:16:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 12:16:23,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:23,887 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:23,887 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:23,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash -597656530, now seen corresponding path program 1 times [2018-10-24 12:16:23,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:23,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:23,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:23,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:24,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:24,010 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:16:24,010 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-10-24 12:16:24,011 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [17], [26], [30], [32], [35], [37], [45], [49], [52], [54], [60], [61], [62], [64] [2018-10-24 12:16:24,013 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:16:24,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:16:24,221 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 12:16:24,221 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. [2018-10-24 12:16:24,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:24,253 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 12:16:24,289 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-10-24 12:16:24,290 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 12:16:24,420 INFO L413 sIntCurrentIteration]: We have 23 unified AI predicates [2018-10-24 12:16:24,421 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 12:16:24,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:16:24,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-24 12:16:24,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:24,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 12:16:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 12:16:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-24 12:16:24,423 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-10-24 12:16:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:24,863 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-10-24 12:16:24,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 12:16:24,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-10-24 12:16:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:24,866 INFO L225 Difference]: With dead ends: 25 [2018-10-24 12:16:24,867 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:16:24,867 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-10-24 12:16:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:16:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:16:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:16:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:16:24,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-10-24 12:16:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:24,869 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:16:24,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 12:16:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:16:24,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:16:24,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:16:25,174 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 14 [2018-10-24 12:16:25,176 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-24 12:16:25,176 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-24 12:16:25,177 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point L25(lines 10 28) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2018-10-24 12:16:25,177 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 24) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 20 24) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 10 28) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 14 17) no Hoare annotation was computed. [2018-10-24 12:16:25,178 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 10 28) no Hoare annotation was computed. [2018-10-24 12:16:25,179 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-10-24 12:16:25,179 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (<= main_~i~0 99) (and (<= main_~i~0 (+ main_~j~0 100)) (<= main_~j~0 main_~i~0) (<= (* 2 main_~i~0) 398))) [2018-10-24 12:16:25,180 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-10-24 12:16:25,180 INFO L425 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-10-24 12:16:25,180 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:16:25,180 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:16:25,180 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:16:25,181 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:16:25,181 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:16:25,181 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:16:25,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:16:25 BoogieIcfgContainer [2018-10-24 12:16:25,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:16:25,185 INFO L168 Benchmark]: Toolchain (without parser) took 4943.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -580.5 MB). Peak memory consumption was 160.3 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:25,186 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-24 12:16:25,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.47 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. [2018-10-24 12:16:25,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.53 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. [2018-10-24 12:16:25,189 INFO L168 Benchmark]: Boogie Preprocessor took 30.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:16:25,189 INFO L168 Benchmark]: RCFGBuilder took 447.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:25,190 INFO L168 Benchmark]: TraceAbstraction took 4128.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 201.7 MB). Peak memory consumption was 201.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:25,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 307.47 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 24.53 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 30.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 447.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4128.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 201.7 MB). Peak memory consumption was 201.7 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, 4.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 36 SDslu, 193 SDs, 0 SdLazy, 83 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s 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, 0.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9374307862679956 AbsIntWeakeningRatio, 0.3953488372093023 AbsIntAvgWeakeningVarsNumRemoved, 0.5581395348837209 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 23 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 3783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...