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/Problem03_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:59:53,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:59:53,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:59:53,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:59:53,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:59:53,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:59:53,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:59:53,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:59:53,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:59:53,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:59:53,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:59:53,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:59:53,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:59:53,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:59:53,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:59:53,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:59:53,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:59:53,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 17:59:53,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 17:59:53,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 17:59:53,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 17:59:53,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 17:59:53,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 17:59:53,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 17:59:53,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 17:59:53,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 17:59:53,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 17:59:53,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 17:59:53,921 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 17:59:53,943 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:59:53,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:59:53,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:59:53,945 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:59:53,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:59:53,946 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:59:53,946 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:59:53,946 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:59:53,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:59:53,948 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:59:53,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:59:53,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:59:53,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:59:53,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:59:53,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:59:53,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:59:53,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:59:53,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:59:53,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:59:53,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:59:53,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:59:53,955 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:59:53,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:59:53,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:59:53,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:59:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:59:53,958 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:59:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:59:53,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:59:53,958 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:59:53,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:59:54,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:59:54,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:59:54,004 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:59:54,005 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:59:54,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-02 17:59:54,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6982bf721/a1bce010e492403f9cb8f2992e45e8d1/FLAGdf4f4bc39 [2019-10-02 17:59:54,741 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:59:54,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-02 17:59:54,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6982bf721/a1bce010e492403f9cb8f2992e45e8d1/FLAGdf4f4bc39 [2019-10-02 17:59:54,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6982bf721/a1bce010e492403f9cb8f2992e45e8d1 [2019-10-02 17:59:54,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:59:54,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:59:54,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:59:54,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:59:54,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:59:54,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:59:54" (1/1) ... [2019-10-02 17:59:54,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce2b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:54, skipping insertion in model container [2019-10-02 17:59:54,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:59:54" (1/1) ... [2019-10-02 17:59:54,969 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:59:55,059 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:59:55,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:59:55,835 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:59:56,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:59:56,136 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:59:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56 WrapperNode [2019-10-02 17:59:56,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:59:56,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:59:56,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:59:56,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:59:56,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (1/1) ... [2019-10-02 17:59:56,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:59:56,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:59:56,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:59:56,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:59:56,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (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 17:59:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:59:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:59:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:59:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:59:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:59:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:59:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:59:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:59:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:59:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:59:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:59:58,430 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:59:58,430 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:59:58,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:59:58 BoogieIcfgContainer [2019-10-02 17:59:58,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:59:58,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:59:58,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:59:58,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:59:58,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:59:54" (1/3) ... [2019-10-02 17:59:58,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:59:58, skipping insertion in model container [2019-10-02 17:59:58,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:59:56" (2/3) ... [2019-10-02 17:59:58,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:59:58, skipping insertion in model container [2019-10-02 17:59:58,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:59:58" (3/3) ... [2019-10-02 17:59:58,441 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2019-10-02 17:59:58,453 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:59:58,462 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:59:58,479 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:59:58,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:59:58,513 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:59:58,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:59:58,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:59:58,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:59:58,513 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:59:58,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:59:58,514 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:59:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-02 17:59:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-02 17:59:58,564 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:59:58,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:58,568 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:59:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:59:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1898680923, now seen corresponding path program 1 times [2019-10-02 17:59:58,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:59:58,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:59:58,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:59:58,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:59:58,638 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:59:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:59:59,559 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 17:59:59,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:59:59,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 17:59:59,562 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:59:59,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 17:59:59,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 17:59:59,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 17:59:59,587 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-10-02 18:00:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:00:01,927 INFO L93 Difference]: Finished difference Result 765 states and 1280 transitions. [2019-10-02 18:00:01,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 18:00:01,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2019-10-02 18:00:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:00:01,955 INFO L225 Difference]: With dead ends: 765 [2019-10-02 18:00:01,956 INFO L226 Difference]: Without dead ends: 677 [2019-10-02 18:00:01,958 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 18:00:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-10-02 18:00:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 458. [2019-10-02 18:00:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-10-02 18:00:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 752 transitions. [2019-10-02 18:00:02,042 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 752 transitions. Word has length 190 [2019-10-02 18:00:02,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:00:02,044 INFO L475 AbstractCegarLoop]: Abstraction has 458 states and 752 transitions. [2019-10-02 18:00:02,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 18:00:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 752 transitions. [2019-10-02 18:00:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-02 18:00:02,051 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:00:02,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:02,052 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:00:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:00:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1068911710, now seen corresponding path program 1 times [2019-10-02 18:00:02,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:00:02,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:02,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:00:02,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:02,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:00:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:00:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:00:02,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:00:02,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 18:00:02,317 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:00:02,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 18:00:02,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 18:00:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 18:00:02,320 INFO L87 Difference]: Start difference. First operand 458 states and 752 transitions. Second operand 6 states. [2019-10-02 18:00:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:00:03,823 INFO L93 Difference]: Finished difference Result 902 states and 1338 transitions. [2019-10-02 18:00:03,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 18:00:03,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2019-10-02 18:00:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:00:03,840 INFO L225 Difference]: With dead ends: 902 [2019-10-02 18:00:03,841 INFO L226 Difference]: Without dead ends: 902 [2019-10-02 18:00:03,842 INFO L640 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 [2019-10-02 18:00:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-02 18:00:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 885. [2019-10-02 18:00:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-10-02 18:00:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1304 transitions. [2019-10-02 18:00:03,909 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1304 transitions. Word has length 217 [2019-10-02 18:00:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:00:03,910 INFO L475 AbstractCegarLoop]: Abstraction has 885 states and 1304 transitions. [2019-10-02 18:00:03,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 18:00:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1304 transitions. [2019-10-02 18:00:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-02 18:00:03,920 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:00:03,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:03,921 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:00:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:00:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash 880538771, now seen corresponding path program 1 times [2019-10-02 18:00:03,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:00:03,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:03,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:00:03,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:03,928 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:00:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:00:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:00:04,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:00:04,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 18:00:04,298 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:00:04,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 18:00:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 18:00:04,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 18:00:04,300 INFO L87 Difference]: Start difference. First operand 885 states and 1304 transitions. Second operand 4 states. [2019-10-02 18:00:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:00:06,196 INFO L93 Difference]: Finished difference Result 2371 states and 3410 transitions. [2019-10-02 18:00:06,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 18:00:06,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2019-10-02 18:00:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:00:06,218 INFO L225 Difference]: With dead ends: 2371 [2019-10-02 18:00:06,219 INFO L226 Difference]: Without dead ends: 2371 [2019-10-02 18:00:06,220 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 18:00:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2019-10-02 18:00:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2352. [2019-10-02 18:00:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2019-10-02 18:00:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3372 transitions. [2019-10-02 18:00:06,323 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3372 transitions. Word has length 235 [2019-10-02 18:00:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:00:06,334 INFO L475 AbstractCegarLoop]: Abstraction has 2352 states and 3372 transitions. [2019-10-02 18:00:06,334 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 18:00:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3372 transitions. [2019-10-02 18:00:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-02 18:00:06,351 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:00:06,351 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, 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] [2019-10-02 18:00:06,351 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:00:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:00:06,352 INFO L82 PathProgramCache]: Analyzing trace with hash -597819644, now seen corresponding path program 1 times [2019-10-02 18:00:06,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:00:06,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:06,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:00:06,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:00:06,354 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:00:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:00:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:00:06,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 18:00:06,666 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 18:00:06,667 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2019-10-02 18:00:06,670 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [989], [991], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-10-02 18:00:06,761 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 18:00:06,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)