java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:40:31,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:40:31,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:40:31,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:40:31,964 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:40:31,965 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:40:31,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:40:31,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:40:31,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:40:31,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:40:31,973 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:40:31,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:40:31,974 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:40:31,975 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:40:31,976 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:40:31,977 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:40:31,978 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:40:31,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:40:31,982 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:40:31,983 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:40:31,985 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:40:31,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:40:31,989 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:40:31,989 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:40:31,989 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:40:31,990 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:40:31,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:40:31,992 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:40:31,993 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:40:31,994 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:40:31,994 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:40:31,995 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:40:31,995 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:40:31,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:40:31,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:40:31,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:40:31,998 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:40:32,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:40:32,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:40:32,016 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:40:32,016 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:40:32,016 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:40:32,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:40:32,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:40:32,017 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:40:32,017 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:40:32,017 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:40:32,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:40:32,017 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:40:32,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:40:32,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:40:32,018 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:40:32,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:40:32,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:40:32,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:40:32,019 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:40:32,019 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:40:32,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:40:32,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:40:32,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:40:32,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:40:32,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:40:32,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:40:32,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:40:32,021 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:40:32,021 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:40:32,021 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:40:32,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:40:32,022 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:40:32,022 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:40:32,022 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:40:32,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:40:32,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:40:32,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:40:32,117 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:40:32,117 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:40:32,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-11-07 15:40:32,186 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db555c09/396dc8901a0e4f4db0a0423e021b0eb4/FLAG62a1da5ac [2018-11-07 15:40:32,966 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:40:32,967 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-11-07 15:40:32,998 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db555c09/396dc8901a0e4f4db0a0423e021b0eb4/FLAG62a1da5ac [2018-11-07 15:40:33,017 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db555c09/396dc8901a0e4f4db0a0423e021b0eb4 [2018-11-07 15:40:33,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:40:33,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:40:33,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:40:33,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:40:33,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:40:33,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:33" (1/1) ... [2018-11-07 15:40:33,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:33, skipping insertion in model container [2018-11-07 15:40:33,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:33" (1/1) ... [2018-11-07 15:40:33,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:40:33,187 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:40:34,369 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:40:34,375 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:40:34,781 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:40:34,809 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:40:34,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34 WrapperNode [2018-11-07 15:40:34,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:40:34,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:40:34,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:40:34,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:40:34,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:40:35,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:40:35,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:40:35,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:40:35,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... [2018-11-07 15:40:35,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:40:35,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:40:35,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:40:35,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:40:35,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 15:40:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:40:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:40:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:40:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:40:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:40:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:40:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:40:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:40:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:40:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:40:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:40:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:40:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:40:43,980 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:40:43,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:43 BoogieIcfgContainer [2018-11-07 15:40:43,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:40:43,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:40:43,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:40:43,987 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:40:43,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:40:33" (1/3) ... [2018-11-07 15:40:43,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:43, skipping insertion in model container [2018-11-07 15:40:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:34" (2/3) ... [2018-11-07 15:40:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:43, skipping insertion in model container [2018-11-07 15:40:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:43" (3/3) ... [2018-11-07 15:40:43,991 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label13_true-unreach-call.c [2018-11-07 15:40:44,002 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:40:44,013 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:40:44,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:40:44,089 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:40:44,090 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:40:44,090 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:40:44,090 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:40:44,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:40:44,090 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:40:44,091 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:40:44,091 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:40:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:40:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 15:40:44,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:44,162 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:40:44,164 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:44,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894020, now seen corresponding path program 1 times [2018-11-07 15:40:44,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:44,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:44,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:44,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:44,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:44,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:44,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:40:44,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:44,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:40:44,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:40:44,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:40:44,656 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 15:40:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:40:56,172 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 15:40:56,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:40:56,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 15:40:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:40:56,216 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 15:40:56,216 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 15:40:56,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:40:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 15:40:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 15:40:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 15:40:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-11-07 15:40:56,522 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 52 [2018-11-07 15:40:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:40:56,522 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-11-07 15:40:56,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:40:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-11-07 15:40:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 15:40:56,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:56,531 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:40:56,531 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:56,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1512413558, now seen corresponding path program 1 times [2018-11-07 15:40:56,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:56,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:56,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:56,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:56,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:56,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:56,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:40:56,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:56,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:40:56,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:40:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:40:56,863 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-11-07 15:41:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:07,362 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-11-07 15:41:07,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:41:07,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-11-07 15:41:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:07,397 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 15:41:07,398 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 15:41:07,407 INFO L604 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 [2018-11-07 15:41:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 15:41:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 15:41:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 15:41:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-11-07 15:41:07,554 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 122 [2018-11-07 15:41:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:07,555 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-11-07 15:41:07,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:41:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-11-07 15:41:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 15:41:07,565 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:07,566 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:41:07,566 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:07,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash -25619309, now seen corresponding path program 1 times [2018-11-07 15:41:07,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:07,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:07,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:07,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:07,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:41:08,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:08,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:41:08,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:08,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:41:08,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:41:08,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:41:08,211 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-11-07 15:41:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:13,488 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-11-07 15:41:13,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:41:13,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 15:41:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:13,525 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 15:41:13,526 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 15:41:13,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:41:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 15:41:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 15:41:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 15:41:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-11-07 15:41:13,705 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 149 [2018-11-07 15:41:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:13,706 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-11-07 15:41:13,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:41:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-11-07 15:41:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 15:41:13,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:13,713 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:41:13,713 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:13,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2048725409, now seen corresponding path program 1 times [2018-11-07 15:41:13,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:13,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:13,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:13,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:13,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:41:13,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:13,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:41:13,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:13,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:41:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:41:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:41:13,910 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-11-07 15:41:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:19,188 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-11-07 15:41:19,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:41:19,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-11-07 15:41:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:19,212 INFO L225 Difference]: With dead ends: 13174 [2018-11-07 15:41:19,213 INFO L226 Difference]: Without dead ends: 6590 [2018-11-07 15:41:19,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:41:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-11-07 15:41:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-11-07 15:41:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 15:41:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-11-07 15:41:19,366 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 159 [2018-11-07 15:41:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:19,367 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-11-07 15:41:19,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:41:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-11-07 15:41:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-07 15:41:19,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:19,370 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 15:41:19,371 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:19,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1682119955, now seen corresponding path program 1 times [2018-11-07 15:41:19,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:19,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:19,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:19,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:19,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 15:41:19,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:19,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:41:19,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:19,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:41:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:41:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:41:19,629 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-11-07 15:41:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:26,918 INFO L93 Difference]: Finished difference Result 26000 states and 32594 transitions. [2018-11-07 15:41:26,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:41:26,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-11-07 15:41:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:26,979 INFO L225 Difference]: With dead ends: 26000 [2018-11-07 15:41:26,980 INFO L226 Difference]: Without dead ends: 19416 [2018-11-07 15:41:27,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:41:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19416 states. [2018-11-07 15:41:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19416 to 19416. [2018-11-07 15:41:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19416 states. [2018-11-07 15:41:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 22926 transitions. [2018-11-07 15:41:27,337 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 22926 transitions. Word has length 229 [2018-11-07 15:41:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:27,338 INFO L480 AbstractCegarLoop]: Abstraction has 19416 states and 22926 transitions. [2018-11-07 15:41:27,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:41:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 22926 transitions. [2018-11-07 15:41:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-11-07 15:41:27,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:27,350 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:41:27,350 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:27,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 782960051, now seen corresponding path program 1 times [2018-11-07 15:41:27,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:27,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:27,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:27,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:27,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 235 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 15:41:27,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:41:27,869 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:41:27,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-11-07 15:41:27,872 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], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2120], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:41:27,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:41:27,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:41:28,595 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:41:28,597 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:41:28,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:28,652 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:41:29,466 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 15:41:29,466 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:41:29,802 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-11-07 15:41:29,802 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:41:29,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:41:29,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:41:29,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:29,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:41:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:41:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:41:29,805 INFO L87 Difference]: Start difference. First operand 19416 states and 22926 transitions. Second operand 7 states. [2018-11-07 15:41:39,025 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:44:30,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:44:30,913 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:44:30,918 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:44:30,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:30 BoogieIcfgContainer [2018-11-07 15:44:30,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:44:30,919 INFO L168 Benchmark]: Toolchain (without parser) took 237889.10 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 15:44:30,921 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 15:44:30,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1777.49 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. [2018-11-07 15:44:30,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:30,927 INFO L168 Benchmark]: Boogie Preprocessor took 224.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:30,927 INFO L168 Benchmark]: RCFGBuilder took 8664.78 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: 512.7 MB). Peak memory consumption was 512.7 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:30,928 INFO L168 Benchmark]: TraceAbstraction took 226935.62 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 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 731.6 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:30,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1777.49 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 280.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 224.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8664.78 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: 512.7 MB). Peak memory consumption was 512.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226935.62 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 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 731.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (19416states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (14732 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 226.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 221.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2484 SDtfs, 10651 SDslu, 1059 SDs, 0 SdLazy, 21979 SolverSat, 5035 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 378 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19416occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978095491253387 AbsIntWeakeningRatio, 0.0935672514619883 AbsIntAvgWeakeningVarsNumRemoved, 18.48830409356725 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 75 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1054 NumberOfCodeBlocks, 1054 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1048 ConstructedInterpolants, 0 QuantifiedInterpolants, 574398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 599/669 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown