java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:58:11,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:58:11,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:58:11,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:58:11,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:58:11,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:58:11,097 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:58:11,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:58:11,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:58:11,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:58:11,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:58:11,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:58:11,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:58:11,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:58:11,106 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:58:11,107 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:58:11,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:58:11,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:58:11,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:58:11,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:58:11,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:58:11,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:58:11,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:58:11,125 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 00:58:11,125 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 00:58:11,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 00:58:11,129 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 00:58:11,130 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 00:58:11,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:58:11,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:58:11,164 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:58:11,164 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:58:11,164 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:58:11,164 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:58:11,165 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:58:11,165 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:58:11,165 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:58:11,165 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:58:11,165 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:58:11,166 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:58:11,167 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:58:11,167 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:58:11,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:58:11,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:58:11,168 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:58:11,168 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:58:11,168 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:58:11,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:58:11,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:58:11,169 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:58:11,169 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:58:11,169 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:58:11,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:58:11,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:58:11,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:58:11,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:58:11,172 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:58:11,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:58:11,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:58:11,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:58:11,173 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:58:11,173 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:58:11,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:58:11,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:58:11,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:58:11,258 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:58:11,259 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:58:11,259 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label49_true-unreach-call.c [2018-10-24 00:58:11,324 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/176073761/64da260089cf45ba92d83f5dfa5b593e/FLAG97aa4fd81 [2018-10-24 00:58:11,864 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:58:11,865 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label49_true-unreach-call.c [2018-10-24 00:58:11,892 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/176073761/64da260089cf45ba92d83f5dfa5b593e/FLAG97aa4fd81 [2018-10-24 00:58:11,918 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/176073761/64da260089cf45ba92d83f5dfa5b593e [2018-10-24 00:58:11,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:58:11,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:58:11,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:58:11,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:58:11,944 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:58:11,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:58:11" (1/1) ... [2018-10-24 00:58:11,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191d3d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:11, skipping insertion in model container [2018-10-24 00:58:11,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:58:11" (1/1) ... [2018-10-24 00:58:11,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:58:12,048 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:58:12,580 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:58:12,585 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:58:12,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:58:12,725 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:58:12,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12 WrapperNode [2018-10-24 00:58:12,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:58:12,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:58:12,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:58:12,727 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:58:12,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:12,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:12,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:58:12,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:58:12,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:58:12,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:58:12,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:12,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:12,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:12,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:13,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:13,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:13,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... [2018-10-24 00:58:13,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:58:13,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:58:13,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:58:13,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:58:13,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:58:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:58:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:58:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:58:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:58:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:58:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:58:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:58:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:58:16,671 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:58:16,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:58:16 BoogieIcfgContainer [2018-10-24 00:58:16,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:58:16,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:58:16,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:58:16,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:58:16,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:58:11" (1/3) ... [2018-10-24 00:58:16,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd3540b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:58:16, skipping insertion in model container [2018-10-24 00:58:16,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:12" (2/3) ... [2018-10-24 00:58:16,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd3540b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:58:16, skipping insertion in model container [2018-10-24 00:58:16,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:58:16" (3/3) ... [2018-10-24 00:58:16,682 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label49_true-unreach-call.c [2018-10-24 00:58:16,693 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:58:16,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:58:16,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:58:16,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:58:16,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:58:16,760 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:58:16,760 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:58:16,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:58:16,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:58:16,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:58:16,762 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:58:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:58:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 00:58:16,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:16,801 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] [2018-10-24 00:58:16,805 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:16,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash -654369111, now seen corresponding path program 1 times [2018-10-24 00:58:16,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:16,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:16,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:17,320 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:58:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:58:17,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:58:17,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 00:58:17,435 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:17,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 00:58:17,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 00:58:17,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:58:17,463 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 00:58:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:19,620 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 00:58:19,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 00:58:19,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-24 00:58:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:19,646 INFO L225 Difference]: With dead ends: 574 [2018-10-24 00:58:19,647 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 00:58:19,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:58:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 00:58:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 00:58:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:58:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 00:58:19,770 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 29 [2018-10-24 00:58:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:19,771 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 00:58:19,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 00:58:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 00:58:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 00:58:19,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:19,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-24 00:58:19,779 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:19,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 350526568, now seen corresponding path program 1 times [2018-10-24 00:58:19,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:19,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:19,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:19,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:19,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:58:20,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:58:20,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:58:20,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:20,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:58:20,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:58:20,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:58:20,214 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-24 00:58:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:21,957 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-24 00:58:21,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:58:21,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-24 00:58:21,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:21,963 INFO L225 Difference]: With dead ends: 867 [2018-10-24 00:58:21,963 INFO L226 Difference]: Without dead ends: 517 [2018-10-24 00:58:21,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:58:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-24 00:58:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-24 00:58:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-24 00:58:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-24 00:58:22,016 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 103 [2018-10-24 00:58:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:22,017 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-24 00:58:22,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:58:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-24 00:58:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 00:58:22,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:22,022 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-24 00:58:22,023 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:22,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash -781565036, now seen corresponding path program 1 times [2018-10-24 00:58:22,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:22,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:22,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:22,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:22,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:58:22,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:58:22,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:58:22,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:22,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:58:22,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:58:22,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:58:22,280 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 4 states. [2018-10-24 00:58:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:25,223 INFO L93 Difference]: Finished difference Result 1742 states and 2991 transitions. [2018-10-24 00:58:25,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:58:25,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-24 00:58:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:25,237 INFO L225 Difference]: With dead ends: 1742 [2018-10-24 00:58:25,237 INFO L226 Difference]: Without dead ends: 1240 [2018-10-24 00:58:25,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:58:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2018-10-24 00:58:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2018-10-24 00:58:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2018-10-24 00:58:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1869 transitions. [2018-10-24 00:58:25,317 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1869 transitions. Word has length 109 [2018-10-24 00:58:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:25,318 INFO L481 AbstractCegarLoop]: Abstraction has 1240 states and 1869 transitions. [2018-10-24 00:58:25,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:58:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1869 transitions. [2018-10-24 00:58:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 00:58:25,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:25,331 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:58:25,331 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:25,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:25,332 INFO L82 PathProgramCache]: Analyzing trace with hash -883752961, now seen corresponding path program 1 times [2018-10-24 00:58:25,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:25,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:25,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:25,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:25,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:25,719 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:58:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:58:26,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:58:26,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:58:26,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:26,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:58:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:58:26,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:58:26,165 INFO L87 Difference]: Start difference. First operand 1240 states and 1869 transitions. Second operand 6 states. [2018-10-24 00:58:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:28,462 INFO L93 Difference]: Finished difference Result 2759 states and 4120 transitions. [2018-10-24 00:58:28,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:58:28,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-10-24 00:58:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:28,476 INFO L225 Difference]: With dead ends: 2759 [2018-10-24 00:58:28,477 INFO L226 Difference]: Without dead ends: 1525 [2018-10-24 00:58:28,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:58:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2018-10-24 00:58:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1485. [2018-10-24 00:58:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-24 00:58:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2034 transitions. [2018-10-24 00:58:28,553 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2034 transitions. Word has length 166 [2018-10-24 00:58:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:28,553 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2034 transitions. [2018-10-24 00:58:28,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:58:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2034 transitions. [2018-10-24 00:58:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 00:58:28,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:28,559 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:58:28,559 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:28,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash 752941163, now seen corresponding path program 1 times [2018-10-24 00:58:28,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:28,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:28,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:28,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:28,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:28,871 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:58:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:58:29,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:58:29,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:58:29,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:29,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:58:29,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:58:29,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:58:29,305 INFO L87 Difference]: Start difference. First operand 1485 states and 2034 transitions. Second operand 6 states. [2018-10-24 00:58:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:30,819 INFO L93 Difference]: Finished difference Result 3547 states and 5008 transitions. [2018-10-24 00:58:30,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:58:30,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-24 00:58:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:30,834 INFO L225 Difference]: With dead ends: 3547 [2018-10-24 00:58:30,834 INFO L226 Difference]: Without dead ends: 2068 [2018-10-24 00:58:30,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:58:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2018-10-24 00:58:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2051. [2018-10-24 00:58:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2018-10-24 00:58:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2708 transitions. [2018-10-24 00:58:30,908 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2708 transitions. Word has length 172 [2018-10-24 00:58:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:30,909 INFO L481 AbstractCegarLoop]: Abstraction has 2051 states and 2708 transitions. [2018-10-24 00:58:30,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:58:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2708 transitions. [2018-10-24 00:58:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 00:58:30,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:30,917 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-24 00:58:30,918 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:30,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1320084340, now seen corresponding path program 1 times [2018-10-24 00:58:30,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:30,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:30,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:30,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:30,920 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:31,261 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:58:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 00:58:31,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:58:31,405 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:58:31,406 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-24 00:58:31,409 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:58:31,504 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:58:31,505 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:58:34,473 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:59:03,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:59:03,572 INFO L272 AbstractInterpreter]: Visited 145 different actions 840 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:59:03,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:03,588 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:59:07,324 INFO L232 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 73.27% of their original sizes. [2018-10-24 00:59:07,324 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:59:36,561 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:59:36,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:59:36,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [8] total 28 [2018-10-24 00:59:36,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:59:36,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 00:59:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 00:59:36,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-10-24 00:59:36,565 INFO L87 Difference]: Start difference. First operand 2051 states and 2708 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 01:01:57,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 01:01:57,504 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:01:57,509 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:01:57,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:01:57 BoogieIcfgContainer [2018-10-24 01:01:57,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:01:57,510 INFO L168 Benchmark]: Toolchain (without parser) took 225576.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 552.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:57,512 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:01:57,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.11 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:57,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:57,514 INFO L168 Benchmark]: Boogie Preprocessor took 138.20 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:01:57,515 INFO L168 Benchmark]: RCFGBuilder took 3610.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 119.0 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:57,516 INFO L168 Benchmark]: TraceAbstraction took 220835.80 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 478.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:57,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.11 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.20 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3610.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 119.0 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220835.80 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 478.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was constructing difference of abstraction (2051states) and FLOYD_HOARE automaton (currently 25 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 31 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 220.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 151.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 566 SDtfs, 4936 SDslu, 486 SDs, 0 SdLazy, 5243 SolverSat, 1009 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 208 SyntacticMatches, 33 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 32.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2051occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 32.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995186335403727 AbsIntWeakeningRatio, 0.10612244897959183 AbsIntAvgWeakeningVarsNumRemoved, 248.1469387755102 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 825 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 690651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 206/212 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown