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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:55:58,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:55:58,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:55:58,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:55:58,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:55:58,988 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:55:58,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:55:58,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:55:59,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:55:59,002 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:55:59,003 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:55:59,003 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:55:59,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:55:59,005 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:55:59,008 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:55:59,009 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:55:59,010 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:55:59,017 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:55:59,022 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:55:59,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:55:59,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:55:59,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:55:59,033 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:55:59,042 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:55:59,042 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:55:59,045 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:55:59,046 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:55:59,046 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:55:59,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:55:59,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:55:59,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:55:59,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:55:59,073 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:55:59,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:55:59,073 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:55:59,074 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:55:59,074 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:55:59,074 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:55:59,074 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:55:59,074 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:55:59,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:55:59,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:55:59,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:55:59,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:55:59,076 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:55:59,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:55:59,076 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:55:59,076 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:55:59,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:55:59,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:55:59,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:55:59,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:55:59,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:55:59,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:55:59,078 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:55:59,079 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:55:59,079 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:55:59,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:55:59,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:55:59,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:55:59,151 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:55:59,151 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:55:59,152 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-11-07 00:55:59,220 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a03a02/90a9029dba504f73a276d943395458b7/FLAG071eb88f5 [2018-11-07 00:56:00,180 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:56:00,181 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-11-07 00:56:00,251 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a03a02/90a9029dba504f73a276d943395458b7/FLAG071eb88f5 [2018-11-07 00:56:00,269 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a03a02/90a9029dba504f73a276d943395458b7 [2018-11-07 00:56:00,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:56:00,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:56:00,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:56:00,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:56:00,291 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:56:00,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:00" (1/1) ... [2018-11-07 00:56:00,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439b61f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:00, skipping insertion in model container [2018-11-07 00:56:00,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:00" (1/1) ... [2018-11-07 00:56:00,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:56:00,575 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:56:02,712 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:56:02,717 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:56:03,864 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:56:03,924 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:56:03,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03 WrapperNode [2018-11-07 00:56:03,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:56:03,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:56:03,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:56:03,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:56:03,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:56:04,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:56:04,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:56:04,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:56:04,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (1/1) ... [2018-11-07 00:56:04,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:56:04,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:56:04,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:56:04,969 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:56:04,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (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 00:56:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:56:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:56:05,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:56:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 00:56:05,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 00:56:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 00:56:05,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 00:56:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:56:05,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:56:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:56:05,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:56:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:56:05,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:56:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:56:05,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:56:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:56:05,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:56:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:56:05,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:56:18,774 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:56:18,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:18 BoogieIcfgContainer [2018-11-07 00:56:18,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:56:18,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:56:18,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:56:18,780 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:56:18,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:00" (1/3) ... [2018-11-07 00:56:18,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2230ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:18, skipping insertion in model container [2018-11-07 00:56:18,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:03" (2/3) ... [2018-11-07 00:56:18,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2230ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:18, skipping insertion in model container [2018-11-07 00:56:18,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:18" (3/3) ... [2018-11-07 00:56:18,784 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label51_false-unreach-call.c [2018-11-07 00:56:18,794 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:56:18,805 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:56:18,823 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:56:18,877 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:56:18,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:56:18,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:56:18,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:56:18,878 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:56:18,878 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:56:18,878 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:56:18,879 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:56:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 00:56:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-07 00:56:18,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:18,937 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] [2018-11-07 00:56:18,939 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:18,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2076705580, now seen corresponding path program 1 times [2018-11-07 00:56:18,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:19,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:19,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:19,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:19,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:19,313 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:56:19,427 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 00:56:19,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:19,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:56:19,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:19,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:56:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:56:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:56:19,464 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 00:56:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:56:33,057 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-11-07 00:56:33,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:56:33,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-07 00:56:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:56:33,116 INFO L225 Difference]: With dead ends: 5042 [2018-11-07 00:56:33,116 INFO L226 Difference]: Without dead ends: 3262 [2018-11-07 00:56:33,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:56:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-11-07 00:56:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-11-07 00:56:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-11-07 00:56:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-11-07 00:56:33,365 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 24 [2018-11-07 00:56:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:56:33,366 INFO L480 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-11-07 00:56:33,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:56:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-11-07 00:56:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 00:56:33,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:33,377 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:56:33,378 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:33,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:33,378 INFO L82 PathProgramCache]: Analyzing trace with hash 289258477, now seen corresponding path program 1 times [2018-11-07 00:56:33,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:33,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:33,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:33,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:33,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:33,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:33,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:56:33,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:33,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:56:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:56:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:56:33,965 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-11-07 00:56:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:56:56,783 INFO L93 Difference]: Finished difference Result 9608 states and 17975 transitions. [2018-11-07 00:56:56,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:56:56,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 00:56:56,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:56:56,828 INFO L225 Difference]: With dead ends: 9608 [2018-11-07 00:56:56,828 INFO L226 Difference]: Without dead ends: 6400 [2018-11-07 00:56:56,839 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:56:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-11-07 00:56:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6337. [2018-11-07 00:56:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2018-11-07 00:56:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 10076 transitions. [2018-11-07 00:56:57,027 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 10076 transitions. Word has length 124 [2018-11-07 00:56:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:56:57,030 INFO L480 AbstractCegarLoop]: Abstraction has 6337 states and 10076 transitions. [2018-11-07 00:56:57,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:56:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 10076 transitions. [2018-11-07 00:56:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 00:56:57,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:57,045 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:56:57,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:57,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1869399833, now seen corresponding path program 1 times [2018-11-07 00:56:57,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:57,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:57,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:57,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:57,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:57,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:57,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:56:57,317 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:57,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:56:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:56:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:56:57,318 INFO L87 Difference]: Start difference. First operand 6337 states and 10076 transitions. Second operand 6 states. [2018-11-07 00:57:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:12,312 INFO L93 Difference]: Finished difference Result 19038 states and 30581 transitions. [2018-11-07 00:57:12,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:57:12,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 00:57:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:12,370 INFO L225 Difference]: With dead ends: 19038 [2018-11-07 00:57:12,371 INFO L226 Difference]: Without dead ends: 12707 [2018-11-07 00:57:12,391 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 00:57:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12707 states. [2018-11-07 00:57:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12707 to 12414. [2018-11-07 00:57:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2018-11-07 00:57:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 18890 transitions. [2018-11-07 00:57:12,768 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 18890 transitions. Word has length 134 [2018-11-07 00:57:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:12,768 INFO L480 AbstractCegarLoop]: Abstraction has 12414 states and 18890 transitions. [2018-11-07 00:57:12,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 18890 transitions. [2018-11-07 00:57:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 00:57:12,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:12,775 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:12,775 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:12,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash -837879114, now seen corresponding path program 1 times [2018-11-07 00:57:12,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:12,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:12,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:12,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:12,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:13,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:13,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:57:13,197 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:13,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:57:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:57:13,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:57:13,198 INFO L87 Difference]: Start difference. First operand 12414 states and 18890 transitions. Second operand 6 states. [2018-11-07 00:57:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:27,831 INFO L93 Difference]: Finished difference Result 36974 states and 57795 transitions. [2018-11-07 00:57:27,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:27,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-11-07 00:57:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:27,956 INFO L225 Difference]: With dead ends: 36974 [2018-11-07 00:57:27,956 INFO L226 Difference]: Without dead ends: 24566 [2018-11-07 00:57:27,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:57:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2018-11-07 00:57:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24168. [2018-11-07 00:57:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24168 states. [2018-11-07 00:57:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 36341 transitions. [2018-11-07 00:57:28,535 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 36341 transitions. Word has length 189 [2018-11-07 00:57:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:28,536 INFO L480 AbstractCegarLoop]: Abstraction has 24168 states and 36341 transitions. [2018-11-07 00:57:28,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 36341 transitions. [2018-11-07 00:57:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 00:57:28,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:28,542 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:28,542 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:28,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1206205716, now seen corresponding path program 1 times [2018-11-07 00:57:28,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:28,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:28,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:28,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:28,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:29,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:29,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 00:57:29,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:29,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:57:29,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:57:29,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:57:29,393 INFO L87 Difference]: Start difference. First operand 24168 states and 36341 transitions. Second operand 7 states. [2018-11-07 00:57:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:59,595 INFO L93 Difference]: Finished difference Result 88839 states and 148882 transitions. [2018-11-07 00:57:59,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:57:59,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-11-07 00:57:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:59,921 INFO L225 Difference]: With dead ends: 88839 [2018-11-07 00:57:59,922 INFO L226 Difference]: Without dead ends: 64677 [2018-11-07 00:58:00,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:58:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64677 states. [2018-11-07 00:58:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64677 to 63961. [2018-11-07 00:58:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63961 states. [2018-11-07 00:58:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63961 states to 63961 states and 92992 transitions. [2018-11-07 00:58:01,656 INFO L78 Accepts]: Start accepts. Automaton has 63961 states and 92992 transitions. Word has length 241 [2018-11-07 00:58:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:58:01,658 INFO L480 AbstractCegarLoop]: Abstraction has 63961 states and 92992 transitions. [2018-11-07 00:58:01,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:58:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 63961 states and 92992 transitions. [2018-11-07 00:58:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-11-07 00:58:01,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:58:01,668 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:58:01,668 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:58:01,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1578526627, now seen corresponding path program 1 times [2018-11-07 00:58:01,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:58:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:01,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:58:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:01,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:58:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:58:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:58:02,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:58:02,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:58:02,941 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-11-07 00:58:02,944 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5318], [5320], [5323], [5331], [5339], [5347], [5355], [5363], [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], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 00:58:03,045 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:58:03,045 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:58:11,036 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:58:11,670 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:58:11,671 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:58:11,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:11,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:58:16,940 INFO L227 lantSequenceWeakener]: Weakened 443 states. On average, predicates are now at 75.07% of their original sizes. [2018-11-07 00:58:16,940 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:58:17,533 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-11-07 00:58:17,534 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:58:17,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:58:17,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:58:17,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:17,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:58:17,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:58:17,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:58:17,537 INFO L87 Difference]: Start difference. First operand 63961 states and 92992 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown