java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:48:34,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:48:34,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:48:34,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 23:48:34,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 23:48:34,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 23:48:34,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 23:48:34,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 23:48:34,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 23:48:34,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 23:48:34,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 23:48:34,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 23:48:34,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:48:34,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:48:34,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:48:34,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:48:34,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:48:34,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:48:34,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:48:34,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:48:34,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:48:34,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:48:34,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:48:34,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:48:34,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 23:48:34,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:48:34,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:48:34,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:48:34,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:48:34,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:48:34,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:48:34,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:48:34,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:48:34,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:48:34,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:48:34,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:48:34,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 23:48:34,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:48:34,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:48:34,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:48:34,746 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:48:34,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:48:34,747 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:48:34,748 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:48:34,748 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:48:34,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:48:34,748 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:48:34,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:48:34,749 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:48:34,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:48:34,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:48:34,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:48:34,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:48:34,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:48:34,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:48:34,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:48:34,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:48:34,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:48:34,752 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:48:34,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:48:34,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:48:34,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:48:34,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:48:34,753 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:48:34,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:48:34,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:48:34,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:48:34,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:48:34,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:48:34,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:48:34,805 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:48:34,805 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:48:34,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2019-09-09 23:48:34,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb1b9fbe/7281f9d934d84503b84493861bef0474/FLAG1accf0880 [2019-09-09 23:48:35,805 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:48:35,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2019-09-09 23:48:35,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb1b9fbe/7281f9d934d84503b84493861bef0474/FLAG1accf0880 [2019-09-09 23:48:36,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb1b9fbe/7281f9d934d84503b84493861bef0474 [2019-09-09 23:48:36,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:48:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:48:36,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:48:36,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:48:36,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:48:36,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:48:36" (1/1) ... [2019-09-09 23:48:36,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8a2e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:36, skipping insertion in model container [2019-09-09 23:48:36,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:48:36" (1/1) ... [2019-09-09 23:48:36,268 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:48:36,468 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:48:38,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:48:38,853 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:48:40,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:48:40,138 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:48:40,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40 WrapperNode [2019-09-09 23:48:40,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:48:40,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:48:40,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:48:40,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:48:40,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (1/1) ... [2019-09-09 23:48:40,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:48:40,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:48:40,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:48:40,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:48:40,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (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 [2019-09-09 23:48:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:48:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:48:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:48:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:48:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:48:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:48:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:48:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:48:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:48:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:48:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:48:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:48:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:48:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:48:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:48:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:48:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:48:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:48:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:48:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:48:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:48:51,256 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:48:51,256 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:48:51,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:48:51 BoogieIcfgContainer [2019-09-09 23:48:51,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:48:51,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:48:51,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:48:51,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:48:51,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:48:36" (1/3) ... [2019-09-09 23:48:51,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc5a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:48:51, skipping insertion in model container [2019-09-09 23:48:51,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:48:40" (2/3) ... [2019-09-09 23:48:51,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc5a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:48:51, skipping insertion in model container [2019-09-09 23:48:51,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:48:51" (3/3) ... [2019-09-09 23:48:51,284 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label58.c [2019-09-09 23:48:51,295 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:48:51,305 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:48:51,323 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:48:51,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:48:51,354 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:48:51,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:48:51,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:48:51,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:48:51,354 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:48:51,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:48:51,355 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:48:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:48:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-09 23:48:51,417 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:48:51,418 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:48:51,420 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:48:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:48:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2053208436, now seen corresponding path program 1 times [2019-09-09 23:48:51,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:48:51,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:48:51,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:48:51,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:48:51,482 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:48:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:48:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:48:51,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:48:51,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:48:51,654 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:48:51,660 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:48:51,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:48:51,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:48:51,678 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-09 23:49:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:49:11,908 INFO L93 Difference]: Finished difference Result 4738 states and 7738 transitions. [2019-09-09 23:49:11,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:49:11,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-09-09 23:49:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:49:11,958 INFO L225 Difference]: With dead ends: 4738 [2019-09-09 23:49:11,958 INFO L226 Difference]: Without dead ends: 4650 [2019-09-09 23:49:11,960 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:49:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2019-09-09 23:49:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4614. [2019-09-09 23:49:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4614 states. [2019-09-09 23:49:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7534 transitions. [2019-09-09 23:49:12,173 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7534 transitions. Word has length 19 [2019-09-09 23:49:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:49:12,174 INFO L475 AbstractCegarLoop]: Abstraction has 4614 states and 7534 transitions. [2019-09-09 23:49:12,174 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:49:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7534 transitions. [2019-09-09 23:49:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-09 23:49:12,182 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:49:12,182 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:49:12,182 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:49:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:49:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1194611480, now seen corresponding path program 1 times [2019-09-09 23:49:12,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:49:12,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:12,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:49:12,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:12,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:49:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:49:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:49:12,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:49:12,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:49:12,454 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:49:12,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:49:12,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:49:12,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:49:12,456 INFO L87 Difference]: Start difference. First operand 4614 states and 7534 transitions. Second operand 6 states. [2019-09-09 23:49:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:49:27,530 INFO L93 Difference]: Finished difference Result 9034 states and 14501 transitions. [2019-09-09 23:49:27,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:49:27,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-09-09 23:49:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:49:27,582 INFO L225 Difference]: With dead ends: 9034 [2019-09-09 23:49:27,582 INFO L226 Difference]: Without dead ends: 9034 [2019-09-09 23:49:27,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:49:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2019-09-09 23:49:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 8968. [2019-09-09 23:49:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2019-09-09 23:49:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 14334 transitions. [2019-09-09 23:49:27,843 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 14334 transitions. Word has length 90 [2019-09-09 23:49:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:49:27,844 INFO L475 AbstractCegarLoop]: Abstraction has 8968 states and 14334 transitions. [2019-09-09 23:49:27,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:49:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 14334 transitions. [2019-09-09 23:49:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-09 23:49:27,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:49:27,857 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:49:27,858 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:49:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:49:27,859 INFO L82 PathProgramCache]: Analyzing trace with hash 270772074, now seen corresponding path program 1 times [2019-09-09 23:49:27,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:49:27,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:27,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:49:27,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:27,861 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:49:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:49:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:49:28,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:49:28,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:49:28,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:49:28,068 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:49:28,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:49:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:49:28,072 INFO L87 Difference]: Start difference. First operand 8968 states and 14334 transitions. Second operand 6 states. [2019-09-09 23:49:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:49:43,590 INFO L93 Difference]: Finished difference Result 18349 states and 29030 transitions. [2019-09-09 23:49:43,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 23:49:43,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-09-09 23:49:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:49:43,661 INFO L225 Difference]: With dead ends: 18349 [2019-09-09 23:49:43,661 INFO L226 Difference]: Without dead ends: 18349 [2019-09-09 23:49:43,662 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:49:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2019-09-09 23:49:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18120. [2019-09-09 23:49:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18120 states. [2019-09-09 23:49:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18120 states to 18120 states and 28424 transitions. [2019-09-09 23:49:44,099 INFO L78 Accepts]: Start accepts. Automaton has 18120 states and 28424 transitions. Word has length 100 [2019-09-09 23:49:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:49:44,100 INFO L475 AbstractCegarLoop]: Abstraction has 18120 states and 28424 transitions. [2019-09-09 23:49:44,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:49:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 18120 states and 28424 transitions. [2019-09-09 23:49:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-09 23:49:44,103 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:49:44,103 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:49:44,103 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:49:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:49:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1999205750, now seen corresponding path program 1 times [2019-09-09 23:49:44,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:49:44,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:44,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:49:44,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:44,106 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:49:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:49:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:49:44,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:49:44,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:49:44,304 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:49:44,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:49:44,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:49:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:49:44,307 INFO L87 Difference]: Start difference. First operand 18120 states and 28424 transitions. Second operand 6 states. [2019-09-09 23:49:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:49:58,015 INFO L93 Difference]: Finished difference Result 27417 states and 41859 transitions. [2019-09-09 23:49:58,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:49:58,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-09-09 23:49:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:49:58,119 INFO L225 Difference]: With dead ends: 27417 [2019-09-09 23:49:58,119 INFO L226 Difference]: Without dead ends: 27417 [2019-09-09 23:49:58,120 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:49:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27417 states. [2019-09-09 23:49:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27417 to 27276. [2019-09-09 23:49:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27276 states. [2019-09-09 23:49:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 41293 transitions. [2019-09-09 23:49:58,676 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 41293 transitions. Word has length 133 [2019-09-09 23:49:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:49:58,677 INFO L475 AbstractCegarLoop]: Abstraction has 27276 states and 41293 transitions. [2019-09-09 23:49:58,677 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:49:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 41293 transitions. [2019-09-09 23:49:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-09 23:49:58,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:49:58,681 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:49:58,681 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:49:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:49:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1058674872, now seen corresponding path program 1 times [2019-09-09 23:49:58,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:49:58,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:58,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:49:58,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:49:58,683 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:49:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:49:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:49:58,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:49:58,884 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:49:58,885 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2019-09-09 23:49:58,889 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5286], [5288], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:49:58,963 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:49:58,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:50:02,494 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:50:02,496 INFO L272 AbstractInterpreter]: Visited 83 different actions 83 times. Never merged. Never widened. Performed 210 root evaluator evaluations with a maximum evaluation depth of 12. Performed 210 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:50:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:50:02,501 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:50:04,916 INFO L227 lantSequenceWeakener]: Weakened 147 states. On average, predicates are now at 75.2% of their original sizes. [2019-09-09 23:50:04,916 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:50:04,995 INFO L420 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2019-09-09 23:50:04,996 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:50:04,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:50:04,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:50:04,997 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:50:04,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:50:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:50:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:50:04,998 INFO L87 Difference]: Start difference. First operand 27276 states and 41293 transitions. Second operand 10 states. [2019-09-09 23:53:25,953 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.