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/Problem19_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:04:39,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:04:39,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:04:39,719 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:04:39,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:04:39,721 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:04:39,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:04:39,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:04:39,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:04:39,726 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:04:39,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:04:39,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:04:39,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:04:39,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:04:39,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:04:39,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:04:39,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:04:39,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:04:39,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:04:39,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:04:39,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:04:39,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:04:39,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:04:39,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:04:39,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:04:39,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:04:39,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:04:39,762 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 [2018-10-23 23:04:39,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:04:39,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:04:39,785 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:04:39,785 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:04:39,785 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:04:39,785 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:04:39,786 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:04:39,786 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:04:39,786 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:04:39,786 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:04:39,786 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:04:39,787 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:04:39,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:04:39,788 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:04:39,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:04:39,788 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:04:39,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:04:39,788 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:04:39,789 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:04:39,789 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:04:39,789 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:04:39,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:04:39,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:04:39,790 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:04:39,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:04:39,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:04:39,790 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:04:39,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:04:39,791 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:04:39,791 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:04:39,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:04:39,791 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:04:39,791 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:04:39,792 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:04:39,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:04:39,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:04:39,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:04:39,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:04:39,894 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:04:39,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-23 23:04:39,957 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27ec5e050/358040922e444cbca82a217d381d9fe1/FLAG29779b147 [2018-10-23 23:04:40,889 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:04:40,891 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-23 23:04:40,938 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27ec5e050/358040922e444cbca82a217d381d9fe1/FLAG29779b147 [2018-10-23 23:04:40,954 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27ec5e050/358040922e444cbca82a217d381d9fe1 [2018-10-23 23:04:40,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:04:40,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:04:40,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:04:40,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:04:40,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:04:40,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:04:40" (1/1) ... [2018-10-23 23:04:40,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:40, skipping insertion in model container [2018-10-23 23:04:40,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:04:40" (1/1) ... [2018-10-23 23:04:40,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:04:41,227 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:04:43,151 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:04:43,157 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:04:44,327 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:04:44,384 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:04:44,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44 WrapperNode [2018-10-23 23:04:44,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:04:44,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:04:44,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:04:44,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:04:44,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:44,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:04:45,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:04:45,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:04:45,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:04:45,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (1/1) ... [2018-10-23 23:04:45,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:04:45,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:04:45,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:04:45,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:04:45,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (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 [2018-10-23 23:04:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:04:45,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:04:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-23 23:04:45,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-23 23:04:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-23 23:04:45,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-23 23:04:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 23:04:45,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 23:04:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 23:04:45,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 23:04:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 23:04:45,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 23:04:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:04:45,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:04:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:04:45,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:04:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:04:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:05:04,185 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:05:04,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:05:04 BoogieIcfgContainer [2018-10-23 23:05:04,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:05:04,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:05:04,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:05:04,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:05:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:04:40" (1/3) ... [2018-10-23 23:05:04,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29139693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:05:04, skipping insertion in model container [2018-10-23 23:05:04,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:44" (2/3) ... [2018-10-23 23:05:04,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29139693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:05:04, skipping insertion in model container [2018-10-23 23:05:04,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:05:04" (3/3) ... [2018-10-23 23:05:04,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label55_false-unreach-call.c [2018-10-23 23:05:04,203 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:05:04,218 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:05:04,235 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:05:04,298 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:05:04,298 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:05:04,298 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:05:04,298 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:05:04,298 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:05:04,299 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:05:04,299 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:05:04,299 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:05:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-23 23:05:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 23:05:04,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:05:04,375 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] [2018-10-23 23:05:04,378 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:05:04,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:05:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418350, now seen corresponding path program 1 times [2018-10-23 23:05:04,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:05:04,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:04,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:05:04,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:04,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:05:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:05:04,767 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:05:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:05:04,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:05:04,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:05:04,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:05:04,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:05:04,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:05:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:05:04,904 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-23 23:05:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:05:24,131 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-23 23:05:24,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:05:24,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-23 23:05:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:05:24,181 INFO L225 Difference]: With dead ends: 4998 [2018-10-23 23:05:24,182 INFO L226 Difference]: Without dead ends: 3218 [2018-10-23 23:05:24,196 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 [2018-10-23 23:05:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-23 23:05:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-23 23:05:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-23 23:05:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-23 23:05:24,403 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 21 [2018-10-23 23:05:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:05:24,403 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-23 23:05:24,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:05:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-23 23:05:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-23 23:05:24,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:05:24,413 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:05:24,413 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:05:24,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:05:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1828457188, now seen corresponding path program 1 times [2018-10-23 23:05:24,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:05:24,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:24,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:05:24,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:24,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:05:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:05:24,813 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:05:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:05:25,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:05:25,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:05:25,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:05:25,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:05:25,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:05:25,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:05:25,228 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-23 23:05:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:05:55,474 INFO L93 Difference]: Finished difference Result 10744 states and 19770 transitions. [2018-10-23 23:05:55,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:05:55,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-23 23:05:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:05:55,517 INFO L225 Difference]: With dead ends: 10744 [2018-10-23 23:05:55,517 INFO L226 Difference]: Without dead ends: 7535 [2018-10-23 23:05:55,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:05:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-23 23:05:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7498. [2018-10-23 23:05:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7498 states. [2018-10-23 23:05:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12452 transitions. [2018-10-23 23:05:55,744 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12452 transitions. Word has length 93 [2018-10-23 23:05:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:05:55,745 INFO L481 AbstractCegarLoop]: Abstraction has 7498 states and 12452 transitions. [2018-10-23 23:05:55,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:05:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12452 transitions. [2018-10-23 23:05:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 23:05:55,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:05:55,749 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:05:55,749 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:05:55,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:05:55,750 INFO L82 PathProgramCache]: Analyzing trace with hash -311823129, now seen corresponding path program 1 times [2018-10-23 23:05:55,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:05:55,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:55,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:05:55,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:55,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:05:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:05:56,017 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:05:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:05:56,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:05:56,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:05:56,059 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:05:56,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:05:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:05:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:05:56,061 INFO L87 Difference]: Start difference. First operand 7498 states and 12452 transitions. Second operand 6 states. [2018-10-23 23:06:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:23,529 INFO L93 Difference]: Finished difference Result 23905 states and 40028 transitions. [2018-10-23 23:06:23,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:06:23,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-23 23:06:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:23,625 INFO L225 Difference]: With dead ends: 23905 [2018-10-23 23:06:23,625 INFO L226 Difference]: Without dead ends: 16413 [2018-10-23 23:06:23,661 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 [2018-10-23 23:06:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16413 states. [2018-10-23 23:06:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16413 to 16240. [2018-10-23 23:06:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16240 states. [2018-10-23 23:06:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16240 states to 16240 states and 25387 transitions. [2018-10-23 23:06:24,130 INFO L78 Accepts]: Start accepts. Automaton has 16240 states and 25387 transitions. Word has length 95 [2018-10-23 23:06:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:24,131 INFO L481 AbstractCegarLoop]: Abstraction has 16240 states and 25387 transitions. [2018-10-23 23:06:24,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:06:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16240 states and 25387 transitions. [2018-10-23 23:06:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 23:06:24,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:24,145 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:06:24,145 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:24,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -390491480, now seen corresponding path program 1 times [2018-10-23 23:06:24,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:24,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:24,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:24,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:24,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:24,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:24,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:06:24,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:24,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:06:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:06:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:06:24,714 INFO L87 Difference]: Start difference. First operand 16240 states and 25387 transitions. Second operand 6 states. [2018-10-23 23:07:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:07:12,437 INFO L93 Difference]: Finished difference Result 61574 states and 99963 transitions. [2018-10-23 23:07:12,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:07:12,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-23 23:07:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:07:12,624 INFO L225 Difference]: With dead ends: 61574 [2018-10-23 23:07:12,625 INFO L226 Difference]: Without dead ends: 45340 [2018-10-23 23:07:12,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:07:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45340 states. [2018-10-23 23:07:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45340 to 45232. [2018-10-23 23:07:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45232 states. [2018-10-23 23:07:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45232 states to 45232 states and 66733 transitions. [2018-10-23 23:07:13,890 INFO L78 Accepts]: Start accepts. Automaton has 45232 states and 66733 transitions. Word has length 117 [2018-10-23 23:07:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:07:13,891 INFO L481 AbstractCegarLoop]: Abstraction has 45232 states and 66733 transitions. [2018-10-23 23:07:13,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:07:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 45232 states and 66733 transitions. [2018-10-23 23:07:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-23 23:07:13,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:07:13,894 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:07:13,894 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:07:13,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:07:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash 253376156, now seen corresponding path program 1 times [2018-10-23 23:07:13,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:07:13,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:13,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:07:13,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:13,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:07:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:07:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:07:14,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:07:14,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:07:14,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:07:14,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:07:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:07:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:07:14,196 INFO L87 Difference]: Start difference. First operand 45232 states and 66733 transitions. Second operand 5 states. [2018-10-23 23:07:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:07:48,891 INFO L93 Difference]: Finished difference Result 135673 states and 212448 transitions. [2018-10-23 23:07:48,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 23:07:48,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-10-23 23:07:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:07:49,208 INFO L225 Difference]: With dead ends: 135673 [2018-10-23 23:07:49,208 INFO L226 Difference]: Without dead ends: 90447 [2018-10-23 23:07:49,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 23:07:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90447 states. [2018-10-23 23:07:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90447 to 89712. [2018-10-23 23:07:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89712 states. [2018-10-23 23:07:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89712 states to 89712 states and 126257 transitions. [2018-10-23 23:07:51,034 INFO L78 Accepts]: Start accepts. Automaton has 89712 states and 126257 transitions. Word has length 126 [2018-10-23 23:07:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:07:51,034 INFO L481 AbstractCegarLoop]: Abstraction has 89712 states and 126257 transitions. [2018-10-23 23:07:51,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:07:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 89712 states and 126257 transitions. [2018-10-23 23:07:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-23 23:07:51,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:07:51,040 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:07:51,041 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:07:51,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:07:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1780754725, now seen corresponding path program 1 times [2018-10-23 23:07:51,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:07:51,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:51,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:07:51,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:51,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:07:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:07:51,345 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:07:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:07:52,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:07:52,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:07:52,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:07:52,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:07:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:07:52,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:07:52,434 INFO L87 Difference]: Start difference. First operand 89712 states and 126257 transitions. Second operand 6 states. [2018-10-23 23:08:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:21,661 INFO L93 Difference]: Finished difference Result 212527 states and 316648 transitions. [2018-10-23 23:08:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:08:21,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-23 23:08:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:22,188 INFO L225 Difference]: With dead ends: 212527 [2018-10-23 23:08:22,189 INFO L226 Difference]: Without dead ends: 122821 [2018-10-23 23:08:22,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:08:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122821 states. [2018-10-23 23:08:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122821 to 122453. [2018-10-23 23:08:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122453 states. [2018-10-23 23:08:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122453 states to 122453 states and 168206 transitions. [2018-10-23 23:08:25,410 INFO L78 Accepts]: Start accepts. Automaton has 122453 states and 168206 transitions. Word has length 154 [2018-10-23 23:08:25,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:25,411 INFO L481 AbstractCegarLoop]: Abstraction has 122453 states and 168206 transitions. [2018-10-23 23:08:25,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:08:25,411 INFO L276 IsEmpty]: Start isEmpty. Operand 122453 states and 168206 transitions. [2018-10-23 23:08:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 23:08:25,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:25,417 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:08:25,417 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:25,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash 722491994, now seen corresponding path program 1 times [2018-10-23 23:08:25,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:25,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:25,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:25,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:25,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:08:25,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:08:25,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:08:25,682 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-10-23 23:08:25,684 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5294], [5296], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-23 23:08:25,777 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:08:25,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:08:29,328 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 23:08:29,975 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:08:29,977 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 23:08:29,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:29,990 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:08:31,818 INFO L232 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 75.11% of their original sizes. [2018-10-23 23:08:31,819 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:08:32,234 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:08:32,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:08:32,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 23:08:32,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:32,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 23:08:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 23:08:32,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:08:32,237 INFO L87 Difference]: Start difference. First operand 122453 states and 168206 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 23:08:35,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:08:35,605 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:08:35,612 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:08:35,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:08:35 BoogieIcfgContainer [2018-10-23 23:08:35,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:08:35,614 INFO L168 Benchmark]: Toolchain (without parser) took 234647.78 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 1.5 GB in the end (delta: -131.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,615 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:08:35,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3416.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.9 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 757.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 MB). Free memory was 990.9 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,619 INFO L168 Benchmark]: Boogie Preprocessor took 439.45 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,621 INFO L168 Benchmark]: RCFGBuilder took 18602.71 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.8 MB). Peak memory consumption was 662.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,622 INFO L168 Benchmark]: TraceAbstraction took 211426.16 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 190.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:08:35,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3416.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.9 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 757.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 MB). Free memory was 990.9 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 439.45 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18602.71 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.8 MB). Peak memory consumption was 662.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211426.16 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 190.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (122453states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (233 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 193.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3664 SDtfs, 37354 SDslu, 4194 SDs, 0 SdLazy, 65180 SolverSat, 15507 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 167.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 244 GetRequests, 200 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122453occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9951349174385824 AbsIntWeakeningRatio, 0.14659685863874344 AbsIntAvgWeakeningVarsNumRemoved, 1022.9633507853404 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 1424 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 499990 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 103/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown