java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:54:32,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:54:32,981 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:54:33,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:54:33,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:54:33,004 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:54:33,005 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:54:33,007 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:54:33,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:54:33,009 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:54:33,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:54:33,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:54:33,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:54:33,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:54:33,014 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:54:33,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:54:33,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:54:33,017 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:54:33,019 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:54:33,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:54:33,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:54:33,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:54:33,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:54:33,026 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:54:33,026 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:54:33,027 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:54:33,028 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:54:33,029 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:54:33,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:54:33,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:54:33,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:54:33,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:54:33,041 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:54:33,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:54:33,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:54:33,074 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:54:33,074 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:54:33,074 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:54:33,074 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:54:33,074 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:54:33,075 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:54:33,075 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:54:33,075 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:54:33,075 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:54:33,075 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:54:33,076 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:54:33,076 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:54:33,077 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:54:33,077 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:54:33,077 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:54:33,078 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:54:33,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:54:33,080 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:54:33,080 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:54:33,080 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:54:33,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:54:33,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:54:33,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:54:33,081 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:54:33,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:54:33,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:54:33,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:54:33,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:54:33,082 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:54:33,082 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:54:33,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:54:33,083 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:54:33,083 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:54:33,083 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:54:33,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:54:33,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:54:33,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:54:33,162 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:54:33,162 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:54:33,163 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-10-24 23:54:33,235 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da71d169a/57ea2a9472cb4941a23be05006c18e86/FLAG6f2f48482 [2018-10-24 23:54:34,094 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:54:34,095 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label28_false-unreach-call.c [2018-10-24 23:54:34,138 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da71d169a/57ea2a9472cb4941a23be05006c18e86/FLAG6f2f48482 [2018-10-24 23:54:34,154 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da71d169a/57ea2a9472cb4941a23be05006c18e86 [2018-10-24 23:54:34,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:54:34,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:54:34,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:34,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:54:34,180 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:54:34,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:34" (1/1) ... [2018-10-24 23:54:34,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c12104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:34, skipping insertion in model container [2018-10-24 23:54:34,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:34" (1/1) ... [2018-10-24 23:54:34,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:54:34,469 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:54:36,566 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:36,573 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:54:37,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:37,820 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:54:37,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37 WrapperNode [2018-10-24 23:54:37,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:37,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:37,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:54:37,822 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:54:37,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:37,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:38,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:54:38,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:54:38,552 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:54:38,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:38,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... [2018-10-24 23:54:39,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:54:39,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:54:39,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:54:39,009 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:54:39,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:54:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:54:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:54:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 23:54:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 23:54:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 23:54:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 23:54:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:54:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:54:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:54:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:54:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:54:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:54:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:54:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:54:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:54:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:54:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:54:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:54:56,533 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:54:56,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:56 BoogieIcfgContainer [2018-10-24 23:54:56,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:54:56,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:54:56,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:54:56,539 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:54:56,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:54:34" (1/3) ... [2018-10-24 23:54:56,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4871f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:56, skipping insertion in model container [2018-10-24 23:54:56,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:37" (2/3) ... [2018-10-24 23:54:56,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4871f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:56, skipping insertion in model container [2018-10-24 23:54:56,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:56" (3/3) ... [2018-10-24 23:54:56,543 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label28_false-unreach-call.c [2018-10-24 23:54:56,552 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:54:56,562 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:54:56,580 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:54:56,636 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:54:56,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:54:56,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:54:56,636 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:54:56,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:54:56,637 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:54:56,637 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:54:56,637 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:54:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 23:54:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 23:54:56,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:54:56,711 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] [2018-10-24 23:54:56,714 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:54:56,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:54:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash -980043900, now seen corresponding path program 1 times [2018-10-24 23:54:56,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:54:56,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:56,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:54:56,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:56,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:54:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:54:57,146 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:54:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:54:57,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:54:57,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:54:57,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:54:57,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:54:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:54:57,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:54:57,295 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 23:55:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:14,147 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-24 23:55:14,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:55:14,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-24 23:55:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:14,205 INFO L225 Difference]: With dead ends: 4999 [2018-10-24 23:55:14,205 INFO L226 Difference]: Without dead ends: 3219 [2018-10-24 23:55:14,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:55:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-24 23:55:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-24 23:55:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 23:55:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-24 23:55:14,447 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 30 [2018-10-24 23:55:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:14,448 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-24 23:55:14,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:55:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-24 23:55:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 23:55:14,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:14,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:55:14,456 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:14,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:14,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1852016965, now seen corresponding path program 1 times [2018-10-24 23:55:14,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:14,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:14,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:14,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:14,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:14,864 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:55:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:55:15,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:55:15,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:55:15,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:15,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:55:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:55:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:55:15,257 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-24 23:55:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:40,637 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-10-24 23:55:40,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:55:40,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 23:55:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:40,682 INFO L225 Difference]: With dead ends: 9331 [2018-10-24 23:55:40,682 INFO L226 Difference]: Without dead ends: 6122 [2018-10-24 23:55:40,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:55:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-10-24 23:55:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-10-24 23:55:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-10-24 23:55:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-10-24 23:55:40,869 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 102 [2018-10-24 23:55:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:40,869 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-10-24 23:55:40,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:55:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-10-24 23:55:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 23:55:40,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:40,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:55:40,880 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:40,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:40,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1285032185, now seen corresponding path program 1 times [2018-10-24 23:55:40,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:40,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:40,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:40,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:40,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:55:41,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:55:41,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:55:41,157 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:41,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:55:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:55:41,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:55:41,158 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-10-24 23:56:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:56:22,978 INFO L93 Difference]: Finished difference Result 24241 states and 39700 transitions. [2018-10-24 23:56:22,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 23:56:22,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-10-24 23:56:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:56:23,060 INFO L225 Difference]: With dead ends: 24241 [2018-10-24 23:56:23,060 INFO L226 Difference]: Without dead ends: 18163 [2018-10-24 23:56:23,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:56:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18163 states. [2018-10-24 23:56:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18163 to 18089. [2018-10-24 23:56:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18089 states. [2018-10-24 23:56:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18089 states to 18089 states and 25630 transitions. [2018-10-24 23:56:23,553 INFO L78 Accepts]: Start accepts. Automaton has 18089 states and 25630 transitions. Word has length 120 [2018-10-24 23:56:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:56:23,553 INFO L481 AbstractCegarLoop]: Abstraction has 18089 states and 25630 transitions. [2018-10-24 23:56:23,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:56:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 18089 states and 25630 transitions. [2018-10-24 23:56:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 23:56:23,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:56:23,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:56:23,560 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:56:23,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:56:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash -831878920, now seen corresponding path program 1 times [2018-10-24 23:56:23,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:56:23,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:23,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:56:23,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:23,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:56:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:56:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:56:23,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:56:23,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:56:23,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:56:23,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:56:23,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:56:23,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:56:23,933 INFO L87 Difference]: Start difference. First operand 18089 states and 25630 transitions. Second operand 5 states. [2018-10-24 23:56:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:56:55,976 INFO L93 Difference]: Finished difference Result 56344 states and 85034 transitions. [2018-10-24 23:56:55,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:56:55,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2018-10-24 23:56:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:56:56,140 INFO L225 Difference]: With dead ends: 56344 [2018-10-24 23:56:56,140 INFO L226 Difference]: Without dead ends: 38261 [2018-10-24 23:56:56,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:56:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38261 states. [2018-10-24 23:56:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38261 to 37187. [2018-10-24 23:56:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37187 states. [2018-10-24 23:56:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 50452 transitions. [2018-10-24 23:56:57,077 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 50452 transitions. Word has length 165 [2018-10-24 23:56:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:56:57,078 INFO L481 AbstractCegarLoop]: Abstraction has 37187 states and 50452 transitions. [2018-10-24 23:56:57,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:56:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 50452 transitions. [2018-10-24 23:56:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 23:56:57,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:56:57,084 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:56:57,085 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:56:57,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:56:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash -309486282, now seen corresponding path program 1 times [2018-10-24 23:56:57,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:56:57,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:57,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:56:57,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:57,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:56:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:56:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 46 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:56:57,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:56:57,636 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:56:57,638 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-24 23:56:57,641 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5366], [5368], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 23:56:57,703 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:56:57,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:56:58,235 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:56:58,239 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 23:56:58,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:56:58,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:56:58,847 INFO L232 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 75.24% of their original sizes. [2018-10-24 23:56:58,847 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:56:59,091 INFO L413 sIntCurrentIteration]: We have 184 unified AI predicates [2018-10-24 23:56:59,091 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:56:59,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:56:59,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-24 23:56:59,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:56:59,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:56:59,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:56:59,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:56:59,096 INFO L87 Difference]: Start difference. First operand 37187 states and 50452 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown