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/Problem16_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:58:26,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:58:26,865 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:58:26,877 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:58:26,877 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:58:26,879 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:58:26,880 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:58:26,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:58:26,883 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:58:26,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:58:26,885 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:58:26,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:58:26,887 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:58:26,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:58:26,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:58:26,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:58:26,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:58:26,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:58:26,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:58:26,908 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:58:26,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:58:26,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:58:26,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:58:26,932 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 21:58:26,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:58:26,960 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:58:26,960 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:58:26,962 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:58:26,962 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:58:26,962 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:58:26,963 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:58:26,963 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:58:26,963 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:58:26,963 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:58:26,964 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:58:26,964 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:58:26,965 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:58:26,965 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:58:26,966 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:58:26,966 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:58:26,967 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:58:26,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:58:26,967 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:58:26,967 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:58:26,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:58:26,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:58:26,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:58:26,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:58:26,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:58:26,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:58:26,970 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:58:26,970 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:58:26,970 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:58:26,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:58:26,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:58:26,971 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:58:26,971 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:58:26,972 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:58:27,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:58:27,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:58:27,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:58:27,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:58:27,057 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:58:27,058 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-10-24 21:58:27,124 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6fe385d4/aed49dc2cc7947eba18aa8ebe985e1e2/FLAG1e90aa372 [2018-10-24 21:58:27,803 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:58:27,805 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-10-24 21:58:27,827 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6fe385d4/aed49dc2cc7947eba18aa8ebe985e1e2/FLAG1e90aa372 [2018-10-24 21:58:27,845 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6fe385d4/aed49dc2cc7947eba18aa8ebe985e1e2 [2018-10-24 21:58:27,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:58:27,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:58:27,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:58:27,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:58:27,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:58:27,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:58:27" (1/1) ... [2018-10-24 21:58:27,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752afa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:27, skipping insertion in model container [2018-10-24 21:58:27,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:58:27" (1/1) ... [2018-10-24 21:58:27,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:58:27,968 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:58:28,874 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:58:28,879 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:58:29,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:58:29,175 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:58:29,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29 WrapperNode [2018-10-24 21:58:29,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:58:29,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:58:29,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:58:29,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:58:29,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:58:29,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:58:29,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:58:29,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:58:29,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (1/1) ... [2018-10-24 21:58:29,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:58:29,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:58:29,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:58:29,669 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:58:29,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (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 21:58:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:58:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:58:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:58:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:58:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:58:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:58:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:58:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:58:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:58:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:58:36,054 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:58:36,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:58:36 BoogieIcfgContainer [2018-10-24 21:58:36,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:58:36,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:58:36,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:58:36,060 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:58:36,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:58:27" (1/3) ... [2018-10-24 21:58:36,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e047f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:58:36, skipping insertion in model container [2018-10-24 21:58:36,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:29" (2/3) ... [2018-10-24 21:58:36,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e047f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:58:36, skipping insertion in model container [2018-10-24 21:58:36,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:58:36" (3/3) ... [2018-10-24 21:58:36,064 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label25_true-unreach-call.c [2018-10-24 21:58:36,076 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:58:36,085 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:58:36,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:58:36,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:58:36,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:58:36,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:58:36,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:58:36,147 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:58:36,147 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:58:36,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:58:36,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:58:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:58:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 21:58:36,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:58:36,191 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, 1, 1, 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 21:58:36,193 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:58:36,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash -154170549, now seen corresponding path program 1 times [2018-10-24 21:58:36,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:58:36,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:36,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:58:36,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:36,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:58:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:58:36,713 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:58:36,851 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 21:58:36,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:58:36,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:58:36,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:36,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:58:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:58:36,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:58:36,913 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:58:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:58:40,720 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:58:40,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:58:40,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-24 21:58:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:58:40,750 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:58:40,750 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:58:40,762 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 21:58:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:58:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:58:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:58:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-24 21:58:40,877 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 57 [2018-10-24 21:58:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:58:40,878 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-24 21:58:40,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:58:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-24 21:58:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 21:58:40,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:58:40,894 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, 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 21:58:40,895 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:58:40,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash -190456344, now seen corresponding path program 1 times [2018-10-24 21:58:40,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:58:40,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:40,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:58:40,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:40,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:58:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:58:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:58:41,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:58:41,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:58:41,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:41,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:58:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:58:41,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:58:41,472 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-24 21:58:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:58:48,673 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-24 21:58:48,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:58:48,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-24 21:58:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:58:48,699 INFO L225 Difference]: With dead ends: 2183 [2018-10-24 21:58:48,700 INFO L226 Difference]: Without dead ends: 1445 [2018-10-24 21:58:48,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:58:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-24 21:58:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-24 21:58:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-24 21:58:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-24 21:58:48,787 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 165 [2018-10-24 21:58:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:58:48,788 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-24 21:58:48,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:58:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-24 21:58:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 21:58:48,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:58:48,794 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, 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, 1, 1, 1] [2018-10-24 21:58:48,795 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:58:48,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2100649045, now seen corresponding path program 1 times [2018-10-24 21:58:48,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:58:48,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:48,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:58:48,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:48,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:58:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:58:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:58:49,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:58:49,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:58:49,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:49,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:58:49,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:58:49,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:58:49,099 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-24 21:58:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:58:53,281 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-24 21:58:53,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:58:53,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-10-24 21:58:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:58:53,306 INFO L225 Difference]: With dead ends: 3902 [2018-10-24 21:58:53,306 INFO L226 Difference]: Without dead ends: 2484 [2018-10-24 21:58:53,311 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 21:58:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-24 21:58:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-24 21:58:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-24 21:58:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-24 21:58:53,394 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 168 [2018-10-24 21:58:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:58:53,394 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-24 21:58:53,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:58:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-24 21:58:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-24 21:58:53,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:58:53,404 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, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:58:53,404 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:58:53,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash 778239368, now seen corresponding path program 1 times [2018-10-24 21:58:53,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:58:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:53,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:58:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:53,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:58:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:58:53,710 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:58:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 100 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:58:53,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:58:53,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:58:53,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-24 21:58:53,970 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:58:54,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:58:54,043 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:58:56,760 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:58:56,762 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:58:56,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:56,772 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:58:59,112 INFO L232 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 77.99% of their original sizes. [2018-10-24 21:58:59,114 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:58:59,336 INFO L413 sIntCurrentIteration]: We have 283 unified AI predicates [2018-10-24 21:58:59,337 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:58:59,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:58:59,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:58:59,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:59,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:58:59,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:58:59,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:58:59,340 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-24 21:59:02,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:59:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:55,268 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-24 21:59:55,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:55,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2018-10-24 21:59:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:55,283 INFO L225 Difference]: With dead ends: 5282 [2018-10-24 21:59:55,284 INFO L226 Difference]: Without dead ends: 2814 [2018-10-24 21:59:55,292 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:59:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-24 21:59:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-24 21:59:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-24 21:59:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-24 21:59:55,369 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 284 [2018-10-24 21:59:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:55,370 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-24 21:59:55,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:59:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-24 21:59:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-24 21:59:55,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:55,378 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:55,378 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:55,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash 160193259, now seen corresponding path program 1 times [2018-10-24 21:59:55,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:55,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:55,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:55,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:55,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 245 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 21:59:56,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:59:56,024 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:59:56,024 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-10-24 21:59:56,024 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:59:56,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:59:56,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:59:58,335 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:00:10,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:00:10,914 INFO L272 AbstractInterpreter]: Visited 125 different actions 481 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:00:10,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:10,924 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:00:17,134 INFO L232 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 77.63% of their original sizes. [2018-10-24 22:00:17,134 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:02:29,656 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:02:29,664 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:02:29,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:02:29 BoogieIcfgContainer [2018-10-24 22:02:29,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:02:29,666 INFO L168 Benchmark]: Toolchain (without parser) took 241808.51 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,667 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:02:29,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1315.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,672 INFO L168 Benchmark]: Boogie Preprocessor took 151.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,677 INFO L168 Benchmark]: RCFGBuilder took 6387.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.5 MB). Peak memory consumption was 258.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,678 INFO L168 Benchmark]: TraceAbstraction took 233608.45 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -583.9 MB). Peak memory consumption was 991.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:02:29,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1315.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6387.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.5 MB). Peak memory consumption was 258.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233608.45 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -583.9 MB). Peak memory consumption was 991.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was analyzing trace of length 377 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 71.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 736 SDtfs, 4400 SDslu, 557 SDs, 0 SdLazy, 6512 SolverSat, 2197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 309 GetRequests, 284 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962859565657899 AbsIntWeakeningRatio, 0.08814589665653495 AbsIntAvgWeakeningVarsNumRemoved, 506.13829787234044 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 470207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 205/311 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown