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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:19,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:19,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:19,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:19,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:19,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:19,930 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:19,932 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:19,934 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:19,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:19,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:19,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:19,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:19,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:19,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:19,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:19,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:19,957 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:19,959 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:19,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:19,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:19,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:19,969 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:41:19,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 22:41:20,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:20,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:20,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:20,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:20,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:20,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:20,003 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:20,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:20,003 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:20,003 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:20,003 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:20,004 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:20,004 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:20,004 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:20,005 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:20,005 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:20,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:20,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:20,006 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:20,006 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:20,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:20,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:20,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:20,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:20,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:20,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:20,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:20,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:20,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:20,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:20,008 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:20,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:20,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:20,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:20,009 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:20,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:20,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:20,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:20,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:20,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:20,090 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:20,091 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-24 22:41:20,164 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25cdc55e0/f95a900cfee84e4da8c845c8f061ea92/FLAG9d9ba5eaa [2018-10-24 22:41:20,828 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:20,829 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-24 22:41:20,846 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25cdc55e0/f95a900cfee84e4da8c845c8f061ea92/FLAG9d9ba5eaa [2018-10-24 22:41:20,862 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25cdc55e0/f95a900cfee84e4da8c845c8f061ea92 [2018-10-24 22:41:20,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:20,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:20,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:20,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:20,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:20,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:20" (1/1) ... [2018-10-24 22:41:20,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7d78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:20, skipping insertion in model container [2018-10-24 22:41:20,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:20" (1/1) ... [2018-10-24 22:41:20,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:20,975 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:21,661 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:21,666 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:21,995 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:22,021 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:22,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22 WrapperNode [2018-10-24 22:41:22,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:22,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:22,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:22,023 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:22,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:22,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:22,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:22,329 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:22,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (1/1) ... [2018-10-24 22:41:22,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:22,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:22,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:22,457 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:22,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (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 22:41:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:27,235 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:27,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:27 BoogieIcfgContainer [2018-10-24 22:41:27,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:27,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:27,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:27,241 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:20" (1/3) ... [2018-10-24 22:41:27,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e53f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:27, skipping insertion in model container [2018-10-24 22:41:27,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:22" (2/3) ... [2018-10-24 22:41:27,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e53f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:27, skipping insertion in model container [2018-10-24 22:41:27,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:27" (3/3) ... [2018-10-24 22:41:27,247 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09_false-unreach-call.c [2018-10-24 22:41:27,259 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:27,274 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:27,292 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:27,341 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:27,341 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:27,341 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:27,341 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:27,342 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:27,342 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:27,342 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:27,342 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 22:41:27,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:27,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:27,394 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:27,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:27,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1379578932, now seen corresponding path program 1 times [2018-10-24 22:41:27,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:27,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:27,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:28,361 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:28,733 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 22:41:28,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:28,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:41:28,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:28,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:41:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:41:28,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:41:28,764 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 22:41:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:31,840 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-10-24 22:41:31,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:41:31,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-24 22:41:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:31,872 INFO L225 Difference]: With dead ends: 1054 [2018-10-24 22:41:31,872 INFO L226 Difference]: Without dead ends: 736 [2018-10-24 22:41:31,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:41:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-24 22:41:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-10-24 22:41:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-24 22:41:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-10-24 22:41:31,988 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 155 [2018-10-24 22:41:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:31,989 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-10-24 22:41:31,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:41:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-10-24 22:41:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 22:41:31,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:31,997 INFO L375 BasicCegarLoop]: trace histogram [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, 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 22:41:31,997 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:32,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -211363835, now seen corresponding path program 1 times [2018-10-24 22:41:32,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:32,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:32,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:32,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:32,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:32,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:32,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:32,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:32,304 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-10-24 22:41:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:35,342 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-10-24 22:41:35,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:35,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-24 22:41:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:35,357 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 22:41:35,358 INFO L226 Difference]: Without dead ends: 1068 [2018-10-24 22:41:35,361 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 22:41:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-10-24 22:41:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-10-24 22:41:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-10-24 22:41:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-10-24 22:41:35,475 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 165 [2018-10-24 22:41:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:35,475 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-10-24 22:41:35,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-10-24 22:41:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 22:41:35,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:35,483 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:35,483 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:35,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1423519688, now seen corresponding path program 1 times [2018-10-24 22:41:35,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:35,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:35,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:35,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:35,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:35,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:35,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:35,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:35,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:35,767 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-10-24 22:41:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:38,399 INFO L93 Difference]: Finished difference Result 2908 states and 5067 transitions. [2018-10-24 22:41:38,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:38,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-10-24 22:41:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:38,415 INFO L225 Difference]: With dead ends: 2908 [2018-10-24 22:41:38,416 INFO L226 Difference]: Without dead ends: 1889 [2018-10-24 22:41:38,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-10-24 22:41:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1869. [2018-10-24 22:41:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-10-24 22:41:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 3142 transitions. [2018-10-24 22:41:38,491 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 3142 transitions. Word has length 168 [2018-10-24 22:41:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:38,492 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 3142 transitions. [2018-10-24 22:41:38,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 3142 transitions. [2018-10-24 22:41:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 22:41:38,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:38,499 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:38,500 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:38,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash 634374037, now seen corresponding path program 1 times [2018-10-24 22:41:38,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:38,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:38,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:38,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:38,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:38,765 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:38,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:38,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:38,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:38,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:38,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:38,969 INFO L87 Difference]: Start difference. First operand 1869 states and 3142 transitions. Second operand 6 states. [2018-10-24 22:41:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:42,154 INFO L93 Difference]: Finished difference Result 5741 states and 10710 transitions. [2018-10-24 22:41:42,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:42,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-24 22:41:42,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:42,190 INFO L225 Difference]: With dead ends: 5741 [2018-10-24 22:41:42,191 INFO L226 Difference]: Without dead ends: 3878 [2018-10-24 22:41:42,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2018-10-24 22:41:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3764. [2018-10-24 22:41:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3764 states. [2018-10-24 22:41:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6536 transitions. [2018-10-24 22:41:42,369 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6536 transitions. Word has length 173 [2018-10-24 22:41:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:42,370 INFO L481 AbstractCegarLoop]: Abstraction has 3764 states and 6536 transitions. [2018-10-24 22:41:42,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6536 transitions. [2018-10-24 22:41:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 22:41:42,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:42,382 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:42,383 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:42,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash 279397812, now seen corresponding path program 1 times [2018-10-24 22:41:42,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:42,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:42,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:42,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:42,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:42,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:42,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 22:41:42,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:42,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:41:42,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:41:42,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:41:42,608 INFO L87 Difference]: Start difference. First operand 3764 states and 6536 transitions. Second operand 7 states. [2018-10-24 22:41:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:44,696 INFO L93 Difference]: Finished difference Result 11468 states and 22298 transitions. [2018-10-24 22:41:44,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:41:44,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2018-10-24 22:41:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:44,762 INFO L225 Difference]: With dead ends: 11468 [2018-10-24 22:41:44,763 INFO L226 Difference]: Without dead ends: 7710 [2018-10-24 22:41:44,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2018-10-24 22:41:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7523. [2018-10-24 22:41:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2018-10-24 22:41:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 13613 transitions. [2018-10-24 22:41:45,106 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 13613 transitions. Word has length 174 [2018-10-24 22:41:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:45,106 INFO L481 AbstractCegarLoop]: Abstraction has 7523 states and 13613 transitions. [2018-10-24 22:41:45,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:41:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 13613 transitions. [2018-10-24 22:41:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 22:41:45,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:45,130 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:45,130 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:45,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1038337502, now seen corresponding path program 1 times [2018-10-24 22:41:45,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:45,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:45,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:45,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:45,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:45,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:45,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:45,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:45,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:45,349 INFO L87 Difference]: Start difference. First operand 7523 states and 13613 transitions. Second operand 6 states. [2018-10-24 22:41:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:48,061 INFO L93 Difference]: Finished difference Result 23479 states and 46249 transitions. [2018-10-24 22:41:48,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:41:48,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-24 22:41:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:48,166 INFO L225 Difference]: With dead ends: 23479 [2018-10-24 22:41:48,166 INFO L226 Difference]: Without dead ends: 15962 [2018-10-24 22:41:48,217 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 22:41:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2018-10-24 22:41:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 15714. [2018-10-24 22:41:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15714 states. [2018-10-24 22:41:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 27871 transitions. [2018-10-24 22:41:48,791 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 27871 transitions. Word has length 180 [2018-10-24 22:41:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:48,791 INFO L481 AbstractCegarLoop]: Abstraction has 15714 states and 27871 transitions. [2018-10-24 22:41:48,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 27871 transitions. [2018-10-24 22:41:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 22:41:48,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:48,840 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:48,840 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:48,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1657030729, now seen corresponding path program 1 times [2018-10-24 22:41:48,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:48,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:48,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:49,108 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:49,478 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 22:41:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:41:49,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:41:49,810 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:41:49,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-10-24 22:41:49,815 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:41:49,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:41:49,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:41:50,998 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:41:51,000 INFO L272 AbstractInterpreter]: Visited 156 different actions 156 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:41:51,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:51,044 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:41:52,081 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 70.15% of their original sizes. [2018-10-24 22:41:52,081 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:41:52,700 INFO L413 sIntCurrentIteration]: We have 181 unified AI predicates [2018-10-24 22:41:52,700 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:41:52,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:41:52,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-10-24 22:41:52,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:52,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 22:41:52,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 22:41:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:41:52,704 INFO L87 Difference]: Start difference. First operand 15714 states and 27871 transitions. Second operand 18 states. [2018-10-24 22:43:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:20,773 INFO L93 Difference]: Finished difference Result 31632 states and 56068 transitions. [2018-10-24 22:43:20,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:43:20,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2018-10-24 22:43:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:20,855 INFO L225 Difference]: With dead ends: 31632 [2018-10-24 22:43:20,855 INFO L226 Difference]: Without dead ends: 15924 [2018-10-24 22:43:20,903 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-10-24 22:43:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2018-10-24 22:43:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15922. [2018-10-24 22:43:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15922 states. [2018-10-24 22:43:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 28089 transitions. [2018-10-24 22:43:21,307 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 28089 transitions. Word has length 182 [2018-10-24 22:43:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:21,308 INFO L481 AbstractCegarLoop]: Abstraction has 15922 states and 28089 transitions. [2018-10-24 22:43:21,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 22:43:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 28089 transitions. [2018-10-24 22:43:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 22:43:21,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:21,353 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:43:21,354 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:21,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2081143308, now seen corresponding path program 1 times [2018-10-24 22:43:21,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:21,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:21,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:21,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:21,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 22:43:21,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:21,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:21,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-24 22:43:21,831 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:21,843 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:21,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:23,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:43:23,229 INFO L272 AbstractInterpreter]: Visited 160 different actions 314 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:23,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:23,267 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:43:25,158 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 70.29% of their original sizes. [2018-10-24 22:43:25,159 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:25,792 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-24 22:43:25,792 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:25,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:25,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 22:43:25,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:25,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 22:43:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 22:43:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-10-24 22:43:25,794 INFO L87 Difference]: Start difference. First operand 15922 states and 28089 transitions. Second operand 23 states. [2018-10-24 22:45:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:25,020 INFO L93 Difference]: Finished difference Result 31844 states and 56313 transitions. [2018-10-24 22:45:25,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:45:25,020 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 194 [2018-10-24 22:45:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:25,095 INFO L225 Difference]: With dead ends: 31844 [2018-10-24 22:45:25,095 INFO L226 Difference]: Without dead ends: 16136 [2018-10-24 22:45:25,123 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2018-10-24 22:45:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16136 states. [2018-10-24 22:45:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16136 to 16133. [2018-10-24 22:45:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2018-10-24 22:45:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 28318 transitions. [2018-10-24 22:45:25,488 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 28318 transitions. Word has length 194 [2018-10-24 22:45:25,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:45:25,489 INFO L481 AbstractCegarLoop]: Abstraction has 16133 states and 28318 transitions. [2018-10-24 22:45:25,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 22:45:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 28318 transitions. [2018-10-24 22:45:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 22:45:25,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:45:25,532 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:45:25,532 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:45:25,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1733760794, now seen corresponding path program 1 times [2018-10-24 22:45:25,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:45:25,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:25,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:25,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:25,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:45:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:45:25,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:25,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:45:25,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-24 22:45:25,947 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:45:25,955 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:45:25,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 22:45:26,714 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 22:45:26,715 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 22:45:26,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 22:45:26,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:26,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:26,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:26,727 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:26,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:26,972 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 22:45:27,173 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:27,173 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:27,182 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:27,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:27 BoogieIcfgContainer [2018-10-24 22:45:27,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:27,183 INFO L168 Benchmark]: Toolchain (without parser) took 246308.94 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 208.4 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,185 INFO L168 Benchmark]: CDTParser took 0.18 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 22:45:27,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1145.65 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 305.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -901.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,190 INFO L168 Benchmark]: Boogie Preprocessor took 127.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,191 INFO L168 Benchmark]: RCFGBuilder took 4779.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.1 MB). Peak memory consumption was 267.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,192 INFO L168 Benchmark]: TraceAbstraction took 239945.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 744.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:27,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1145.65 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 305.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -901.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4779.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.1 MB). Peak memory consumption was 267.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239945.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 744.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1479]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1479). Cancelled while BasicCegarLoop was analyzing trace of length 196 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 239.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 224.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1653 SDtfs, 8306 SDslu, 3545 SDs, 0 SdLazy, 18831 SolverSat, 1237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 434 GetRequests, 351 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16133occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9986586444654675 AbsIntWeakeningRatio, 0.3502673796791444 AbsIntAvgWeakeningVarsNumRemoved, 28.093582887700535 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 827 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1391 NumberOfCodeBlocks, 1391 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1383 ConstructedInterpolants, 0 QuantifiedInterpolants, 586474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 147/161 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown