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/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:16:22,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:16:23,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:16:23,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:16:23,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:16:23,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:16:23,020 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:16:23,023 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:16:23,026 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:16:23,027 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:16:23,031 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:16:23,031 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:16:23,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:16:23,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:16:23,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:16:23,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:16:23,039 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:16:23,042 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:16:23,050 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:16:23,052 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:16:23,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:16:23,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:16:23,058 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:16:23,059 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:16:23,059 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:16:23,060 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:16:23,061 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:16:23,063 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:16:23,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:16:23,066 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:16:23,066 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:16:23,068 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:16:23,068 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:16:23,068 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:16:23,069 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:16:23,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:16:23,071 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 03:16:23,086 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:16:23,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:16:23,087 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:16:23,087 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:16:23,087 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:16:23,087 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:16:23,087 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:16:23,088 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:16:23,088 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:16:23,088 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:16:23,088 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:16:23,088 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:16:23,089 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:16:23,089 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:16:23,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:16:23,090 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:16:23,090 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:16:23,090 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:16:23,090 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:16:23,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:16:23,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:16:23,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:16:23,091 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:16:23,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:16:23,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:16:23,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:16:23,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:16:23,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:16:23,092 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:16:23,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:16:23,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:16:23,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:16:23,093 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:16:23,093 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:16:23,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:16:23,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:16:23,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:16:23,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:16:23,174 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:16:23,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-11-07 03:16:23,231 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce7b593c/a41200c5bfca420092c55870519c837c/FLAGb87991608 [2018-11-07 03:16:24,000 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:16:24,001 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-11-07 03:16:24,040 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce7b593c/a41200c5bfca420092c55870519c837c/FLAGb87991608 [2018-11-07 03:16:24,059 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce7b593c/a41200c5bfca420092c55870519c837c [2018-11-07 03:16:24,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:16:24,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:16:24,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:16:24,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:16:24,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:16:24,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:16:24" (1/1) ... [2018-11-07 03:16:24,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:24, skipping insertion in model container [2018-11-07 03:16:24,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:16:24" (1/1) ... [2018-11-07 03:16:24,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:16:24,285 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:16:25,782 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:16:25,787 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:16:26,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:16:26,654 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:16:26,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26 WrapperNode [2018-11-07 03:16:26,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:16:26,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:16:26,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:16:26,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:16:26,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:16:27,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:16:27,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:16:27,047 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:16:27,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (1/1) ... [2018-11-07 03:16:27,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:16:27,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:16:27,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:16:27,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:16:27,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (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 03:16:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:16:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:16:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:16:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:16:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:16:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:16:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:16:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:16:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:16:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:16:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:16:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:16:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:16:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:16:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:16:37,623 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:16:37,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:16:37 BoogieIcfgContainer [2018-11-07 03:16:37,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:16:37,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:16:37,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:16:37,629 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:16:37,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:16:24" (1/3) ... [2018-11-07 03:16:37,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ba26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:16:37, skipping insertion in model container [2018-11-07 03:16:37,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:26" (2/3) ... [2018-11-07 03:16:37,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ba26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:16:37, skipping insertion in model container [2018-11-07 03:16:37,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:16:37" (3/3) ... [2018-11-07 03:16:37,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-11-07 03:16:37,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:16:37,654 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:16:37,671 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:16:37,720 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:16:37,720 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:16:37,720 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:16:37,720 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:16:37,720 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:16:37,721 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:16:37,721 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:16:37,721 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:16:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:16:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 03:16:37,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:37,775 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:16:37,778 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:37,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:37,784 INFO L82 PathProgramCache]: Analyzing trace with hash 963614956, now seen corresponding path program 1 times [2018-11-07 03:16:37,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:37,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:37,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:37,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:37,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:38,308 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:16:38,427 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 03:16:38,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:16:38,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:16:38,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:38,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:16:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:16:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:16:38,458 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 03:16:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:46,858 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 03:16:46,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:16:46,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-07 03:16:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:46,895 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 03:16:46,896 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 03:16:46,909 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:16:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 03:16:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 03:16:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 03:16:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 03:16:47,112 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 48 [2018-11-07 03:16:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:47,113 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 03:16:47,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:16:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 03:16:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 03:16:47,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:47,127 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:47,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:47,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1268878372, now seen corresponding path program 1 times [2018-11-07 03:16:47,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:47,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:47,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:16:47,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:16:47,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:16:47,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:47,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:16:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:16:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:16:47,479 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 03:17:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:01,939 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 03:17:01,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:17:01,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 03:17:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:01,971 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 03:17:01,972 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 03:17:01,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:17:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 03:17:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 03:17:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 03:17:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 03:17:02,109 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 124 [2018-11-07 03:17:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:02,110 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 03:17:02,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:17:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 03:17:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 03:17:02,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:02,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:17:02,118 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:02,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash -594329152, now seen corresponding path program 1 times [2018-11-07 03:17:02,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:02,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:02,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:02,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:02,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:02,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:02,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:17:02,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:02,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:17:02,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:17:02,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:17:02,381 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 03:17:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:19,203 INFO L93 Difference]: Finished difference Result 13650 states and 21731 transitions. [2018-11-07 03:17:19,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:17:19,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-11-07 03:17:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:19,266 INFO L225 Difference]: With dead ends: 13650 [2018-11-07 03:17:19,266 INFO L226 Difference]: Without dead ends: 9974 [2018-11-07 03:17:19,294 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:17:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2018-11-07 03:17:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 9787. [2018-11-07 03:17:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9787 states. [2018-11-07 03:17:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 14485 transitions. [2018-11-07 03:17:19,573 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 14485 transitions. Word has length 138 [2018-11-07 03:17:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:19,574 INFO L480 AbstractCegarLoop]: Abstraction has 9787 states and 14485 transitions. [2018-11-07 03:17:19,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:17:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 14485 transitions. [2018-11-07 03:17:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 03:17:19,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:19,581 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:17:19,581 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:19,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:19,583 INFO L82 PathProgramCache]: Analyzing trace with hash -221189476, now seen corresponding path program 1 times [2018-11-07 03:17:19,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:19,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:19,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:19,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:19,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:19,933 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:17:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:20,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:20,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:17:20,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:20,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:17:20,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:17:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:17:20,070 INFO L87 Difference]: Start difference. First operand 9787 states and 14485 transitions. Second operand 6 states. [2018-11-07 03:17:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:32,144 INFO L93 Difference]: Finished difference Result 34094 states and 53590 transitions. [2018-11-07 03:17:32,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:17:32,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-07 03:17:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:32,271 INFO L225 Difference]: With dead ends: 34094 [2018-11-07 03:17:32,271 INFO L226 Difference]: Without dead ends: 24313 [2018-11-07 03:17:32,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:17:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24313 states. [2018-11-07 03:17:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24313 to 24088. [2018-11-07 03:17:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24088 states. [2018-11-07 03:17:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24088 states to 24088 states and 33915 transitions. [2018-11-07 03:17:32,992 INFO L78 Accepts]: Start accepts. Automaton has 24088 states and 33915 transitions. Word has length 156 [2018-11-07 03:17:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:32,993 INFO L480 AbstractCegarLoop]: Abstraction has 24088 states and 33915 transitions. [2018-11-07 03:17:32,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:17:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24088 states and 33915 transitions. [2018-11-07 03:17:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 03:17:33,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:33,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:17:33,000 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:33,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1233336343, now seen corresponding path program 1 times [2018-11-07 03:17:33,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:33,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:33,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:33,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:33,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:33,285 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:17:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:33,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:33,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:17:33,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:33,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:17:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:17:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:17:33,676 INFO L87 Difference]: Start difference. First operand 24088 states and 33915 transitions. Second operand 6 states. [2018-11-07 03:17:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:42,830 INFO L93 Difference]: Finished difference Result 61340 states and 95925 transitions. [2018-11-07 03:17:42,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:17:42,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 03:17:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:43,045 INFO L225 Difference]: With dead ends: 61340 [2018-11-07 03:17:43,045 INFO L226 Difference]: Without dead ends: 37258 [2018-11-07 03:17:43,106 INFO L604 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 [2018-11-07 03:17:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37258 states. [2018-11-07 03:17:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37258 to 37058. [2018-11-07 03:17:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37058 states. [2018-11-07 03:17:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37058 states to 37058 states and 52792 transitions. [2018-11-07 03:17:44,121 INFO L78 Accepts]: Start accepts. Automaton has 37058 states and 52792 transitions. Word has length 167 [2018-11-07 03:17:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:44,123 INFO L480 AbstractCegarLoop]: Abstraction has 37058 states and 52792 transitions. [2018-11-07 03:17:44,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:17:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 37058 states and 52792 transitions. [2018-11-07 03:17:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 03:17:44,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:44,130 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:17:44,130 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:44,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:44,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1930020088, now seen corresponding path program 1 times [2018-11-07 03:17:44,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:44,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:44,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:44,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:44,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:44,424 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:17:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:44,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:44,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:17:44,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:17:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:17:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:17:44,855 INFO L87 Difference]: Start difference. First operand 37058 states and 52792 transitions. Second operand 6 states. [2018-11-07 03:17:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:54,457 INFO L93 Difference]: Finished difference Result 81309 states and 119305 transitions. [2018-11-07 03:17:54,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:17:54,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 03:17:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:54,666 INFO L225 Difference]: With dead ends: 81309 [2018-11-07 03:17:54,666 INFO L226 Difference]: Without dead ends: 44257 [2018-11-07 03:17:54,757 INFO L604 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 [2018-11-07 03:17:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44257 states. [2018-11-07 03:17:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44257 to 44156. [2018-11-07 03:17:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44156 states. [2018-11-07 03:17:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44156 states to 44156 states and 60179 transitions. [2018-11-07 03:17:55,699 INFO L78 Accepts]: Start accepts. Automaton has 44156 states and 60179 transitions. Word has length 195 [2018-11-07 03:17:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:55,700 INFO L480 AbstractCegarLoop]: Abstraction has 44156 states and 60179 transitions. [2018-11-07 03:17:55,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:17:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 44156 states and 60179 transitions. [2018-11-07 03:17:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-07 03:17:55,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:55,714 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:55,714 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:55,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -559903430, now seen corresponding path program 1 times [2018-11-07 03:17:55,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:55,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:55,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:55,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:55,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:56,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:17:56,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:17:56,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-07 03:17:56,298 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2911], [2913], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:17:56,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:17:56,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:18:03,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:18:03,971 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:18:03,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:03,985 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:18:08,324 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 71.62% of their original sizes. [2018-11-07 03:18:08,324 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:18:10,023 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-11-07 03:18:10,023 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:18:10,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:18:10,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 03:18:10,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:10,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 03:18:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 03:18:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 03:18:10,026 INFO L87 Difference]: Start difference. First operand 44156 states and 60179 transitions. Second operand 11 states. [2018-11-07 03:18:45,060 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown