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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:40,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:40,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:40,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:30:40,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:40,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:40,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:40,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:40,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:40,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:40,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:40,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:40,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:40,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:40,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:40,225 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 16:30:40,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:40,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:40,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:40,248 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:40,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:40,249 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:40,249 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:40,249 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:40,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:40,250 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:40,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:40,252 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:40,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:40,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:40,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:40,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:40,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:40,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:40,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:40,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:40,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:40,255 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:40,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:40,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:40,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:40,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:40,257 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:40,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:40,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:40,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:40,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:40,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:40,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:40,337 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:40,338 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:40,339 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-02 16:30:40,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c087f838/55115fa6b15946ba8cd9e195e93d22fa/FLAGfb12e979c [2019-10-02 16:30:40,896 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:40,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-02 16:30:40,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c087f838/55115fa6b15946ba8cd9e195e93d22fa/FLAGfb12e979c [2019-10-02 16:30:41,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c087f838/55115fa6b15946ba8cd9e195e93d22fa [2019-10-02 16:30:41,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:41,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:41,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:41,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:41,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:41,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc689a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41, skipping insertion in model container [2019-10-02 16:30:41,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,178 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:41,237 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:41,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:41,761 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:41,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:41,920 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:41,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41 WrapperNode [2019-10-02 16:30:41,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:41,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:41,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:41,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:41,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:42,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:42,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:42,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:42,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:42,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:42,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:42,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (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 16:30:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 16:30:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:43,298 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:43,299 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 16:30:43,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:43 BoogieIcfgContainer [2019-10-02 16:30:43,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:43,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:43,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:43,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:43,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:41" (1/3) ... [2019-10-02 16:30:43,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc12b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:43, skipping insertion in model container [2019-10-02 16:30:43,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (2/3) ... [2019-10-02 16:30:43,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc12b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:43, skipping insertion in model container [2019-10-02 16:30:43,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:43" (3/3) ... [2019-10-02 16:30:43,309 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2019-10-02 16:30:43,320 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:43,328 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:43,346 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:43,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:43,382 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:43,382 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:43,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:43,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:43,383 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:43,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:43,383 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 16:30:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-02 16:30:43,436 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:43,437 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] [2019-10-02 16:30:43,439 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:43,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1904695938, now seen corresponding path program 1 times [2019-10-02 16:30:43,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:43,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:43,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:43,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:43,495 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:43,994 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 16:30:43,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:43,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:43,998 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:44,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:44,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:44,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:44,027 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-02 16:30:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:44,982 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2019-10-02 16:30:44,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:44,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-02 16:30:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:45,013 INFO L225 Difference]: With dead ends: 346 [2019-10-02 16:30:45,013 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 16:30:45,016 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 16:30:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 16:30:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 16:30:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-10-02 16:30:45,122 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 100 [2019-10-02 16:30:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:45,123 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-10-02 16:30:45,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-10-02 16:30:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-02 16:30:45,129 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:45,130 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 16:30:45,130 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1236531093, now seen corresponding path program 1 times [2019-10-02 16:30:45,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:45,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:45,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:45,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:45,133 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:45,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:45,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:30:45,275 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:45,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:30:45,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:30:45,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:45,278 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-10-02 16:30:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:46,288 INFO L93 Difference]: Finished difference Result 431 states and 612 transitions. [2019-10-02 16:30:46,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:30:46,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-02 16:30:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:46,298 INFO L225 Difference]: With dead ends: 431 [2019-10-02 16:30:46,299 INFO L226 Difference]: Without dead ends: 431 [2019-10-02 16:30:46,300 INFO L640 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 [2019-10-02 16:30:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-02 16:30:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-10-02 16:30:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-02 16:30:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2019-10-02 16:30:46,338 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 110 [2019-10-02 16:30:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:46,338 INFO L475 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2019-10-02 16:30:46,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:30:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2019-10-02 16:30:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-02 16:30:46,346 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:46,347 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 16:30:46,347 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:46,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:46,348 INFO L82 PathProgramCache]: Analyzing trace with hash 235879383, now seen corresponding path program 1 times [2019-10-02 16:30:46,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:46,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:46,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:46,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:46,353 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:46,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:46,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:46,549 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:46,550 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:46,551 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand 3 states. [2019-10-02 16:30:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:47,096 INFO L93 Difference]: Finished difference Result 828 states and 1140 transitions. [2019-10-02 16:30:47,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:47,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-02 16:30:47,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:47,104 INFO L225 Difference]: With dead ends: 828 [2019-10-02 16:30:47,105 INFO L226 Difference]: Without dead ends: 828 [2019-10-02 16:30:47,105 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-10-02 16:30:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2019-10-02 16:30:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2019-10-02 16:30:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1140 transitions. [2019-10-02 16:30:47,141 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1140 transitions. Word has length 111 [2019-10-02 16:30:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:47,141 INFO L475 AbstractCegarLoop]: Abstraction has 828 states and 1140 transitions. [2019-10-02 16:30:47,142 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1140 transitions. [2019-10-02 16:30:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-02 16:30:47,145 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:47,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:47,146 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:47,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1258087941, now seen corresponding path program 1 times [2019-10-02 16:30:47,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:47,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:47,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:47,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:47,148 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:47,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:47,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:30:47,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:47,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:30:47,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:30:47,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:47,276 INFO L87 Difference]: Start difference. First operand 828 states and 1140 transitions. Second operand 6 states. [2019-10-02 16:30:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:48,170 INFO L93 Difference]: Finished difference Result 1428 states and 1972 transitions. [2019-10-02 16:30:48,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:30:48,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-10-02 16:30:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:48,185 INFO L225 Difference]: With dead ends: 1428 [2019-10-02 16:30:48,186 INFO L226 Difference]: Without dead ends: 1428 [2019-10-02 16:30:48,186 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 16:30:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2019-10-02 16:30:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1400. [2019-10-02 16:30:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-02 16:30:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1852 transitions. [2019-10-02 16:30:48,249 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1852 transitions. Word has length 125 [2019-10-02 16:30:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:48,250 INFO L475 AbstractCegarLoop]: Abstraction has 1400 states and 1852 transitions. [2019-10-02 16:30:48,250 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:30:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1852 transitions. [2019-10-02 16:30:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-02 16:30:48,255 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:48,255 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:48,256 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash -676972618, now seen corresponding path program 1 times [2019-10-02 16:30:48,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:48,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:48,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:48,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:48,258 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:48,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:48,394 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:48,395 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2019-10-02 16:30:48,397 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-10-02 16:30:48,451 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:48,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)