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/Problem15_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 18:58:35,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 18:58:35,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 18:58:35,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 18:58:35,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 18:58:35,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 18:58:35,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 18:58:35,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 18:58:35,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 18:58:35,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 18:58:35,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 18:58:35,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 18:58:35,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 18:58:35,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 18:58:35,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 18:58:35,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 18:58:35,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 18:58:35,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 18:58:35,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 18:58:35,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 18:58:35,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 18:58:35,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 18:58:35,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 18:58:35,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 18:58:35,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 18:58:35,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 18:58:35,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 18:58:35,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 18:58:35,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 18:58:35,930 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 18:58:35,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 18:58:35,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 18:58:35,932 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 18:58:35,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 18:58:35,933 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 18:58:35,933 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 18:58:35,933 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 18:58:35,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 18:58:35,934 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 18:58:35,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 18:58:35,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 18:58:35,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 18:58:35,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 18:58:35,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 18:58:35,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 18:58:35,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 18:58:35,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 18:58:35,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 18:58:35,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 18:58:35,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 18:58:35,937 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 18:58:35,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 18:58:35,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 18:58:35,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 18:58:35,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 18:58:35,938 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 18:58:35,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 18:58:35,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 18:58:35,939 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 18:58:35,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 18:58:35,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 18:58:35,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 18:58:35,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 18:58:35,987 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 18:58:35,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2019-09-09 18:58:36,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61848dc1f/99311279974c40149aec08517d6e0d49/FLAG765dc25f6 [2019-09-09 18:58:36,683 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 18:58:36,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2019-09-09 18:58:36,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61848dc1f/99311279974c40149aec08517d6e0d49/FLAG765dc25f6 [2019-09-09 18:58:36,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61848dc1f/99311279974c40149aec08517d6e0d49 [2019-09-09 18:58:36,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 18:58:36,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 18:58:36,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 18:58:36,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 18:58:36,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 18:58:36,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:58:36" (1/1) ... [2019-09-09 18:58:36,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6cf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:36, skipping insertion in model container [2019-09-09 18:58:36,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:58:36" (1/1) ... [2019-09-09 18:58:36,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 18:58:36,999 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 18:58:38,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:58:38,080 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 18:58:38,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:58:38,414 INFO L192 MainTranslator]: Completed translation [2019-09-09 18:58:38,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38 WrapperNode [2019-09-09 18:58:38,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 18:58:38,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 18:58:38,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 18:58:38,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 18:58:38,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... [2019-09-09 18:58:38,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 18:58:38,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 18:58:38,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 18:58:38,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 18:58:38,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 18:58:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 18:58:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 18:58:38,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 18:58:38,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 18:58:38,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 18:58:38,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 18:58:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 18:58:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 18:58:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 18:58:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 18:58:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 18:58:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 18:58:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 18:58:41,925 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 18:58:41,926 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 18:58:41,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:58:41 BoogieIcfgContainer [2019-09-09 18:58:41,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 18:58:41,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 18:58:41,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 18:58:41,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 18:58:41,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:58:36" (1/3) ... [2019-09-09 18:58:41,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df9d1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:58:41, skipping insertion in model container [2019-09-09 18:58:41,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:58:38" (2/3) ... [2019-09-09 18:58:41,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df9d1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:58:41, skipping insertion in model container [2019-09-09 18:58:41,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:58:41" (3/3) ... [2019-09-09 18:58:41,937 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label13.c [2019-09-09 18:58:41,948 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 18:58:41,957 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 18:58:41,974 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 18:58:42,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 18:58:42,003 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 18:58:42,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 18:58:42,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 18:58:42,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 18:58:42,004 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 18:58:42,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 18:58:42,004 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 18:58:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-09 18:58:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-09 18:58:42,047 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:58:42,048 INFO L399 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] [2019-09-09 18:58:42,050 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:58:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:58:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1606780512, now seen corresponding path program 1 times [2019-09-09 18:58:42,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:58:42,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:42,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:58:42,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:42,114 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:58:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:58:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:58:42,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:58:42,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 18:58:42,455 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:58:42,461 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 18:58:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 18:58:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 18:58:42,478 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 3 states. [2019-09-09 18:58:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:58:45,310 INFO L93 Difference]: Finished difference Result 758 states and 1268 transitions. [2019-09-09 18:58:45,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 18:58:45,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-09 18:58:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:58:45,337 INFO L225 Difference]: With dead ends: 758 [2019-09-09 18:58:45,337 INFO L226 Difference]: Without dead ends: 690 [2019-09-09 18:58:45,339 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 18:58:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-09-09 18:58:45,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-09-09 18:58:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-09-09 18:58:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1151 transitions. [2019-09-09 18:58:45,440 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1151 transitions. Word has length 54 [2019-09-09 18:58:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:58:45,441 INFO L475 AbstractCegarLoop]: Abstraction has 690 states and 1151 transitions. [2019-09-09 18:58:45,441 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 18:58:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1151 transitions. [2019-09-09 18:58:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 18:58:45,447 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:58:45,448 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:58:45,448 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:58:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:58:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1307152405, now seen corresponding path program 1 times [2019-09-09 18:58:45,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:58:45,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:45,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:58:45,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:45,451 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:58:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:58:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:58:45,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:58:45,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:58:45,742 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:58:45,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:58:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:58:45,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:58:45,745 INFO L87 Difference]: Start difference. First operand 690 states and 1151 transitions. Second operand 4 states. [2019-09-09 18:58:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:58:53,881 INFO L93 Difference]: Finished difference Result 1973 states and 3147 transitions. [2019-09-09 18:58:53,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:58:53,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-09-09 18:58:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:58:53,897 INFO L225 Difference]: With dead ends: 1973 [2019-09-09 18:58:53,898 INFO L226 Difference]: Without dead ends: 1973 [2019-09-09 18:58:53,899 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:58:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2019-09-09 18:58:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1968. [2019-09-09 18:58:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2019-09-09 18:58:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 3141 transitions. [2019-09-09 18:58:53,982 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 3141 transitions. Word has length 134 [2019-09-09 18:58:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:58:53,983 INFO L475 AbstractCegarLoop]: Abstraction has 1968 states and 3141 transitions. [2019-09-09 18:58:53,983 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:58:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 3141 transitions. [2019-09-09 18:58:53,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-09 18:58:53,988 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:58:53,989 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:58:53,989 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:58:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:58:53,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1860528484, now seen corresponding path program 1 times [2019-09-09 18:58:53,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:58:53,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:53,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:58:53,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:53,991 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:58:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:58:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:58:54,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:58:54,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 18:58:54,216 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:58:54,216 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 18:58:54,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 18:58:54,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-09 18:58:54,217 INFO L87 Difference]: Start difference. First operand 1968 states and 3141 transitions. Second operand 6 states. [2019-09-09 18:58:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:58:57,777 INFO L93 Difference]: Finished difference Result 2652 states and 3989 transitions. [2019-09-09 18:58:57,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-09 18:58:57,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2019-09-09 18:58:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:58:57,794 INFO L225 Difference]: With dead ends: 2652 [2019-09-09 18:58:57,794 INFO L226 Difference]: Without dead ends: 2652 [2019-09-09 18:58:57,795 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-09 18:58:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2019-09-09 18:58:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2637. [2019-09-09 18:58:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2637 states. [2019-09-09 18:58:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3953 transitions. [2019-09-09 18:58:57,867 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3953 transitions. Word has length 153 [2019-09-09 18:58:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:58:57,868 INFO L475 AbstractCegarLoop]: Abstraction has 2637 states and 3953 transitions. [2019-09-09 18:58:57,868 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 18:58:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3953 transitions. [2019-09-09 18:58:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-09-09 18:58:57,874 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:58:57,875 INFO L399 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, 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] [2019-09-09 18:58:57,875 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:58:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:58:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2082914968, now seen corresponding path program 1 times [2019-09-09 18:58:57,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:58:57,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:57,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:58:57,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:58:57,877 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:58:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:58:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 95 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-09 18:58:58,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 18:58:58,097 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 18:58:58,098 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2019-09-09 18:58:58,100 INFO L207 CegarAbsIntRunner]: [0], [1], [74], [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], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [699], [704], [706], [1635], [1639], [1648], [1652], [1654], [1661], [1662], [1663], [1665], [1666] [2019-09-09 18:58:58,172 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 18:58:58,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 18:59:00,774 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 18:59:00,776 INFO L272 AbstractInterpreter]: Visited 102 different actions 102 times. Never merged. Never widened. Performed 243 root evaluator evaluations with a maximum evaluation depth of 13. Performed 243 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 18:59:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:59:00,780 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 18:59:02,543 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 78.23% of their original sizes. [2019-09-09 18:59:02,543 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 18:59:02,638 INFO L420 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2019-09-09 18:59:02,638 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 18:59:02,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 18:59:02,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2019-09-09 18:59:02,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:59:02,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-09 18:59:02,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-09 18:59:02,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-09-09 18:59:02,641 INFO L87 Difference]: Start difference. First operand 2637 states and 3953 transitions. Second operand 11 states. [2019-09-09 18:59:12,822 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.