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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:45:24,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:45:24,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:45:24,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 23:45:24,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 23:45:24,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 23:45:24,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 23:45:24,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 23:45:24,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 23:45:24,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 23:45:24,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 23:45:24,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 23:45:24,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:45:24,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:45:24,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:45:24,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:45:24,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:45:24,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:45:24,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:45:24,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:45:24,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:45:24,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:45:24,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:45:24,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:45:24,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 23:45:24,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:45:24,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:45:24,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:45:24,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:45:24,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:45:24,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:45:24,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:45:24,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:45:24,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:45:24,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:45:24,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:45:24,919 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 23:45:24,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:45:24,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:45:24,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:45:24,950 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:45:24,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:45:24,951 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:45:24,951 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:45:24,952 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:45:24,952 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:45:24,952 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:45:24,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:45:24,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:45:24,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:45:24,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:45:24,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:45:24,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:45:24,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:45:24,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:45:24,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:45:24,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:45:24,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:45:24,956 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:45:24,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:45:24,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:45:24,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:45:24,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:45:24,958 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:45:24,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:45:24,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:45:24,958 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:45:25,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:45:25,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:45:25,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:45:25,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:45:25,032 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:45:25,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label53.c [2019-09-09 23:45:25,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a8bf0aa0/9fb1eb03425746bdb418d9b6f58f4b70/FLAGdca7e5ea8 [2019-09-09 23:45:25,962 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:45:25,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label53.c [2019-09-09 23:45:26,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a8bf0aa0/9fb1eb03425746bdb418d9b6f58f4b70/FLAGdca7e5ea8 [2019-09-09 23:45:26,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a8bf0aa0/9fb1eb03425746bdb418d9b6f58f4b70 [2019-09-09 23:45:26,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:45:26,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:45:26,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:45:26,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:45:26,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:45:26,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:45:26" (1/1) ... [2019-09-09 23:45:26,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6072a93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:26, skipping insertion in model container [2019-09-09 23:45:26,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:45:26" (1/1) ... [2019-09-09 23:45:26,470 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:45:26,709 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:45:28,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:45:28,801 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:45:30,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:45:30,054 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:45:30,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30 WrapperNode [2019-09-09 23:45:30,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:45:30,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:45:30,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:45:30,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:45:30,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (1/1) ... [2019-09-09 23:45:30,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:45:30,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:45:30,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:45:30,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:45:30,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (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 23:45:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:45:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:45:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:45:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:45:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:45:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:45:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:45:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:45:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:45:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:45:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:45:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:45:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:45:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:45:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:45:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:45:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:45:42,149 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:45:42,149 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:45:42,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:45:42 BoogieIcfgContainer [2019-09-09 23:45:42,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:45:42,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:45:42,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:45:42,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:45:42,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:45:26" (1/3) ... [2019-09-09 23:45:42,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:45:42, skipping insertion in model container [2019-09-09 23:45:42,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:45:30" (2/3) ... [2019-09-09 23:45:42,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:45:42, skipping insertion in model container [2019-09-09 23:45:42,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:45:42" (3/3) ... [2019-09-09 23:45:42,167 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label53.c [2019-09-09 23:45:42,177 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:45:42,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:45:42,206 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:45:42,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:45:42,237 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:45:42,237 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:45:42,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:45:42,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:45:42,237 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:45:42,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:45:42,238 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:45:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:45:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-09 23:45:42,304 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:45:42,305 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:45:42,308 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:45:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:45:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1647023956, now seen corresponding path program 1 times [2019-09-09 23:45:42,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:45:42,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:45:42,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:45:42,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:45:42,362 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:45:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:45:42,601 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 23:45:42,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:45:42,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:45:42,604 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:45:42,610 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:45:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:45:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:45:42,628 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-09 23:46:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:46:00,333 INFO L93 Difference]: Finished difference Result 4735 states and 7420 transitions. [2019-09-09 23:46:00,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:46:00,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-09 23:46:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:46:00,379 INFO L225 Difference]: With dead ends: 4735 [2019-09-09 23:46:00,379 INFO L226 Difference]: Without dead ends: 4647 [2019-09-09 23:46:00,381 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 23:46:00,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2019-09-09 23:46:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4608. [2019-09-09 23:46:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2019-09-09 23:46:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7227 transitions. [2019-09-09 23:46:00,572 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7227 transitions. Word has length 17 [2019-09-09 23:46:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:46:00,573 INFO L475 AbstractCegarLoop]: Abstraction has 4608 states and 7227 transitions. [2019-09-09 23:46:00,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:46:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7227 transitions. [2019-09-09 23:46:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-09 23:46:00,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:46:00,578 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:46:00,578 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:46:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:46:00,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1514961664, now seen corresponding path program 1 times [2019-09-09 23:46:00,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:46:00,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:00,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:46:00,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:00,580 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:46:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:46:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:46:00,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:46:00,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:46:00,831 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:46:00,833 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:46:00,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:46:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:46:00,835 INFO L87 Difference]: Start difference. First operand 4608 states and 7227 transitions. Second operand 6 states. [2019-09-09 23:46:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:46:17,215 INFO L93 Difference]: Finished difference Result 9029 states and 13933 transitions. [2019-09-09 23:46:17,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:46:17,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-09 23:46:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:46:17,268 INFO L225 Difference]: With dead ends: 9029 [2019-09-09 23:46:17,269 INFO L226 Difference]: Without dead ends: 9029 [2019-09-09 23:46:17,269 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 23:46:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2019-09-09 23:46:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8961. [2019-09-09 23:46:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8961 states. [2019-09-09 23:46:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 13764 transitions. [2019-09-09 23:46:17,647 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 13764 transitions. Word has length 88 [2019-09-09 23:46:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:46:17,648 INFO L475 AbstractCegarLoop]: Abstraction has 8961 states and 13764 transitions. [2019-09-09 23:46:17,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:46:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 13764 transitions. [2019-09-09 23:46:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-09 23:46:17,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:46:17,659 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:46:17,661 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:46:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:46:17,662 INFO L82 PathProgramCache]: Analyzing trace with hash -346853431, now seen corresponding path program 1 times [2019-09-09 23:46:17,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:46:17,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:17,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:46:17,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:17,664 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:46:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:46:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:46:17,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:46:17,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:46:17,847 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:46:17,848 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:46:17,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:46:17,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:46:17,853 INFO L87 Difference]: Start difference. First operand 8961 states and 13764 transitions. Second operand 6 states. [2019-09-09 23:46:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:46:33,780 INFO L93 Difference]: Finished difference Result 18033 states and 28503 transitions. [2019-09-09 23:46:33,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:46:33,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-09-09 23:46:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:46:33,866 INFO L225 Difference]: With dead ends: 18033 [2019-09-09 23:46:33,866 INFO L226 Difference]: Without dead ends: 18033 [2019-09-09 23:46:33,866 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 23:46:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2019-09-09 23:46:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17865. [2019-09-09 23:46:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17865 states. [2019-09-09 23:46:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 27911 transitions. [2019-09-09 23:46:34,278 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 27911 transitions. Word has length 90 [2019-09-09 23:46:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:46:34,279 INFO L475 AbstractCegarLoop]: Abstraction has 17865 states and 27911 transitions. [2019-09-09 23:46:34,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:46:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 27911 transitions. [2019-09-09 23:46:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-09 23:46:34,283 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:46:34,284 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:46:34,284 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:46:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:46:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1430446082, now seen corresponding path program 1 times [2019-09-09 23:46:34,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:46:34,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:34,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:46:34,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:34,286 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:46:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:46:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:46:34,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:46:34,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:46:34,472 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:46:34,473 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:46:34,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:46:34,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:46:34,475 INFO L87 Difference]: Start difference. First operand 17865 states and 27911 transitions. Second operand 6 states. [2019-09-09 23:46:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:46:50,528 INFO L93 Difference]: Finished difference Result 36459 states and 57704 transitions. [2019-09-09 23:46:50,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 23:46:50,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-09 23:46:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:46:50,651 INFO L225 Difference]: With dead ends: 36459 [2019-09-09 23:46:50,651 INFO L226 Difference]: Without dead ends: 36459 [2019-09-09 23:46:50,651 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 23:46:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36459 states. [2019-09-09 23:46:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36459 to 36139. [2019-09-09 23:46:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36139 states. [2019-09-09 23:46:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36139 states to 36139 states and 56221 transitions. [2019-09-09 23:46:51,605 INFO L78 Accepts]: Start accepts. Automaton has 36139 states and 56221 transitions. Word has length 98 [2019-09-09 23:46:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:46:51,606 INFO L475 AbstractCegarLoop]: Abstraction has 36139 states and 56221 transitions. [2019-09-09 23:46:51,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:46:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 36139 states and 56221 transitions. [2019-09-09 23:46:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-09 23:46:51,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:46:51,613 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:46:51,613 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:46:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:46:51,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1707139928, now seen corresponding path program 1 times [2019-09-09 23:46:51,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:46:51,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:51,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:46:51,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:46:51,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:46:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:46:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:46:51,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:46:51,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:46:51,753 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:46:51,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:46:51,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:46:51,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:46:51,755 INFO L87 Difference]: Start difference. First operand 36139 states and 56221 transitions. Second operand 5 states. [2019-09-09 23:47:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:47:10,462 INFO L93 Difference]: Finished difference Result 72026 states and 104994 transitions. [2019-09-09 23:47:10,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:47:10,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2019-09-09 23:47:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:47:10,725 INFO L225 Difference]: With dead ends: 72026 [2019-09-09 23:47:10,726 INFO L226 Difference]: Without dead ends: 72026 [2019-09-09 23:47:10,726 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:47:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72026 states. [2019-09-09 23:47:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72026 to 66889. [2019-09-09 23:47:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66889 states. [2019-09-09 23:47:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66889 states to 66889 states and 97062 transitions. [2019-09-09 23:47:12,518 INFO L78 Accepts]: Start accepts. Automaton has 66889 states and 97062 transitions. Word has length 118 [2019-09-09 23:47:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:47:12,520 INFO L475 AbstractCegarLoop]: Abstraction has 66889 states and 97062 transitions. [2019-09-09 23:47:12,520 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:47:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 66889 states and 97062 transitions. [2019-09-09 23:47:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-09 23:47:12,522 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:47:12,523 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:47:12,523 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:47:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:47:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -885522213, now seen corresponding path program 1 times [2019-09-09 23:47:12,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:47:12,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:12,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:47:12,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:12,528 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:47:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:47:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:47:12,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:47:12,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:47:12,733 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:47:12,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:47:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:47:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:47:12,734 INFO L87 Difference]: Start difference. First operand 66889 states and 97062 transitions. Second operand 6 states. [2019-09-09 23:47:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:47:27,956 INFO L93 Difference]: Finished difference Result 98346 states and 143906 transitions. [2019-09-09 23:47:27,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:47:27,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2019-09-09 23:47:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:47:29,962 INFO L225 Difference]: With dead ends: 98346 [2019-09-09 23:47:29,963 INFO L226 Difference]: Without dead ends: 98346 [2019-09-09 23:47:29,963 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 23:47:30,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98346 states. [2019-09-09 23:47:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98346 to 96348. [2019-09-09 23:47:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96348 states. [2019-09-09 23:47:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96348 states to 96348 states and 136864 transitions. [2019-09-09 23:47:31,527 INFO L78 Accepts]: Start accepts. Automaton has 96348 states and 136864 transitions. Word has length 181 [2019-09-09 23:47:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:47:31,528 INFO L475 AbstractCegarLoop]: Abstraction has 96348 states and 136864 transitions. [2019-09-09 23:47:31,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:47:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 96348 states and 136864 transitions. [2019-09-09 23:47:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2019-09-09 23:47:31,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:47:31,542 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:31,543 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:47:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:47:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1142609378, now seen corresponding path program 1 times [2019-09-09 23:47:31,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:47:31,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:31,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:47:31,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:31,545 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:47:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:47:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:47:32,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:47:32,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:47:32,351 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:47:32,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:47:32,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:47:32,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:47:32,353 INFO L87 Difference]: Start difference. First operand 96348 states and 136864 transitions. Second operand 4 states. [2019-09-09 23:47:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:47:48,667 INFO L93 Difference]: Finished difference Result 129117 states and 168841 transitions. [2019-09-09 23:47:48,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:47:48,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 610 [2019-09-09 23:47:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:47:49,007 INFO L225 Difference]: With dead ends: 129117 [2019-09-09 23:47:49,007 INFO L226 Difference]: Without dead ends: 129117 [2019-09-09 23:47:49,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 23:47:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129117 states. [2019-09-09 23:47:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129117 to 123483. [2019-09-09 23:47:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123483 states. [2019-09-09 23:47:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123483 states to 123483 states and 162726 transitions. [2019-09-09 23:47:50,469 INFO L78 Accepts]: Start accepts. Automaton has 123483 states and 162726 transitions. Word has length 610 [2019-09-09 23:47:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:47:50,471 INFO L475 AbstractCegarLoop]: Abstraction has 123483 states and 162726 transitions. [2019-09-09 23:47:50,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:47:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 123483 states and 162726 transitions. [2019-09-09 23:47:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2019-09-09 23:47:50,497 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:47:50,498 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:50,499 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:47:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:47:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1741042892, now seen corresponding path program 1 times [2019-09-09 23:47:50,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:47:50,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:50,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:47:50,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:47:50,502 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:47:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:47:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 130 proven. 69 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-09-09 23:47:52,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:47:52,188 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:47:52,190 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 780 with the following transitions: [2019-09-09 23:47:52,195 INFO L207 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5270], [5272], [5275], [5283], [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], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6815], [6819], [6821], [6832], [6833], [6834], [6835], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:47:52,283 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:47:52,284 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:49:23,888 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:49:23,890 INFO L272 AbstractInterpreter]: Visited 591 different actions 591 times. Never merged. Never widened. Performed 1166 root evaluator evaluations with a maximum evaluation depth of 15. Performed 1166 inverse root evaluator evaluations with a maximum inverse evaluation depth of 15. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:49:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:49:23,894 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:50:32,395 INFO L227 lantSequenceWeakener]: Weakened 745 states. On average, predicates are now at 75.02% of their original sizes. [2019-09-09 23:50:32,395 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:50:32,643 INFO L420 sIntCurrentIteration]: We unified 778 AI predicates to 778 [2019-09-09 23:50:32,643 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:50:32,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:50:32,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2019-09-09 23:50:32,645 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:50:32,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-09 23:50:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-09 23:50:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-09-09 23:50:32,647 INFO L87 Difference]: Start difference. First operand 123483 states and 162726 transitions. Second operand 17 states.