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/Problem11_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 19:48:27,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 19:48:27,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 19:48:27,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 19:48:27,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 19:48:27,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 19:48:27,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 19:48:27,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 19:48:27,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 19:48:27,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 19:48:27,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 19:48:27,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 19:48:27,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 19:48:27,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 19:48:27,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 19:48:27,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 19:48:27,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 19:48:27,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 19:48:27,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 19:48:27,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 19:48:27,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 19:48:27,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 19:48:27,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 19:48:27,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 19:48:27,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 19:48:27,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 19:48:27,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 19:48:27,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 19:48:27,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 19:48:27,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 19:48:27,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 19:48:27,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 19:48:27,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 19:48:27,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 19:48:27,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 19:48:27,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 19:48:27,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 19:48:27,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 19:48:27,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 19:48:27,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 19:48:27,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 19:48:27,864 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 [2019-10-02 19:48:27,879 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 19:48:27,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 19:48:27,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 19:48:27,880 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 19:48:27,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 19:48:27,881 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 19:48:27,881 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 19:48:27,881 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 19:48:27,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 19:48:27,882 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 19:48:27,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 19:48:27,882 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 19:48:27,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 19:48:27,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 19:48:27,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 19:48:27,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 19:48:27,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 19:48:27,884 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 19:48:27,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 19:48:27,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 19:48:27,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 19:48:27,884 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 19:48:27,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 19:48:27,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 19:48:27,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 19:48:27,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 19:48:27,885 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 19:48:27,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 19:48:27,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 19:48:27,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 19:48:27,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 19:48:27,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 19:48:27,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 19:48:27,932 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 19:48:27,932 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 19:48:27,933 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2019-10-02 19:48:28,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8445acfb/01c9a62b300442b09fffc6ec5b468b17/FLAG7663ff276 [2019-10-02 19:48:28,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 19:48:28,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label35.c [2019-10-02 19:48:28,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8445acfb/01c9a62b300442b09fffc6ec5b468b17/FLAG7663ff276 [2019-10-02 19:48:28,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8445acfb/01c9a62b300442b09fffc6ec5b468b17 [2019-10-02 19:48:28,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 19:48:28,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 19:48:28,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 19:48:28,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 19:48:28,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 19:48:28,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:48:28" (1/1) ... [2019-10-02 19:48:28,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2504eb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:28, skipping insertion in model container [2019-10-02 19:48:28,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:48:28" (1/1) ... [2019-10-02 19:48:28,842 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 19:48:28,912 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 19:48:29,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:48:29,672 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 19:48:29,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:48:30,012 INFO L192 MainTranslator]: Completed translation [2019-10-02 19:48:30,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30 WrapperNode [2019-10-02 19:48:30,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 19:48:30,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 19:48:30,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 19:48:30,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 19:48:30,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (1/1) ... [2019-10-02 19:48:30,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 19:48:30,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 19:48:30,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 19:48:30,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 19:48:30,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (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 [2019-10-02 19:48:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 19:48:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 19:48:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 19:48:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 19:48:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 19:48:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 19:48:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 19:48:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 19:48:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 19:48:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 19:48:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 19:48:31,953 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 19:48:31,954 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 19:48:31,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:48:31 BoogieIcfgContainer [2019-10-02 19:48:31,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 19:48:31,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 19:48:31,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 19:48:31,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 19:48:31,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 07:48:28" (1/3) ... [2019-10-02 19:48:31,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c33b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:48:31, skipping insertion in model container [2019-10-02 19:48:31,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:48:30" (2/3) ... [2019-10-02 19:48:31,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c33b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:48:31, skipping insertion in model container [2019-10-02 19:48:31,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:48:31" (3/3) ... [2019-10-02 19:48:31,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label35.c [2019-10-02 19:48:31,976 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 19:48:31,985 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 19:48:32,003 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 19:48:32,032 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 19:48:32,033 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 19:48:32,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 19:48:32,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 19:48:32,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 19:48:32,034 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 19:48:32,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 19:48:32,034 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 19:48:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-02 19:48:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-02 19:48:32,094 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:48:32,096 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:48:32,099 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:48:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:48:32,105 INFO L82 PathProgramCache]: Analyzing trace with hash 524759243, now seen corresponding path program 1 times [2019-10-02 19:48:32,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:48:32,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:32,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:48:32,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:32,172 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:48:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:48:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:48:32,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:48:32,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:48:32,591 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:48:32,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:48:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:48:32,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:48:32,614 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-02 19:48:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:48:34,738 INFO L93 Difference]: Finished difference Result 708 states and 1054 transitions. [2019-10-02 19:48:34,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:48:34,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2019-10-02 19:48:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:48:34,765 INFO L225 Difference]: With dead ends: 708 [2019-10-02 19:48:34,765 INFO L226 Difference]: Without dead ends: 620 [2019-10-02 19:48:34,767 INFO L640 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 [2019-10-02 19:48:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-02 19:48:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 614. [2019-10-02 19:48:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-02 19:48:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 908 transitions. [2019-10-02 19:48:34,878 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 908 transitions. Word has length 64 [2019-10-02 19:48:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:48:34,879 INFO L475 AbstractCegarLoop]: Abstraction has 614 states and 908 transitions. [2019-10-02 19:48:34,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:48:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 908 transitions. [2019-10-02 19:48:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-02 19:48:34,887 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:48:34,887 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 19:48:34,887 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:48:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:48:34,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1140309603, now seen corresponding path program 1 times [2019-10-02 19:48:34,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:48:34,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:34,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:48:34,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:34,890 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:48:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:48:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:48:35,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:48:35,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:48:35,097 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:48:35,099 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:48:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:48:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:48:35,100 INFO L87 Difference]: Start difference. First operand 614 states and 908 transitions. Second operand 4 states. [2019-10-02 19:48:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:48:37,014 INFO L93 Difference]: Finished difference Result 1767 states and 2530 transitions. [2019-10-02 19:48:37,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:48:37,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-02 19:48:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:48:37,035 INFO L225 Difference]: With dead ends: 1767 [2019-10-02 19:48:37,036 INFO L226 Difference]: Without dead ends: 1767 [2019-10-02 19:48:37,037 INFO L640 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 [2019-10-02 19:48:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2019-10-02 19:48:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1750. [2019-10-02 19:48:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-02 19:48:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2496 transitions. [2019-10-02 19:48:37,144 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2496 transitions. Word has length 137 [2019-10-02 19:48:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:48:37,148 INFO L475 AbstractCegarLoop]: Abstraction has 1750 states and 2496 transitions. [2019-10-02 19:48:37,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:48:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2496 transitions. [2019-10-02 19:48:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-02 19:48:37,163 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:48:37,164 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 19:48:37,164 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:48:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:48:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1496412874, now seen corresponding path program 1 times [2019-10-02 19:48:37,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:48:37,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:37,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:48:37,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:37,169 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:48:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:48:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:48:37,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:48:37,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 19:48:37,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:48:37,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 19:48:37,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 19:48:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 19:48:37,456 INFO L87 Difference]: Start difference. First operand 1750 states and 2496 transitions. Second operand 6 states. [2019-10-02 19:48:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:48:40,193 INFO L93 Difference]: Finished difference Result 4629 states and 7351 transitions. [2019-10-02 19:48:40,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 19:48:40,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2019-10-02 19:48:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:48:40,238 INFO L225 Difference]: With dead ends: 4629 [2019-10-02 19:48:40,238 INFO L226 Difference]: Without dead ends: 4629 [2019-10-02 19:48:40,239 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-02 19:48:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2019-10-02 19:48:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 3937. [2019-10-02 19:48:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2019-10-02 19:48:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 5685 transitions. [2019-10-02 19:48:40,423 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 5685 transitions. Word has length 162 [2019-10-02 19:48:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:48:40,424 INFO L475 AbstractCegarLoop]: Abstraction has 3937 states and 5685 transitions. [2019-10-02 19:48:40,424 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 19:48:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 5685 transitions. [2019-10-02 19:48:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-02 19:48:40,433 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:48:40,433 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:48:40,433 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:48:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:48:40,434 INFO L82 PathProgramCache]: Analyzing trace with hash -176162622, now seen corresponding path program 1 times [2019-10-02 19:48:40,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:48:40,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:40,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:48:40,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:40,436 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:48:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:48:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-02 19:48:40,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:48:40,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:48:40,607 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:48:40,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:48:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:48:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:48:40,609 INFO L87 Difference]: Start difference. First operand 3937 states and 5685 transitions. Second operand 4 states. [2019-10-02 19:48:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:48:42,098 INFO L93 Difference]: Finished difference Result 6456 states and 9207 transitions. [2019-10-02 19:48:42,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:48:42,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2019-10-02 19:48:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:48:42,139 INFO L225 Difference]: With dead ends: 6456 [2019-10-02 19:48:42,139 INFO L226 Difference]: Without dead ends: 6456 [2019-10-02 19:48:42,139 INFO L640 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 [2019-10-02 19:48:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2019-10-02 19:48:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5880. [2019-10-02 19:48:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5880 states. [2019-10-02 19:48:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 8312 transitions. [2019-10-02 19:48:42,343 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 8312 transitions. Word has length 227 [2019-10-02 19:48:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:48:42,343 INFO L475 AbstractCegarLoop]: Abstraction has 5880 states and 8312 transitions. [2019-10-02 19:48:42,344 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:48:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 8312 transitions. [2019-10-02 19:48:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-02 19:48:42,354 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:48:42,354 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:48:42,354 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:48:42,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:48:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1301706544, now seen corresponding path program 1 times [2019-10-02 19:48:42,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:48:42,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:42,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:48:42,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:48:42,357 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:48:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:48:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:48:42,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 19:48:42,782 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 19:48:42,783 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2019-10-02 19:48:42,786 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-10-02 19:48:42,874 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 19:48:42,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 19:50:39,433 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 19:50:39,436 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Performed 247 root evaluator evaluations with a maximum evaluation depth of 17. Performed 247 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Never found a fixpoint. Largest state had 28 variables. [2019-10-02 19:50:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:50:39,439 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 19:52:38,186 INFO L227 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 74.02% of their original sizes. [2019-10-02 19:52:38,187 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 19:52:38,308 INFO L420 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2019-10-02 19:52:38,308 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 19:52:38,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 19:52:38,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2019-10-02 19:52:38,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:52:38,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 19:52:38,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 19:52:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 19:52:38,311 INFO L87 Difference]: Start difference. First operand 5880 states and 8312 transitions. Second operand 10 states.