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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:29:07,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:29:07,756 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:29:07,768 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:29:07,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:29:07,770 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:29:07,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:29:07,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:29:07,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:29:07,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:29:07,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:29:07,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:29:07,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:29:07,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:29:07,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:29:07,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:29:07,784 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:29:07,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:29:07,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:29:07,789 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:29:07,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:29:07,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:29:07,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:29:07,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:29:07,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:29:07,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:29:07,834 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:29:07,834 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:29:07,835 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:29:07,835 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:29:07,835 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:29:07,836 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:29:07,836 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:29:07,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:29:07,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:29:07,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:29:07,837 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:29:07,837 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:29:07,837 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:29:07,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:29:07,838 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:29:07,838 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:29:07,838 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:29:07,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:29:07,838 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:29:07,838 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:29:07,839 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:29:07,839 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:29:07,839 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:29:07,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:29:07,839 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:29:07,840 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:29:07,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:29:07,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:29:07,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:29:07,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:29:07,904 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:29:07,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-10-26 22:29:07,962 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6531a40e8/51287ead4fe24d5ca33ddfd761355bb1/FLAGc5cf18896 [2018-10-26 22:29:08,418 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:29:08,421 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-10-26 22:29:08,428 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6531a40e8/51287ead4fe24d5ca33ddfd761355bb1/FLAGc5cf18896 [2018-10-26 22:29:08,454 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6531a40e8/51287ead4fe24d5ca33ddfd761355bb1 [2018-10-26 22:29:08,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:29:08,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:29:08,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:08,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:29:08,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:29:08,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f0772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08, skipping insertion in model container [2018-10-26 22:29:08,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:29:08,518 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:29:08,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:08,754 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:29:08,789 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:08,808 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:29:08,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08 WrapperNode [2018-10-26 22:29:08,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:08,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:08,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:29:08,811 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:29:08,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:08,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:29:08,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:29:08,855 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:29:08,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (1/1) ... [2018-10-26 22:29:08,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:29:08,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:29:08,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:29:08,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:29:08,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (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 [2018-10-26 22:29:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:29:09,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:29:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:29:09,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:29:09,465 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:29:09,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:09 BoogieIcfgContainer [2018-10-26 22:29:09,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:29:09,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:29:09,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:29:09,470 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:29:09,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:29:08" (1/3) ... [2018-10-26 22:29:09,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e5e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:09, skipping insertion in model container [2018-10-26 22:29:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:08" (2/3) ... [2018-10-26 22:29:09,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e5e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:09, skipping insertion in model container [2018-10-26 22:29:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:09" (3/3) ... [2018-10-26 22:29:09,474 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag_true-unreach-call_true-termination.i [2018-10-26 22:29:09,485 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:29:09,493 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:29:09,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:29:09,544 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:29:09,544 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:29:09,545 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:29:09,545 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:29:09,545 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:29:09,545 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:29:09,545 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:29:09,545 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:29:09,545 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:29:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-10-26 22:29:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 22:29:09,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:09,574 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:09,576 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:09,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash -568816948, now seen corresponding path program 1 times [2018-10-26 22:29:09,585 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:09,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:09,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:09,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:09,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:09,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:09,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:29:09,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:29:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:29:09,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:29:09,736 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-10-26 22:29:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:09,772 INFO L93 Difference]: Finished difference Result 86 states and 155 transitions. [2018-10-26 22:29:09,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:29:09,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-26 22:29:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:09,786 INFO L225 Difference]: With dead ends: 86 [2018-10-26 22:29:09,786 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 22:29:09,791 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 [2018-10-26 22:29:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 22:29:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 22:29:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 22:29:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2018-10-26 22:29:09,842 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 9 [2018-10-26 22:29:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:09,842 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2018-10-26 22:29:09,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:29:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2018-10-26 22:29:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 22:29:09,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:09,844 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:09,844 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:09,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:09,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1309371040, now seen corresponding path program 1 times [2018-10-26 22:29:09,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:09,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:09,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:09,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:09,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:09,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:09,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:29:09,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:29:09,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:29:09,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:29:09,945 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 5 states. [2018-10-26 22:29:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:10,435 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2018-10-26 22:29:10,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:29:10,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-26 22:29:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:10,437 INFO L225 Difference]: With dead ends: 47 [2018-10-26 22:29:10,438 INFO L226 Difference]: Without dead ends: 45 [2018-10-26 22:29:10,439 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 [2018-10-26 22:29:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-26 22:29:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-26 22:29:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 22:29:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2018-10-26 22:29:10,454 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 11 [2018-10-26 22:29:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:10,454 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2018-10-26 22:29:10,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:29:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2018-10-26 22:29:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 22:29:10,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:10,456 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:10,456 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:10,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash -891836445, now seen corresponding path program 1 times [2018-10-26 22:29:10,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:10,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:10,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:10,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:10,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:10,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:10,670 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:10,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:10,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:10,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:10,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2018-10-26 22:29:10,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:29:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:29:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:29:10,809 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 10 states. [2018-10-26 22:29:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:11,667 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2018-10-26 22:29:11,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:29:11,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-10-26 22:29:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:11,674 INFO L225 Difference]: With dead ends: 51 [2018-10-26 22:29:11,675 INFO L226 Difference]: Without dead ends: 39 [2018-10-26 22:29:11,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:29:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-26 22:29:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-26 22:29:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-26 22:29:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-10-26 22:29:11,686 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 16 [2018-10-26 22:29:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:11,686 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-10-26 22:29:11,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:29:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-10-26 22:29:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 22:29:11,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:11,688 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:11,688 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:11,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:11,688 INFO L82 PathProgramCache]: Analyzing trace with hash -503473820, now seen corresponding path program 1 times [2018-10-26 22:29:11,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:11,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:11,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:11,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:11,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:11,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:11,850 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:11,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:11,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:11,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:11,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-10-26 22:29:11,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 22:29:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 22:29:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-26 22:29:11,982 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 11 states. [2018-10-26 22:29:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:12,694 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2018-10-26 22:29:12,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 22:29:12,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-10-26 22:29:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:12,699 INFO L225 Difference]: With dead ends: 83 [2018-10-26 22:29:12,699 INFO L226 Difference]: Without dead ends: 79 [2018-10-26 22:29:12,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:29:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-26 22:29:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-10-26 22:29:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-26 22:29:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2018-10-26 22:29:12,719 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 17 [2018-10-26 22:29:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:12,720 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2018-10-26 22:29:12,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:29:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2018-10-26 22:29:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 22:29:12,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:12,723 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:12,723 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:12,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -468960521, now seen corresponding path program 1 times [2018-10-26 22:29:12,724 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:12,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:12,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 22:29:12,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:12,883 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:12,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:12,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 22:29:13,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:13,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 11 [2018-10-26 22:29:13,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 22:29:13,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 22:29:13,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-10-26 22:29:13,046 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand 11 states. [2018-10-26 22:29:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:13,532 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-10-26 22:29:13,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:29:13,532 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2018-10-26 22:29:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:13,533 INFO L225 Difference]: With dead ends: 79 [2018-10-26 22:29:13,533 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:29:13,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:29:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:29:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:29:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:29:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:29:13,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-10-26 22:29:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:13,537 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:29:13,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:29:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:29:13,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:29:13,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:29:13,946 INFO L421 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,947 INFO L428 ceAbstractionStarter]: At program point L60(lines 11 63) the Hoare annotation is: true [2018-10-26 22:29:13,947 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,947 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,947 INFO L425 ceAbstractionStarter]: For program point L56(line 56) no Hoare annotation was computed. [2018-10-26 22:29:13,947 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 54) no Hoare annotation was computed. [2018-10-26 22:29:13,947 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-10-26 22:29:13,948 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-26 22:29:13,948 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-10-26 22:29:13,948 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 54) no Hoare annotation was computed. [2018-10-26 22:29:13,948 INFO L421 ceAbstractionStarter]: At program point L40-1(lines 40 54) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,948 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,948 INFO L421 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,948 INFO L425 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-10-26 22:29:13,948 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-26 22:29:13,949 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-26 22:29:13,949 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:29:13,949 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-26 22:29:13,949 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-10-26 22:29:13,949 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,949 INFO L421 ceAbstractionStarter]: At program point L20-1(line 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,949 INFO L425 ceAbstractionStarter]: For program point L45(lines 45 49) no Hoare annotation was computed. [2018-10-26 22:29:13,950 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-10-26 22:29:13,950 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:29:13,950 INFO L428 ceAbstractionStarter]: At program point L62(lines 10 63) the Hoare annotation is: true [2018-10-26 22:29:13,950 INFO L421 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,950 INFO L421 ceAbstractionStarter]: At program point L46-1(line 46) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,950 INFO L421 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,951 INFO L421 ceAbstractionStarter]: At program point L42-1(line 42) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,951 INFO L425 ceAbstractionStarter]: For program point L34-1(lines 34 58) no Hoare annotation was computed. [2018-10-26 22:29:13,951 INFO L421 ceAbstractionStarter]: At program point L34-3(lines 34 58) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,951 INFO L421 ceAbstractionStarter]: At program point L34-4(lines 34 58) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,951 INFO L421 ceAbstractionStarter]: At program point L59(line 59) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,952 INFO L421 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,952 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 30) no Hoare annotation was computed. [2018-10-26 22:29:13,952 INFO L421 ceAbstractionStarter]: At program point L18-3(lines 18 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2018-10-26 22:29:13,952 INFO L421 ceAbstractionStarter]: At program point L18-4(lines 18 30) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~t~0) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0)) [2018-10-26 22:29:13,952 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-10-26 22:29:13,952 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 39) no Hoare annotation was computed. [2018-10-26 22:29:13,953 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 22:29:13,953 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 22:29:13,953 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 22:29:13,953 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 22:29:13,953 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 22:29:13,954 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-26 22:29:13,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:29:13 BoogieIcfgContainer [2018-10-26 22:29:13,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:29:13,971 INFO L168 Benchmark]: Toolchain (without parser) took 5503.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -491.7 MB). Peak memory consumption was 245.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:29:13,973 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-26 22:29:13,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.79 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. [2018-10-26 22:29:13,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.85 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. [2018-10-26 22:29:13,976 INFO L168 Benchmark]: Boogie Preprocessor took 42.70 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. [2018-10-26 22:29:13,976 INFO L168 Benchmark]: RCFGBuilder took 566.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:29:13,977 INFO L168 Benchmark]: TraceAbstraction took 4504.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.2 MB). Peak memory consumption was 271.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:29:13,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 339.79 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 43.85 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 42.70 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 566.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4504.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.2 MB). Peak memory consumption was 271.2 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 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (t <= tagbuf_len && 1 <= tagbuf_len) && 0 <= t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 204 SDtfs, 157 SDslu, 528 SDs, 0 SdLazy, 634 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 66 PreInvPairs, 101 NumberOfFragments, 154 HoareAnnotationTreeSize, 66 FomulaSimplifications, 124 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 11890 SizeOfPredicates, 10 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 77/108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...