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/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:36:17,708 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:36:17,710 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:36:17,725 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:36:17,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:36:17,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:36:17,728 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:36:17,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:36:17,732 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:36:17,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:36:17,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:36:17,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:36:17,735 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:36:17,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:36:17,738 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:36:17,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:36:17,740 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:36:17,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:36:17,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:36:17,750 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:36:17,754 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:36:17,755 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:36:17,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:36:17,776 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 [2018-10-22 15:36:17,808 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:36:17,808 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:36:17,809 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:36:17,810 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:36:17,810 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:36:17,811 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:36:17,811 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:36:17,811 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:36:17,811 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:36:17,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:36:17,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:36:17,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:36:17,813 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:36:17,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:36:17,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:36:17,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:36:17,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:36:17,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:36:17,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:36:17,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:36:17,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:36:17,816 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:36:17,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:36:17,817 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:36:17,817 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:36:17,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:36:17,817 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:36:17,817 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:36:17,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:36:17,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:36:17,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:36:17,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:36:17,915 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:36:17,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-22 15:36:17,987 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31baa8b17/78007ebc0be1434d88b5f56cd00bbbc5/FLAGd4a02189a [2018-10-22 15:36:18,528 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:36:18,529 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-22 15:36:18,545 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31baa8b17/78007ebc0be1434d88b5f56cd00bbbc5/FLAGd4a02189a [2018-10-22 15:36:18,560 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31baa8b17/78007ebc0be1434d88b5f56cd00bbbc5 [2018-10-22 15:36:18,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:36:18,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:36:18,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:18,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:36:18,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:36:18,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:18,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e77e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18, skipping insertion in model container [2018-10-22 15:36:18,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:18,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:36:18,621 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:36:18,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:18,867 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:36:18,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:18,932 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:36:18,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18 WrapperNode [2018-10-22 15:36:18,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:18,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:18,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:36:18,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:36:18,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:18,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:18,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:18,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:36:18,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:36:18,985 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:36:18,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:18,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (1/1) ... [2018-10-22 15:36:19,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:36:19,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:36:19,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:36:19,021 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:36:19,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (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 [2018-10-22 15:36:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-22 15:36:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-22 15:36:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-22 15:36:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:36:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:36:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-22 15:36:19,762 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:36:19,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:19 BoogieIcfgContainer [2018-10-22 15:36:19,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:36:19,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:36:19,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:36:19,768 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:36:19,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:36:18" (1/3) ... [2018-10-22 15:36:19,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61243a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:19, skipping insertion in model container [2018-10-22 15:36:19,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:18" (2/3) ... [2018-10-22 15:36:19,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61243a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:19, skipping insertion in model container [2018-10-22 15:36:19,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:19" (3/3) ... [2018-10-22 15:36:19,772 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-22 15:36:19,783 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:36:19,793 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:36:19,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:36:19,846 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:36:19,847 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:36:19,847 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:36:19,847 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:36:19,848 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:36:19,848 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:36:19,848 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:36:19,848 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:36:19,848 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:36:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-10-22 15:36:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:36:19,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:19,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:19,876 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:19,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:19,883 INFO L82 PathProgramCache]: Analyzing trace with hash -763446896, now seen corresponding path program 1 times [2018-10-22 15:36:19,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:19,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:19,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:19,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:19,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:20,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:20,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:36:20,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:36:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:36:20,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:20,060 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-10-22 15:36:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:20,086 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2018-10-22 15:36:20,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:36:20,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-22 15:36:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:20,101 INFO L225 Difference]: With dead ends: 109 [2018-10-22 15:36:20,101 INFO L226 Difference]: Without dead ends: 46 [2018-10-22 15:36:20,106 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 [2018-10-22 15:36:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-22 15:36:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-22 15:36:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-22 15:36:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-10-22 15:36:20,150 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 22 [2018-10-22 15:36:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:20,150 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-10-22 15:36:20,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:36:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-10-22 15:36:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-22 15:36:20,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:20,152 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-22 15:36:20,152 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:20,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1942197264, now seen corresponding path program 1 times [2018-10-22 15:36:20,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:20,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:20,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:20,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:20,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:20,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:36:20,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:36:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:36:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:36:20,308 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 3 states. [2018-10-22 15:36:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:20,383 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-10-22 15:36:20,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:36:20,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-22 15:36:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:20,389 INFO L225 Difference]: With dead ends: 86 [2018-10-22 15:36:20,389 INFO L226 Difference]: Without dead ends: 47 [2018-10-22 15:36:20,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:36:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-22 15:36:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-22 15:36:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-22 15:36:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2018-10-22 15:36:20,405 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 29 [2018-10-22 15:36:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:20,405 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2018-10-22 15:36:20,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:36:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2018-10-22 15:36:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-22 15:36:20,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:20,409 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-10-22 15:36:20,409 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:20,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2106149261, now seen corresponding path program 1 times [2018-10-22 15:36:20,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:20,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:20,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:20,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:20,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:20,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:36:20,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:36:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:36:20,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:36:20,500 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 3 states. [2018-10-22 15:36:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:20,602 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2018-10-22 15:36:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:36:20,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-22 15:36:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:20,605 INFO L225 Difference]: With dead ends: 88 [2018-10-22 15:36:20,606 INFO L226 Difference]: Without dead ends: 48 [2018-10-22 15:36:20,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:36:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-22 15:36:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-22 15:36:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-22 15:36:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2018-10-22 15:36:20,613 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 31 [2018-10-22 15:36:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:20,613 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2018-10-22 15:36:20,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:36:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-10-22 15:36:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-22 15:36:20,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:20,615 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-10-22 15:36:20,615 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:20,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2106089679, now seen corresponding path program 1 times [2018-10-22 15:36:20,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:20,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:20,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:20,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:20,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:20,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 15:36:20,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:36:20,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:36:20,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:36:20,973 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 6 states. [2018-10-22 15:36:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:21,495 INFO L93 Difference]: Finished difference Result 163 states and 198 transitions. [2018-10-22 15:36:21,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:36:21,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-10-22 15:36:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:21,499 INFO L225 Difference]: With dead ends: 163 [2018-10-22 15:36:21,500 INFO L226 Difference]: Without dead ends: 93 [2018-10-22 15:36:21,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:36:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-22 15:36:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61. [2018-10-22 15:36:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-22 15:36:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-10-22 15:36:21,515 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 31 [2018-10-22 15:36:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:21,519 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-10-22 15:36:21,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:36:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-10-22 15:36:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-22 15:36:21,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:21,520 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-10-22 15:36:21,522 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:21,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1847924241, now seen corresponding path program 1 times [2018-10-22 15:36:21,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:21,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:21,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:21,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:21,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:21,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:36:21,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:36:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:36:21,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:21,659 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 5 states. [2018-10-22 15:36:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:22,050 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2018-10-22 15:36:22,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:36:22,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-10-22 15:36:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:22,060 INFO L225 Difference]: With dead ends: 142 [2018-10-22 15:36:22,060 INFO L226 Difference]: Without dead ends: 74 [2018-10-22 15:36:22,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:36:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-22 15:36:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2018-10-22 15:36:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-22 15:36:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2018-10-22 15:36:22,077 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 31 [2018-10-22 15:36:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:22,078 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2018-10-22 15:36:22,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:36:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2018-10-22 15:36:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-22 15:36:22,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:22,081 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2018-10-22 15:36:22,081 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:22,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1715606394, now seen corresponding path program 1 times [2018-10-22 15:36:22,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:22,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:22,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:22,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:22,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:36:22,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:22,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-22 15:36:22,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:36:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:36:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:36:22,363 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 7 states. [2018-10-22 15:36:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:22,745 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2018-10-22 15:36:22,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:36:22,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-10-22 15:36:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:22,752 INFO L225 Difference]: With dead ends: 185 [2018-10-22 15:36:22,752 INFO L226 Difference]: Without dead ends: 127 [2018-10-22 15:36:22,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:36:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-22 15:36:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2018-10-22 15:36:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-22 15:36:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2018-10-22 15:36:22,776 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 38 [2018-10-22 15:36:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:22,777 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2018-10-22 15:36:22,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:36:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2018-10-22 15:36:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-22 15:36:22,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:22,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2018-10-22 15:36:22,779 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:22,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:22,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1973771832, now seen corresponding path program 1 times [2018-10-22 15:36:22,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:22,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:22,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:22,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:22,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:36:22,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:22,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 15:36:22,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:36:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:36:22,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:36:22,999 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 6 states. [2018-10-22 15:36:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:23,292 INFO L93 Difference]: Finished difference Result 172 states and 209 transitions. [2018-10-22 15:36:23,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:36:23,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-10-22 15:36:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:23,300 INFO L225 Difference]: With dead ends: 172 [2018-10-22 15:36:23,301 INFO L226 Difference]: Without dead ends: 170 [2018-10-22 15:36:23,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:36:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-22 15:36:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 118. [2018-10-22 15:36:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-22 15:36:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2018-10-22 15:36:23,312 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 38 [2018-10-22 15:36:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:23,312 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2018-10-22 15:36:23,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:36:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2018-10-22 15:36:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-22 15:36:23,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:23,314 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:23,315 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:23,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1212099776, now seen corresponding path program 1 times [2018-10-22 15:36:23,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:23,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:23,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:23,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:36:23,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:23,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:36:23,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:36:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:36:23,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:36:23,372 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand 4 states. [2018-10-22 15:36:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:23,426 INFO L93 Difference]: Finished difference Result 175 states and 216 transitions. [2018-10-22 15:36:23,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:36:23,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-22 15:36:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:23,428 INFO L225 Difference]: With dead ends: 175 [2018-10-22 15:36:23,428 INFO L226 Difference]: Without dead ends: 126 [2018-10-22 15:36:23,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-22 15:36:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-22 15:36:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-22 15:36:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2018-10-22 15:36:23,438 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 42 [2018-10-22 15:36:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:23,438 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2018-10-22 15:36:23,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:36:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2018-10-22 15:36:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-22 15:36:23,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:23,440 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:23,440 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:23,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 988961475, now seen corresponding path program 1 times [2018-10-22 15:36:23,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:23,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:23,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:23,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:36:23,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:23,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:36:23,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:36:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:36:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:23,531 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand 5 states. [2018-10-22 15:36:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:23,622 INFO L93 Difference]: Finished difference Result 211 states and 256 transitions. [2018-10-22 15:36:23,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:36:23,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-10-22 15:36:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:23,624 INFO L225 Difference]: With dead ends: 211 [2018-10-22 15:36:23,625 INFO L226 Difference]: Without dead ends: 165 [2018-10-22 15:36:23,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:36:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-22 15:36:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2018-10-22 15:36:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-22 15:36:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2018-10-22 15:36:23,635 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 44 [2018-10-22 15:36:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:23,635 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2018-10-22 15:36:23,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:36:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2018-10-22 15:36:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-22 15:36:23,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:23,637 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:23,637 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:23,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143458, now seen corresponding path program 1 times [2018-10-22 15:36:23,638 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:23,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:23,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:23,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:23,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:23,892 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 [2018-10-22 15:36:23,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:23,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:24,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:24,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-22 15:36:24,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-22 15:36:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-22 15:36:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:36:24,021 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand 8 states. [2018-10-22 15:36:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:24,217 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2018-10-22 15:36:24,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:36:24,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-10-22 15:36:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:24,222 INFO L225 Difference]: With dead ends: 283 [2018-10-22 15:36:24,222 INFO L226 Difference]: Without dead ends: 176 [2018-10-22 15:36:24,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:36:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-22 15:36:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 138. [2018-10-22 15:36:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-22 15:36:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2018-10-22 15:36:24,231 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2018-10-22 15:36:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:24,232 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2018-10-22 15:36:24,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-22 15:36:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2018-10-22 15:36:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-22 15:36:24,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:24,233 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:24,234 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:24,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:24,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1640217351, now seen corresponding path program 2 times [2018-10-22 15:36:24,234 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:24,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:24,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:24,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:24,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:24,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:24,466 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 [2018-10-22 15:36:24,476 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:36:24,527 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:36:24,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:24,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:24,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:24,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-22 15:36:24,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-22 15:36:24,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-22 15:36:24,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:36:24,746 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 16 states. [2018-10-22 15:36:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:25,401 INFO L93 Difference]: Finished difference Result 310 states and 364 transitions. [2018-10-22 15:36:25,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:36:25,403 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2018-10-22 15:36:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:25,405 INFO L225 Difference]: With dead ends: 310 [2018-10-22 15:36:25,405 INFO L226 Difference]: Without dead ends: 242 [2018-10-22 15:36:25,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2018-10-22 15:36:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-22 15:36:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 184. [2018-10-22 15:36:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-22 15:36:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2018-10-22 15:36:25,425 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 53 [2018-10-22 15:36:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:25,425 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2018-10-22 15:36:25,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-22 15:36:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2018-10-22 15:36:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-22 15:36:25,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:25,427 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:25,427 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:25,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1640157769, now seen corresponding path program 1 times [2018-10-22 15:36:25,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:25,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:25,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:25,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:25,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:26,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:26,444 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 [2018-10-22 15:36:26,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:26,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:26,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:26,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-22 15:36:26,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-22 15:36:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-22 15:36:26,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-10-22 15:36:26,742 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand 15 states. [2018-10-22 15:36:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:27,505 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2018-10-22 15:36:27,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 15:36:27,506 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2018-10-22 15:36:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:27,508 INFO L225 Difference]: With dead ends: 285 [2018-10-22 15:36:27,509 INFO L226 Difference]: Without dead ends: 283 [2018-10-22 15:36:27,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2018-10-22 15:36:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-22 15:36:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 182. [2018-10-22 15:36:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-22 15:36:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2018-10-22 15:36:27,518 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 53 [2018-10-22 15:36:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:27,518 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2018-10-22 15:36:27,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-22 15:36:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2018-10-22 15:36:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-22 15:36:27,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:27,519 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:27,520 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:27,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:27,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1837101495, now seen corresponding path program 1 times [2018-10-22 15:36:27,520 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:27,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:27,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:27,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:27,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:27,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:27,746 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:27,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:27,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:28,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:28,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-22 15:36:28,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-22 15:36:28,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-22 15:36:28,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-22 15:36:28,093 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand 15 states. [2018-10-22 15:36:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:28,848 INFO L93 Difference]: Finished difference Result 309 states and 362 transitions. [2018-10-22 15:36:28,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 15:36:28,849 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2018-10-22 15:36:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:28,852 INFO L225 Difference]: With dead ends: 309 [2018-10-22 15:36:28,852 INFO L226 Difference]: Without dead ends: 307 [2018-10-22 15:36:28,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2018-10-22 15:36:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-22 15:36:28,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 212. [2018-10-22 15:36:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-22 15:36:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 251 transitions. [2018-10-22 15:36:28,863 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 251 transitions. Word has length 53 [2018-10-22 15:36:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:28,863 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 251 transitions. [2018-10-22 15:36:28,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-22 15:36:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 251 transitions. [2018-10-22 15:36:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-22 15:36:28,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:28,865 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:28,865 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:28,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1837161077, now seen corresponding path program 1 times [2018-10-22 15:36:28,866 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:28,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:28,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:28,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:28,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:28,918 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 15:36:28,964 WARN L1239 BoogieBacktranslator]: unknown boogie variable r_strncpy_#in~src [2018-10-22 15:36:28,967 WARN L1239 BoogieBacktranslator]: unknown boogie variable r_strncpy_#in~src [2018-10-22 15:36:28,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:36:28 BoogieIcfgContainer [2018-10-22 15:36:28,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:36:28,983 INFO L168 Benchmark]: Toolchain (without parser) took 10412.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -178.6 MB). Peak memory consumption was 570.0 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:28,985 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-22 15:36:28,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.84 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. [2018-10-22 15:36:28,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.57 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. [2018-10-22 15:36:28,989 INFO L168 Benchmark]: Boogie Preprocessor took 35.98 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. [2018-10-22 15:36:28,990 INFO L168 Benchmark]: RCFGBuilder took 742.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:28,991 INFO L168 Benchmark]: TraceAbstraction took 9217.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 593.6 MB). Peak memory consumption was 593.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:28,998 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 359.84 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 50.57 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 35.98 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 742.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9217.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 593.6 MB). Peak memory consumption was 593.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable r_strncpy_#in~src - GenericResult: Unfinished Backtranslation unknown boogie variable r_strncpy_#in~src * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] FCALL char A [2 + 2 + 4 +1]; [L76] FCALL A[2 + 2 + 4] = 0 [L77] CALL parse_expression_list (A) [L49] int start=0, i=-1, j=-1; [L50] FCALL char str2[2]; [L51] COND FALSE !(!str) [L53] i++ [L54] FCALL str[i] [L55] case 0: [L70] EXPR, FCALL str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] FCALL str[i] [L55] case 0: [L70] EXPR, FCALL str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] FCALL str[i] [L55] case 0: [L56] EXPR, FCALL str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] EXPR, FCALL str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L57] EXPR, FCALL str[start] [L57] COND FALSE !(str[start] == '"') [L58] j = i-1 [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] EXPR, FCALL str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] EXPR, FCALL str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L60] (0 < j) && (str[j] == '"') [L60] EXPR, FCALL str[j] [L60] (0 < j) && (str[j] == '"') [L60] COND FALSE !((0 < j) && (str[j] == '"')) [L61] COND TRUE start<=j [L62] FCALL r_strncpy(str2, str+start, j-start+1) [L63] CALL __VERIFIER_assert(j - start + 1 < 2) [L4] COND TRUE !(cond) VAL [r_strncpy_#in~src={35:0}] [L5] __VERIFIER_error() VAL [r_strncpy_#in~src={35:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 59 locations, 1 error locations. UNSAFE Result, 9.1s OverallTime, 14 OverallIterations, 3 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 895 SDtfs, 1749 SDslu, 2764 SDs, 0 SdLazy, 1441 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=13, 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 469 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 769 NumberOfCodeBlocks, 769 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 133950 SizeOfPredicates, 15 NumberOfNonLiveVariables, 461 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 16/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...