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/Problem18_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:39:10,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:39:10,962 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:39:10,978 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:39:10,978 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:39:10,979 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:39:10,980 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:39:10,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:39:10,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:39:10,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:39:10,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:39:10,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:39:10,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:39:10,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:39:10,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:39:10,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:39:10,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:39:10,994 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:39:10,999 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:39:11,004 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:39:11,005 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:39:11,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:39:11,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:39:11,024 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:39:11,024 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:39:11,025 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:39:11,026 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:39:11,026 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 [2018-10-27 03:39:11,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:39:11,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:39:11,057 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:39:11,058 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:39:11,058 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:39:11,058 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:39:11,058 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:39:11,059 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:39:11,059 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:39:11,059 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:39:11,059 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:39:11,059 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:39:11,060 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:39:11,061 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:39:11,061 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:39:11,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:39:11,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:39:11,061 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:39:11,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:39:11,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:39:11,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:39:11,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:39:11,063 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:39:11,063 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:39:11,063 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:39:11,063 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:39:11,063 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:39:11,064 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:39:11,064 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:39:11,064 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:39:11,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:39:11,064 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:39:11,065 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:39:11,067 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:39:11,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:39:11,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:39:11,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:39:11,155 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:39:11,156 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:39:11,157 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-10-27 03:39:11,224 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a8796c82/7454855e72ae47369641b1cc8c026436/FLAG7cf28444d [2018-10-27 03:39:11,948 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:39:11,949 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-10-27 03:39:11,976 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a8796c82/7454855e72ae47369641b1cc8c026436/FLAG7cf28444d [2018-10-27 03:39:11,993 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a8796c82/7454855e72ae47369641b1cc8c026436 [2018-10-27 03:39:12,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:39:12,007 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:39:12,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:39:12,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:39:12,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:39:12,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:11" (1/1) ... [2018-10-27 03:39:12,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542f3197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:12, skipping insertion in model container [2018-10-27 03:39:12,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:11" (1/1) ... [2018-10-27 03:39:12,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:39:12,159 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:39:13,240 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:39:13,245 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:39:13,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:39:13,727 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:39:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13 WrapperNode [2018-10-27 03:39:13,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:39:13,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:39:13,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:39:13,730 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:39:13,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:13,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:39:14,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:39:14,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:39:14,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:39:14,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (1/1) ... [2018-10-27 03:39:14,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:39:14,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:39:14,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:39:14,402 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:39:14,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (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 [2018-10-27 03:39:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:39:14,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:39:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:39:14,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:39:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:39:14,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:39:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:39:14,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:39:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:39:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:39:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:39:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:39:21,938 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:39:21,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:21 BoogieIcfgContainer [2018-10-27 03:39:21,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:39:21,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:39:21,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:39:21,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:39:21,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:39:11" (1/3) ... [2018-10-27 03:39:21,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:21, skipping insertion in model container [2018-10-27 03:39:21,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:13" (2/3) ... [2018-10-27 03:39:21,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:21, skipping insertion in model container [2018-10-27 03:39:21,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:21" (3/3) ... [2018-10-27 03:39:21,948 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05_true-unreach-call.c [2018-10-27 03:39:21,959 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:39:21,968 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:39:21,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:39:22,032 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:39:22,032 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:39:22,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:39:22,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:39:22,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:39:22,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:39:22,033 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:39:22,034 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:39:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:39:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-27 03:39:22,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:22,082 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] [2018-10-27 03:39:22,085 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:22,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1029134209, now seen corresponding path program 1 times [2018-10-27 03:39:22,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:22,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:22,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:22,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:22,613 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:39:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:22,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:22,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:39:22,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:22,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:39:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:39:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:39:22,784 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:39:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:28,990 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:39:28,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:39:28,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-10-27 03:39:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:29,041 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:39:29,041 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:39:29,051 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 [2018-10-27 03:39:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:39:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:39:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:39:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-27 03:39:29,216 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 45 [2018-10-27 03:39:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:29,217 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-27 03:39:29,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:39:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-27 03:39:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-27 03:39:29,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:29,228 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:39:29,228 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:29,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1760973291, now seen corresponding path program 1 times [2018-10-27 03:39:29,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:29,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:29,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:29,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:29,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:29,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:29,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:39:29,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:29,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:39:29,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:39:29,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:39:29,540 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-27 03:39:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:38,088 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-27 03:39:38,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:39:38,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-27 03:39:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:38,110 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 03:39:38,110 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 03:39:38,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:39:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 03:39:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 03:39:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 03:39:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-27 03:39:38,222 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 116 [2018-10-27 03:39:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:38,222 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-27 03:39:38,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:39:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-27 03:39:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 03:39:38,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:38,228 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:39:38,228 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:38,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1097208028, now seen corresponding path program 1 times [2018-10-27 03:39:38,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:38,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:38,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:38,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:38,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:38,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:38,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:39:38,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:38,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:39:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:39:38,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:39:38,457 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-27 03:39:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:50,728 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-27 03:39:50,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:39:50,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 03:39:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:50,795 INFO L225 Difference]: With dead ends: 11199 [2018-10-27 03:39:50,795 INFO L226 Difference]: Without dead ends: 8280 [2018-10-27 03:39:50,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:39:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-27 03:39:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-27 03:39:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-27 03:39:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-27 03:39:51,111 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 121 [2018-10-27 03:39:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:51,112 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-27 03:39:51,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:39:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-27 03:39:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 03:39:51,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:51,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:39:51,117 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:51,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:51,118 INFO L82 PathProgramCache]: Analyzing trace with hash 652626716, now seen corresponding path program 1 times [2018-10-27 03:39:51,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:51,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:51,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:51,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:51,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:51,390 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:39:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:51,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:39:51,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:39:51,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:39:51,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:39:51,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:39:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:39:51,544 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-27 03:39:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:39:57,970 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-27 03:39:57,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:39:57,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-27 03:39:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:39:58,059 INFO L225 Difference]: With dead ends: 20964 [2018-10-27 03:39:58,059 INFO L226 Difference]: Without dead ends: 12768 [2018-10-27 03:39:58,098 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 [2018-10-27 03:39:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-27 03:39:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-27 03:39:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-27 03:39:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-27 03:39:58,469 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 153 [2018-10-27 03:39:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:39:58,469 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-27 03:39:58,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:39:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-27 03:39:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 03:39:58,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:39:58,479 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 03:39:58,479 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:39:58,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:39:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash 504323522, now seen corresponding path program 1 times [2018-10-27 03:39:58,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:39:58,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:58,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:39:58,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:39:58,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:39:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:39:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:39:59,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:39:59,003 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:39:59,006 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-27 03:39:59,013 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:39:59,117 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:39:59,118 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:40:01,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:40:01,533 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:40:01,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:40:01,570 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:40:03,607 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.91% of their original sizes. [2018-10-27 03:40:03,607 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:40:03,968 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-10-27 03:40:03,968 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:40:03,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:40:03,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:40:03,970 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:40:03,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:40:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:40:03,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:40:03,972 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 7 states. [2018-10-27 03:40:10,113 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:41:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:41:42,212 INFO L93 Difference]: Finished difference Result 26119 states and 35031 transitions. [2018-10-27 03:41:42,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:41:42,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2018-10-27 03:41:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:41:42,256 INFO L225 Difference]: With dead ends: 26119 [2018-10-27 03:41:42,256 INFO L226 Difference]: Without dead ends: 13415 [2018-10-27 03:41:42,296 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:41:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2018-10-27 03:41:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13413. [2018-10-27 03:41:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2018-10-27 03:41:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 17845 transitions. [2018-10-27 03:41:42,571 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 17845 transitions. Word has length 232 [2018-10-27 03:41:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:41:42,571 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 17845 transitions. [2018-10-27 03:41:42,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:41:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 17845 transitions. [2018-10-27 03:41:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-27 03:41:42,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:41:42,586 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:41:42,587 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:41:42,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:41:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1582683708, now seen corresponding path program 1 times [2018-10-27 03:41:42,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:41:42,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:42,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:41:42,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:42,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:41:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:41:43,567 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-27 03:41:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 173 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:41:43,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:41:43,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:41:43,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 420 with the following transitions: [2018-10-27 03:41:43,909 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:41:43,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:41:43,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:41:55,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:41:55,172 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:41:55,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:41:55,180 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:41:58,294 INFO L227 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-27 03:41:58,295 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:42:24,585 INFO L415 sIntCurrentIteration]: We unified 418 AI predicates to 418 [2018-10-27 03:42:24,586 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:42:24,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:42:24,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-27 03:42:24,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:42:24,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 03:42:24,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 03:42:24,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 03:42:24,589 INFO L87 Difference]: Start difference. First operand 13413 states and 17845 transitions. Second operand 15 states. Received shutdown request... [2018-10-27 03:43:01,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 03:43:01,731 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:43:01,736 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:43:01,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:43:01 BoogieIcfgContainer [2018-10-27 03:43:01,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:43:01,737 INFO L168 Benchmark]: Toolchain (without parser) took 229731.83 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 1.6 GB in the end (delta: -230.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,738 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-27 03:43:01,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1720.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 454.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,741 INFO L168 Benchmark]: Boogie Preprocessor took 216.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,742 INFO L168 Benchmark]: RCFGBuilder took 7538.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.6 MB). Peak memory consumption was 499.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,742 INFO L168 Benchmark]: TraceAbstraction took 219795.97 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 37.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 03:43:01,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1720.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 454.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7538.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.6 MB). Peak memory consumption was 499.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219795.97 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 37.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (13413states) and FLOYD_HOARE automaton (currently 15 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (409 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1356 SDtfs, 11445 SDslu, 869 SDs, 0 SdLazy, 20192 SolverSat, 4478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 689 GetRequests, 588 SyntacticMatches, 56 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 27.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13413occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962344521113864 AbsIntWeakeningRatio, 0.08936825885978428 AbsIntAvgWeakeningVarsNumRemoved, 739.0616332819723 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 164 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1086 NumberOfCodeBlocks, 1086 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1080 ConstructedInterpolants, 0 QuantifiedInterpolants, 1826473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 446/651 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown