java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:53:13,171 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:53:13,177 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:53:13,193 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:53:13,194 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:53:13,195 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:53:13,197 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:53:13,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:53:13,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:53:13,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:53:13,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:53:13,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:53:13,216 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:53:13,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:53:13,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:53:13,225 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:53:13,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:53:13,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:53:13,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:53:13,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:53:13,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:53:13,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:53:13,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:53:13,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:53:13,246 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:53:13,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:53:13,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:53:13,250 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:53:13,251 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:53:13,252 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:53:13,252 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:53:13,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:53:13,253 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:53:13,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:53:13,256 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:53:13,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:53:13,258 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:53:13,288 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:53:13,289 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:53:13,290 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:53:13,291 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:53:13,291 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:53:13,291 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:53:13,292 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:53:13,292 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:53:13,292 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:53:13,292 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:53:13,292 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:53:13,293 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:53:13,293 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:53:13,293 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:53:13,295 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:53:13,295 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:53:13,295 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:53:13,295 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:53:13,295 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:53:13,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:53:13,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:53:13,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:53:13,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:53:13,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:53:13,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:53:13,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:53:13,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:53:13,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:53:13,299 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:53:13,299 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:53:13,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:53:13,299 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:53:13,299 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:53:13,300 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:53:13,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:53:13,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:53:13,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:53:13,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:53:13,394 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:53:13,396 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-11-07 14:53:13,465 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0f99029/bdf1a1b6da9849439e1d328971c15022/FLAGb1e5f7967 [2018-11-07 14:53:14,277 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:53:14,278 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-11-07 14:53:14,327 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0f99029/bdf1a1b6da9849439e1d328971c15022/FLAGb1e5f7967 [2018-11-07 14:53:14,346 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0f99029/bdf1a1b6da9849439e1d328971c15022 [2018-11-07 14:53:14,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:53:14,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:53:14,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:14,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:53:14,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:53:14,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 14:53:14,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:14, skipping insertion in model container [2018-11-07 14:53:14,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 14:53:14,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:53:14,590 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:53:16,130 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:16,135 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:53:16,891 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:16,932 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:53:16,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16 WrapperNode [2018-11-07 14:53:16,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:16,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:16,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:53:16,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:53:16,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:17,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:53:17,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:53:17,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:53:17,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... [2018-11-07 14:53:17,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:53:17,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:53:17,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:53:17,728 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:53:17,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:53:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:53:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:53:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:53:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:53:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:53:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:53:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:53:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:53:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:53:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:53:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:53:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:53:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:53:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:53:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:53:27,869 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:53:27,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:27 BoogieIcfgContainer [2018-11-07 14:53:27,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:53:27,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:53:27,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:53:27,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:53:27,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:53:14" (1/3) ... [2018-11-07 14:53:27,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:27, skipping insertion in model container [2018-11-07 14:53:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:16" (2/3) ... [2018-11-07 14:53:27,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:27, skipping insertion in model container [2018-11-07 14:53:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:27" (3/3) ... [2018-11-07 14:53:27,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-11-07 14:53:27,888 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:53:27,898 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:53:27,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:53:27,965 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:53:27,965 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:53:27,965 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:53:27,965 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:53:27,966 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:53:27,966 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:53:27,966 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:53:27,966 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:53:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:53:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-07 14:53:28,032 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:28,034 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] [2018-11-07 14:53:28,037 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:28,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1221067980, now seen corresponding path program 1 times [2018-11-07 14:53:28,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:28,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:28,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:28,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:28,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:28,563 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 14:53:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:28,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:28,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:53:28,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:28,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:53:28,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:53:28,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:53:28,611 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:53:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:41,600 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 14:53:41,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:53:41,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-07 14:53:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:41,648 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 14:53:41,649 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 14:53:41,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:53:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 14:53:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 14:53:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 14:53:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 14:53:41,876 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 42 [2018-11-07 14:53:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:41,877 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 14:53:41,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:53:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 14:53:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 14:53:41,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:41,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:53:41,889 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:41,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 894022032, now seen corresponding path program 1 times [2018-11-07 14:53:41,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:41,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:41,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:41,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:41,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:42,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:42,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:53:42,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:42,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:53:42,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:53:42,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:53:42,198 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 14:53:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:55,850 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 14:53:55,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:53:55,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-11-07 14:53:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:55,881 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 14:53:55,882 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 14:53:55,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:53:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 14:53:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 14:53:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 14:53:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 14:53:55,999 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 112 [2018-11-07 14:53:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:55,999 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 14:53:56,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:53:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 14:53:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 14:53:56,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:56,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:53:56,004 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:56,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -463864276, now seen corresponding path program 1 times [2018-11-07 14:53:56,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:56,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:56,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:56,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:56,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:56,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:56,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:53:56,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:56,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:53:56,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:53:56,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:53:56,289 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 14:54:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:05,749 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 14:54:05,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:54:05,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 14:54:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:05,790 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 14:54:05,791 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 14:54:05,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:54:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 14:54:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 14:54:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 14:54:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 14:54:06,018 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 114 [2018-11-07 14:54:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:06,020 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 14:54:06,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:54:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 14:54:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 14:54:06,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:06,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:06,030 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:06,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1460284852, now seen corresponding path program 1 times [2018-11-07 14:54:06,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:06,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:06,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:06,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:06,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:06,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:06,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:54:06,327 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:06,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:54:06,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:54:06,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:54:06,329 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 4 states. [2018-11-07 14:54:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:15,165 INFO L93 Difference]: Finished difference Result 27631 states and 43183 transitions. [2018-11-07 14:54:15,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:54:15,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-11-07 14:54:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:15,282 INFO L225 Difference]: With dead ends: 27631 [2018-11-07 14:54:15,282 INFO L226 Difference]: Without dead ends: 20470 [2018-11-07 14:54:15,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:54:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20470 states. [2018-11-07 14:54:15,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20470 to 20433. [2018-11-07 14:54:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20433 states. [2018-11-07 14:54:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 29059 transitions. [2018-11-07 14:54:15,845 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 29059 transitions. Word has length 158 [2018-11-07 14:54:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:15,846 INFO L480 AbstractCegarLoop]: Abstraction has 20433 states and 29059 transitions. [2018-11-07 14:54:15,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:54:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 29059 transitions. [2018-11-07 14:54:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-11-07 14:54:15,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:15,860 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:54:15,861 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:15,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1058546082, now seen corresponding path program 1 times [2018-11-07 14:54:15,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:15,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:15,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:15,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:15,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:16,260 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:16,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:54:16,352 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:54:16,353 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-11-07 14:54:16,355 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], [2863], [2865], [2868], [2876], [2884], [2892], [2900], [2908], [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], [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], [3308], [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 14:54:16,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:54:16,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:54:17,346 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:54:17,348 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 14:54:17,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:17,401 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:54:18,824 INFO L227 lantSequenceWeakener]: Weakened 249 states. On average, predicates are now at 71.32% of their original sizes. [2018-11-07 14:54:18,824 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:54:19,739 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-11-07 14:54:19,739 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:54:19,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:54:19,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 14:54:19,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:19,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:54:19,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:54:19,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:54:19,744 INFO L87 Difference]: Start difference. First operand 20433 states and 29059 transitions. Second operand 11 states. [2018-11-07 14:54:28,099 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