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/Problem11_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:36:48,983 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:36:48,986 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:36:48,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:36:48,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:36:49,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:36:49,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:36:49,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:36:49,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:36:49,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:36:49,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:36:49,008 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:36:49,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:36:49,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:36:49,011 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:36:49,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:36:49,012 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:36:49,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:36:49,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:36:49,018 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:36:49,019 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:36:49,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:36:49,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:36:49,023 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:36:49,023 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:36:49,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:36:49,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:36:49,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:36:49,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:36:49,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:36:49,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:36:49,029 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:36:49,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:36:49,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:36:49,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:36:49,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:36:49,031 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 14:36:49,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:36:49,048 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:36:49,049 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:36:49,049 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:36:49,049 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:36:49,049 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:36:49,049 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:36:49,050 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:36:49,050 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:36:49,050 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:36:49,050 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:36:49,050 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:36:49,051 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:36:49,052 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:36:49,052 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:36:49,052 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:36:49,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:36:49,052 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:36:49,053 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:36:49,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:36:49,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:36:49,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:36:49,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:36:49,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:36:49,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:36:49,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:36:49,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:36:49,055 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:36:49,056 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:36:49,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:36:49,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:36:49,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:36:49,118 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:36:49,118 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:36:49,119 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59_true-unreach-call.c [2018-11-07 14:36:49,181 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0542a2f43/0305a505426e40e29fdc6fbd7da7d6f7/FLAG6f1581066 [2018-11-07 14:36:49,761 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:36:49,762 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label59_true-unreach-call.c [2018-11-07 14:36:49,785 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0542a2f43/0305a505426e40e29fdc6fbd7da7d6f7/FLAG6f1581066 [2018-11-07 14:36:49,806 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0542a2f43/0305a505426e40e29fdc6fbd7da7d6f7 [2018-11-07 14:36:49,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:36:49,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:36:49,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:49,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:36:49,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:36:49,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:49" (1/1) ... [2018-11-07 14:36:49,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba07e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:49, skipping insertion in model container [2018-11-07 14:36:49,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:49" (1/1) ... [2018-11-07 14:36:49,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:36:49,926 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:36:50,586 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:50,595 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:36:50,915 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:50,935 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:36:50,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50 WrapperNode [2018-11-07 14:36:50,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:50,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:50,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:36:50,937 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:36:50,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:51,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:36:51,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:36:51,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:36:51,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (1/1) ... [2018-11-07 14:36:51,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:36:51,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:36:51,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:36:51,292 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:36:51,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (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 14:36:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:36:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:36:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:36:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:36:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:36:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:36:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:36:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:36:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:36:55,965 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:36:55,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:55 BoogieIcfgContainer [2018-11-07 14:36:55,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:36:55,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:36:55,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:36:55,971 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:36:55,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:36:49" (1/3) ... [2018-11-07 14:36:55,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597508da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:55, skipping insertion in model container [2018-11-07 14:36:55,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:50" (2/3) ... [2018-11-07 14:36:55,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597508da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:55, skipping insertion in model container [2018-11-07 14:36:55,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:55" (3/3) ... [2018-11-07 14:36:55,975 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label59_true-unreach-call.c [2018-11-07 14:36:55,985 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:36:55,995 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:36:56,012 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:36:56,052 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:36:56,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:36:56,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:36:56,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:36:56,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:36:56,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:36:56,053 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:36:56,054 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:36:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:36:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 14:36:56,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:56,095 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:36:56,098 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:56,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:56,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1395021716, now seen corresponding path program 1 times [2018-11-07 14:36:56,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:56,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:56,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:56,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:56,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:56,647 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:36:56,780 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 14:36:56,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:56,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:36:56,784 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:56,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:36:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:36:56,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:36:56,810 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 14:36:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:58,801 INFO L93 Difference]: Finished difference Result 785 states and 1378 transitions. [2018-11-07 14:36:58,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:36:58,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-07 14:36:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:58,826 INFO L225 Difference]: With dead ends: 785 [2018-11-07 14:36:58,827 INFO L226 Difference]: Without dead ends: 490 [2018-11-07 14:36:58,836 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 14:36:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-11-07 14:36:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2018-11-07 14:36:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 14:36:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 841 transitions. [2018-11-07 14:36:58,936 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 841 transitions. Word has length 66 [2018-11-07 14:36:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:58,937 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 841 transitions. [2018-11-07 14:36:58,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:36:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 841 transitions. [2018-11-07 14:36:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 14:36:58,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:58,946 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, 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] [2018-11-07 14:36:58,947 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:58,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -994011168, now seen corresponding path program 1 times [2018-11-07 14:36:58,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:58,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:58,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:58,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:58,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:59,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:59,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:36:59,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:59,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:36:59,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:36:59,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:36:59,240 INFO L87 Difference]: Start difference. First operand 482 states and 841 transitions. Second operand 6 states. [2018-11-07 14:37:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:04,585 INFO L93 Difference]: Finished difference Result 1762 states and 3209 transitions. [2018-11-07 14:37:04,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:37:04,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 14:37:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:04,614 INFO L225 Difference]: With dead ends: 1762 [2018-11-07 14:37:04,614 INFO L226 Difference]: Without dead ends: 1286 [2018-11-07 14:37:04,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:37:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2018-11-07 14:37:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1252. [2018-11-07 14:37:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2018-11-07 14:37:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1988 transitions. [2018-11-07 14:37:04,712 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1988 transitions. Word has length 136 [2018-11-07 14:37:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:04,713 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 1988 transitions. [2018-11-07 14:37:04,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:37:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1988 transitions. [2018-11-07 14:37:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 14:37:04,717 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:04,718 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, 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] [2018-11-07 14:37:04,718 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:04,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:04,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2016062845, now seen corresponding path program 1 times [2018-11-07 14:37:04,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:04,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:04,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:04,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:04,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:05,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:05,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:37:05,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:05,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:37:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:37:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:37:05,034 INFO L87 Difference]: Start difference. First operand 1252 states and 1988 transitions. Second operand 6 states. [2018-11-07 14:37:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:07,789 INFO L93 Difference]: Finished difference Result 3466 states and 5570 transitions. [2018-11-07 14:37:07,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:37:07,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 14:37:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:07,807 INFO L225 Difference]: With dead ends: 3466 [2018-11-07 14:37:07,808 INFO L226 Difference]: Without dead ends: 2220 [2018-11-07 14:37:07,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:37:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2018-11-07 14:37:07,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2195. [2018-11-07 14:37:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2018-11-07 14:37:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3227 transitions. [2018-11-07 14:37:07,882 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3227 transitions. Word has length 139 [2018-11-07 14:37:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:07,883 INFO L480 AbstractCegarLoop]: Abstraction has 2195 states and 3227 transitions. [2018-11-07 14:37:07,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:37:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3227 transitions. [2018-11-07 14:37:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 14:37:07,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:07,887 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, 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] [2018-11-07 14:37:07,887 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:07,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1284370280, now seen corresponding path program 1 times [2018-11-07 14:37:07,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:07,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:07,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:07,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:07,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:08,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:08,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:37:08,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:08,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:37:08,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:37:08,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:37:08,230 INFO L87 Difference]: Start difference. First operand 2195 states and 3227 transitions. Second operand 7 states. [2018-11-07 14:37:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:13,149 INFO L93 Difference]: Finished difference Result 5920 states and 8968 transitions. [2018-11-07 14:37:13,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 14:37:13,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2018-11-07 14:37:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:13,176 INFO L225 Difference]: With dead ends: 5920 [2018-11-07 14:37:13,176 INFO L226 Difference]: Without dead ends: 3731 [2018-11-07 14:37:13,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 14:37:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2018-11-07 14:37:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3559. [2018-11-07 14:37:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3559 states. [2018-11-07 14:37:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 4983 transitions. [2018-11-07 14:37:13,310 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 4983 transitions. Word has length 140 [2018-11-07 14:37:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:13,310 INFO L480 AbstractCegarLoop]: Abstraction has 3559 states and 4983 transitions. [2018-11-07 14:37:13,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:37:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 4983 transitions. [2018-11-07 14:37:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 14:37:13,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:13,314 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, 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] [2018-11-07 14:37:13,315 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:13,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:13,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2129360111, now seen corresponding path program 1 times [2018-11-07 14:37:13,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:13,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:13,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:13,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:13,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:13,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:13,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:37:13,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:13,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:37:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:37:13,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:37:13,494 INFO L87 Difference]: Start difference. First operand 3559 states and 4983 transitions. Second operand 3 states. [2018-11-07 14:37:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:15,248 INFO L93 Difference]: Finished difference Result 8037 states and 11665 transitions. [2018-11-07 14:37:15,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:37:15,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-11-07 14:37:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:15,279 INFO L225 Difference]: With dead ends: 8037 [2018-11-07 14:37:15,279 INFO L226 Difference]: Without dead ends: 4484 [2018-11-07 14:37:15,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:37:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2018-11-07 14:37:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4423. [2018-11-07 14:37:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4423 states. [2018-11-07 14:37:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5864 transitions. [2018-11-07 14:37:15,403 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5864 transitions. Word has length 198 [2018-11-07 14:37:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:15,404 INFO L480 AbstractCegarLoop]: Abstraction has 4423 states and 5864 transitions. [2018-11-07 14:37:15,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:37:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5864 transitions. [2018-11-07 14:37:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 14:37:15,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:15,409 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, 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] [2018-11-07 14:37:15,409 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:15,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1377359462, now seen corresponding path program 1 times [2018-11-07 14:37:15,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:15,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:15,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:15,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:15,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:15,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:37:15,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:37:15,781 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 14:37:15,783 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:37:15,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:37:15,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:37:16,565 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:37:18,175 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 14:37:18,177 INFO L272 AbstractInterpreter]: Visited 156 different actions 454 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:37:18,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:18,229 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 14:37:18,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:37:18,229 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 14:37:18,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:18,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 14:37:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:18,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 14:37:22,411 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-11-07 14:37:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:22,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 14:37:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:22,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 14:37:22,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-11-07 14:37:22,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:22,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:37:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:37:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-07 14:37:22,841 INFO L87 Difference]: Start difference. First operand 4423 states and 5864 transitions. Second operand 3 states. [2018-11-07 14:37:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:25,161 INFO L93 Difference]: Finished difference Result 10058 states and 13943 transitions. [2018-11-07 14:37:25,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:37:25,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-07 14:37:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:25,188 INFO L225 Difference]: With dead ends: 10058 [2018-11-07 14:37:25,189 INFO L226 Difference]: Without dead ends: 5641 [2018-11-07 14:37:25,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-07 14:37:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2018-11-07 14:37:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 5599. [2018-11-07 14:37:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5599 states. [2018-11-07 14:37:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7753 transitions. [2018-11-07 14:37:25,356 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7753 transitions. Word has length 214 [2018-11-07 14:37:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:25,357 INFO L480 AbstractCegarLoop]: Abstraction has 5599 states and 7753 transitions. [2018-11-07 14:37:25,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:37:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7753 transitions. [2018-11-07 14:37:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-07 14:37:25,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:25,372 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:25,372 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:25,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:25,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2132579400, now seen corresponding path program 1 times [2018-11-07 14:37:25,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:25,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:25,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:25,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:25,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:26,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:37:26,007 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:37:26,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-11-07 14:37:26,010 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:37:26,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:37:26,017 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:37:26,261 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:37:27,375 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:37:27,375 INFO L272 AbstractInterpreter]: Visited 140 different actions 407 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:37:27,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:27,414 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:37:28,264 INFO L227 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 73.69% of their original sizes. [2018-11-07 14:37:28,264 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:37:28,629 INFO L415 sIntCurrentIteration]: We unified 294 AI predicates to 294 [2018-11-07 14:37:28,629 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:37:28,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:37:28,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 14:37:28,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:28,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 14:37:28,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 14:37:28,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-07 14:37:28,632 INFO L87 Difference]: Start difference. First operand 5599 states and 7753 transitions. Second operand 13 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown