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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:37:47,971 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:37:47,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:37:47,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:37:47,986 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:37:47,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:37:47,988 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:37:47,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:37:47,992 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:37:47,993 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:37:47,994 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:37:47,994 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:37:47,995 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:37:47,996 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:37:47,997 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:37:47,997 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:37:47,998 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:37:48,000 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:37:48,002 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:37:48,004 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:37:48,005 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:37:48,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:37:48,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:37:48,009 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:37:48,009 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:37:48,010 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:37:48,011 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:37:48,012 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:37:48,013 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:37:48,014 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:37:48,014 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:37:48,015 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:37:48,015 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:37:48,015 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:37:48,016 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:37:48,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:37:48,017 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:37:48,033 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:37:48,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:37:48,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:37:48,034 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:37:48,034 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:37:48,034 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:37:48,035 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:37:48,035 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:37:48,035 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:37:48,035 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:37:48,035 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:37:48,036 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:37:48,036 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:37:48,036 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:37:48,037 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:37:48,037 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:37:48,037 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:37:48,037 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:37:48,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:37:48,038 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:37:48,038 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:37:48,038 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:37:48,038 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:37:48,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:37:48,039 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:37:48,039 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:37:48,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:37:48,039 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:37:48,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:37:48,040 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:37:48,040 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:37:48,040 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:37:48,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:37:48,040 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:37:48,041 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:37:48,041 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:37:48,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:37:48,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:37:48,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:37:48,115 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:37:48,115 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:37:48,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-07 09:37:48,175 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c378b67d9/d1f797b3883a4285ab881cfb24748fb8/FLAG407403e11 [2018-11-07 09:37:48,900 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:37:48,901 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-07 09:37:48,928 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c378b67d9/d1f797b3883a4285ab881cfb24748fb8/FLAG407403e11 [2018-11-07 09:37:48,942 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c378b67d9/d1f797b3883a4285ab881cfb24748fb8 [2018-11-07 09:37:48,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:37:48,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:37:48,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:37:48,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:37:48,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:37:48,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:37:48" (1/1) ... [2018-11-07 09:37:48,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa20d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:48, skipping insertion in model container [2018-11-07 09:37:48,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:37:48" (1/1) ... [2018-11-07 09:37:48,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:37:49,108 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:37:50,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:37:50,169 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:37:50,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:37:50,678 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:37:50,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50 WrapperNode [2018-11-07 09:37:50,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:37:50,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:37:50,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:37:50,680 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:37:50,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:50,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:50,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:37:50,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:37:50,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:37:50,992 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:37:51,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (1/1) ... [2018-11-07 09:37:51,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:37:51,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:37:51,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:37:51,252 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:37:51,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (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 09:37:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:37:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:37:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:37:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:37:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:37:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:37:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:37:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:37:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:37:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:37:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:37:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:37:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:37:59,626 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:37:59,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:37:59 BoogieIcfgContainer [2018-11-07 09:37:59,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:37:59,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:37:59,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:37:59,631 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:37:59,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:37:48" (1/3) ... [2018-11-07 09:37:59,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6847e2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:37:59, skipping insertion in model container [2018-11-07 09:37:59,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:37:50" (2/3) ... [2018-11-07 09:37:59,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6847e2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:37:59, skipping insertion in model container [2018-11-07 09:37:59,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:37:59" (3/3) ... [2018-11-07 09:37:59,634 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label24_true-unreach-call.c [2018-11-07 09:37:59,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:37:59,653 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:37:59,671 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:37:59,717 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:37:59,717 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:37:59,717 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:37:59,717 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:37:59,718 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:37:59,718 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:37:59,718 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:37:59,718 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:37:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:37:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 09:37:59,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:59,770 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:37:59,772 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:59,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash -926912268, now seen corresponding path program 1 times [2018-11-07 09:37:59,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:59,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:59,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:59,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:59,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:00,256 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:38:00,384 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 09:38:00,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:00,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:38:00,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:00,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:38:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:38:00,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:38:00,413 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:38:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:06,858 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:38:06,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:38:06,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-07 09:38:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:06,894 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:38:06,894 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:38:06,912 INFO L604 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 [2018-11-07 09:38:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:38:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:38:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:38:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-07 09:38:07,102 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 58 [2018-11-07 09:38:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:07,103 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-07 09:38:07,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:38:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-07 09:38:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 09:38:07,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:07,119 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:07,119 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:07,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:07,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1481566434, now seen corresponding path program 1 times [2018-11-07 09:38:07,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:07,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:07,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:07,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:07,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:07,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:07,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:07,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:07,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:07,396 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-07 09:38:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:15,716 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-07 09:38:15,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:15,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-11-07 09:38:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:15,737 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 09:38:15,738 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 09:38:15,743 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 09:38:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 09:38:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 09:38:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 09:38:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-07 09:38:15,832 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 128 [2018-11-07 09:38:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:15,833 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-07 09:38:15,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-07 09:38:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 09:38:15,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:15,838 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:15,838 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:15,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash -74605249, now seen corresponding path program 1 times [2018-11-07 09:38:15,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:15,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:15,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:15,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:15,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:16,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:16,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:16,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:16,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:16,063 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-07 09:38:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:21,568 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-07 09:38:21,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:21,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 09:38:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:21,600 INFO L225 Difference]: With dead ends: 7345 [2018-11-07 09:38:21,601 INFO L226 Difference]: Without dead ends: 4426 [2018-11-07 09:38:21,609 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 09:38:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-07 09:38:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-07 09:38:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-07 09:38:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-07 09:38:21,756 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 129 [2018-11-07 09:38:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:21,756 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-07 09:38:21,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-07 09:38:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 09:38:21,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:21,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:21,763 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:21,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash 780877979, now seen corresponding path program 1 times [2018-11-07 09:38:21,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:21,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:21,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:21,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:21,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:21,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:21,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:21,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:21,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:21,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:21,941 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-07 09:38:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:30,549 INFO L93 Difference]: Finished difference Result 14803 states and 21960 transitions. [2018-11-07 09:38:30,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:38:30,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-11-07 09:38:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:30,598 INFO L225 Difference]: With dead ends: 14803 [2018-11-07 09:38:30,599 INFO L226 Difference]: Without dead ends: 10418 [2018-11-07 09:38:30,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:38:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10418 states. [2018-11-07 09:38:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10418 to 10271. [2018-11-07 09:38:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10271 states. [2018-11-07 09:38:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 13608 transitions. [2018-11-07 09:38:30,874 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 13608 transitions. Word has length 131 [2018-11-07 09:38:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:30,875 INFO L480 AbstractCegarLoop]: Abstraction has 10271 states and 13608 transitions. [2018-11-07 09:38:30,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 13608 transitions. [2018-11-07 09:38:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 09:38:30,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:30,879 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:30,879 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:30,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:30,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1032324202, now seen corresponding path program 1 times [2018-11-07 09:38:30,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:30,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:30,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:30,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:30,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:31,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:31,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:31,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:31,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:31,158 INFO L87 Difference]: Start difference. First operand 10271 states and 13608 transitions. Second operand 4 states. [2018-11-07 09:38:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:38,484 INFO L93 Difference]: Finished difference Result 38940 states and 53275 transitions. [2018-11-07 09:38:38,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:38,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-11-07 09:38:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:38,604 INFO L225 Difference]: With dead ends: 38940 [2018-11-07 09:38:38,605 INFO L226 Difference]: Without dead ends: 28675 [2018-11-07 09:38:38,663 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 09:38:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28675 states. [2018-11-07 09:38:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28675 to 28662. [2018-11-07 09:38:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28662 states. [2018-11-07 09:38:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28662 states to 28662 states and 36108 transitions. [2018-11-07 09:38:39,274 INFO L78 Accepts]: Start accepts. Automaton has 28662 states and 36108 transitions. Word has length 156 [2018-11-07 09:38:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:39,276 INFO L480 AbstractCegarLoop]: Abstraction has 28662 states and 36108 transitions. [2018-11-07 09:38:39,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 28662 states and 36108 transitions. [2018-11-07 09:38:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-07 09:38:39,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:39,301 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:39,301 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:39,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -351976915, now seen corresponding path program 1 times [2018-11-07 09:38:39,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:39,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:39,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 155 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:38:39,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:38:39,736 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:38:39,737 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-11-07 09:38:39,740 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], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [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], [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], [2356], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:38:39,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:38:39,814 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:38:40,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:38:40,483 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:38:40,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:40,527 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:38:41,127 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 77.94% of their original sizes. [2018-11-07 09:38:41,127 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:38:41,277 INFO L415 sIntCurrentIteration]: We unified 294 AI predicates to 294 [2018-11-07 09:38:41,278 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:38:41,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:38:41,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 09:38:41,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:41,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:41,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:41,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:41,281 INFO L87 Difference]: Start difference. First operand 28662 states and 36108 transitions. Second operand 6 states. [2018-11-07 09:39:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:27,566 INFO L93 Difference]: Finished difference Result 58023 states and 72984 transitions. [2018-11-07 09:39:27,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:39:27,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2018-11-07 09:39:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:27,658 INFO L225 Difference]: With dead ends: 58023 [2018-11-07 09:39:27,658 INFO L226 Difference]: Without dead ends: 29367 [2018-11-07 09:39:27,728 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 295 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:39:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29367 states. [2018-11-07 09:39:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29367 to 29365. [2018-11-07 09:39:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29365 states. [2018-11-07 09:39:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29365 states to 29365 states and 36823 transitions. [2018-11-07 09:39:28,304 INFO L78 Accepts]: Start accepts. Automaton has 29365 states and 36823 transitions. Word has length 295 [2018-11-07 09:39:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:28,305 INFO L480 AbstractCegarLoop]: Abstraction has 29365 states and 36823 transitions. [2018-11-07 09:39:28,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 29365 states and 36823 transitions. [2018-11-07 09:39:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-07 09:39:28,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:28,335 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:28,336 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:28,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:28,336 INFO L82 PathProgramCache]: Analyzing trace with hash -644235286, now seen corresponding path program 1 times [2018-11-07 09:39:28,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:28,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:28,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:28,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:28,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:28,916 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:39:29,108 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:39:29,323 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:39:29,752 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:39:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 212 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:39:30,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:30,610 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:39:30,611 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-11-07 09:39:30,611 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], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [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], [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], [2356], [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] [2018-11-07 09:39:30,620 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:39:30,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:39:30,855 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:39:30,855 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:39:30,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:30,899 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:39:31,405 INFO L227 lantSequenceWeakener]: Weakened 479 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-07 09:39:31,406 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:39:31,744 INFO L415 sIntCurrentIteration]: We unified 481 AI predicates to 481 [2018-11-07 09:39:31,744 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:39:31,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:39:31,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:39:31,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:31,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:39:31,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:39:31,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:39:31,746 INFO L87 Difference]: Start difference. First operand 29365 states and 36823 transitions. Second operand 10 states. [2018-11-07 09:41:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:41:02,027 INFO L93 Difference]: Finished difference Result 60843 states and 75873 transitions. [2018-11-07 09:41:02,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:41:02,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 482 [2018-11-07 09:41:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:41:02,124 INFO L225 Difference]: With dead ends: 60843 [2018-11-07 09:41:02,124 INFO L226 Difference]: Without dead ends: 30070 [2018-11-07 09:41:02,172 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 490 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:41:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2018-11-07 09:41:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 30068. [2018-11-07 09:41:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30068 states. [2018-11-07 09:41:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30068 states to 30068 states and 37523 transitions. [2018-11-07 09:41:02,617 INFO L78 Accepts]: Start accepts. Automaton has 30068 states and 37523 transitions. Word has length 482 [2018-11-07 09:41:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:41:02,617 INFO L480 AbstractCegarLoop]: Abstraction has 30068 states and 37523 transitions. [2018-11-07 09:41:02,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:41:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 30068 states and 37523 transitions. [2018-11-07 09:41:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2018-11-07 09:41:02,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:41:02,687 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:02,687 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:41:02,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1827431209, now seen corresponding path program 1 times [2018-11-07 09:41:02,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:41:02,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:02,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:41:02,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:02,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:41:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:41:03,677 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 09:41:04,045 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 09:41:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 155 proven. 698 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 09:41:06,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:41:06,071 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:41:06,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1126 with the following transitions: [2018-11-07 09:41:06,073 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [795], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [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], [1943], [1951], [1959], [1967], [1975], [1983], [1987], [1989], [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], [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], [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], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2760], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:41:06,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:41:06,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:41:10,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:41:10,592 INFO L272 AbstractInterpreter]: Visited 537 different actions 1616 times. Merged at 10 different actions 27 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:41:10,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:10,597 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:41:11,747 INFO L227 lantSequenceWeakener]: Weakened 1122 states. On average, predicates are now at 80.22% of their original sizes. [2018-11-07 09:41:11,747 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:41:11,926 INFO L415 sIntCurrentIteration]: We unified 1124 AI predicates to 1124 [2018-11-07 09:41:11,927 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:41:11,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:41:11,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2018-11-07 09:41:11,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:41:11,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:41:11,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:41:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:41:11,929 INFO L87 Difference]: Start difference. First operand 30068 states and 37523 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 09:41:39,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 09:41:39,681 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:41:39,686 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:41:39,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:41:39 BoogieIcfgContainer [2018-11-07 09:41:39,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:41:39,687 INFO L168 Benchmark]: Toolchain (without parser) took 230732.65 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -279.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,689 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:41:39,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1722.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,691 INFO L168 Benchmark]: Boogie Preprocessor took 260.14 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,692 INFO L168 Benchmark]: RCFGBuilder took 8374.88 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: 490.5 MB). Peak memory consumption was 490.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,692 INFO L168 Benchmark]: TraceAbstraction took 220059.11 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 21.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:41:39,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1722.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 311.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 260.14 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8374.88 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: 490.5 MB). Peak memory consumption was 490.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220059.11 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 21.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (30068states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (8068 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 201.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2625 SDtfs, 19635 SDslu, 1697 SDs, 0 SdLazy, 33415 SolverSat, 5875 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1963 GetRequests, 1884 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30068occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9982948051202096 AbsIntWeakeningRatio, 0.053712480252764615 AbsIntAvgWeakeningVarsNumRemoved, 16.096366508688785 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 225 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2504 NumberOfCodeBlocks, 2504 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2496 ConstructedInterpolants, 0 QuantifiedInterpolants, 9062278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 806/1833 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown