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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:18:38,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:18:38,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:18:38,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:18:38,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 06:18:38,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 06:18:38,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 06:18:38,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 06:18:38,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 06:18:38,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 06:18:38,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 06:18:38,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 06:18:38,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:18:38,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:18:38,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:18:38,891 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 06:18:38,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:18:38,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:18:38,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:18:38,912 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:18:38,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:18:38,916 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:18:38,917 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:18:38,917 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:18:38,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:18:38,917 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:18:38,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:18:38,918 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:18:38,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:18:38,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:18:38,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:18:38,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:18:38,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:18:38,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:18:38,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:18:38,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:18:38,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:18:38,922 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:18:38,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:18:38,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:18:38,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:18:38,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:18:38,923 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:18:38,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:18:38,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:18:38,923 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:18:38,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:18:38,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:18:38,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:18:38,991 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:18:38,991 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:18:38,992 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2019-09-09 06:18:39,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51f51a5d/184ee1521b09491fa47d6a4d90e2cfa4/FLAGadee031e8 [2019-09-09 06:18:39,646 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:18:39,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2019-09-09 06:18:39,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51f51a5d/184ee1521b09491fa47d6a4d90e2cfa4/FLAGadee031e8 [2019-09-09 06:18:39,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51f51a5d/184ee1521b09491fa47d6a4d90e2cfa4 [2019-09-09 06:18:39,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:18:39,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:18:39,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:18:39,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:18:39,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:18:39,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:18:39" (1/1) ... [2019-09-09 06:18:39,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b85e982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:39, skipping insertion in model container [2019-09-09 06:18:39,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:18:39" (1/1) ... [2019-09-09 06:18:39,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:18:39,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:18:40,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:18:40,452 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:18:40,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:18:40,696 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:18:40,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40 WrapperNode [2019-09-09 06:18:40,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:18:40,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:18:40,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:18:40,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:18:40,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (1/1) ... [2019-09-09 06:18:40,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:18:40,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:18:40,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:18:40,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:18:40,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (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 06:18:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:18:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:18:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:18:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:18:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:18:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:18:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:18:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:18:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:18:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:18:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:18:42,095 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:18:42,096 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:18:42,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:18:42 BoogieIcfgContainer [2019-09-09 06:18:42,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:18:42,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:18:42,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:18:42,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:18:42,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:18:39" (1/3) ... [2019-09-09 06:18:42,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd6878e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:18:42, skipping insertion in model container [2019-09-09 06:18:42,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:18:40" (2/3) ... [2019-09-09 06:18:42,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd6878e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:18:42, skipping insertion in model container [2019-09-09 06:18:42,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:18:42" (3/3) ... [2019-09-09 06:18:42,106 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2019-09-09 06:18:42,116 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:18:42,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:18:42,141 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:18:42,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:18:42,169 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:18:42,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:18:42,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:18:42,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:18:42,170 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:18:42,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:18:42,170 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:18:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:18:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-09 06:18:42,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:18:42,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:42,233 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:18:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:18:42,240 INFO L82 PathProgramCache]: Analyzing trace with hash 279627110, now seen corresponding path program 1 times [2019-09-09 06:18:42,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:18:42,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:42,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:18:42,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:42,303 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:18:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:18:42,844 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 06:18:42,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:18:42,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:18:42,848 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:18:42,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:18:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:18:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:18:42,873 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:18:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:18:43,864 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2019-09-09 06:18:43,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:18:43,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-09 06:18:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:18:43,890 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:18:43,890 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:18:43,894 INFO L628 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 [2019-09-09 06:18:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:18:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:18:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:18:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-09-09 06:18:43,960 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 86 [2019-09-09 06:18:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:18:43,961 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-09-09 06:18:43,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:18:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-09-09 06:18:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-09 06:18:43,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:18:43,967 INFO L399 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] [2019-09-09 06:18:43,967 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:18:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:18:43,968 INFO L82 PathProgramCache]: Analyzing trace with hash -53773379, now seen corresponding path program 1 times [2019-09-09 06:18:43,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:18:43,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:43,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:18:43,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:43,970 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:18:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:18:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:18:44,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:18:44,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:18:44,098 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:18:44,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:18:44,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:18:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:18:44,102 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-09-09 06:18:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:18:44,935 INFO L93 Difference]: Finished difference Result 431 states and 612 transitions. [2019-09-09 06:18:44,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:18:44,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-09-09 06:18:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:18:44,941 INFO L225 Difference]: With dead ends: 431 [2019-09-09 06:18:44,942 INFO L226 Difference]: Without dead ends: 431 [2019-09-09 06:18:44,942 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 06:18:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-09-09 06:18:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-09-09 06:18:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-09-09 06:18:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2019-09-09 06:18:44,999 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 96 [2019-09-09 06:18:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:18:45,000 INFO L475 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2019-09-09 06:18:45,000 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:18:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2019-09-09 06:18:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-09 06:18:45,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:18:45,007 INFO L399 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] [2019-09-09 06:18:45,007 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:18:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:18:45,008 INFO L82 PathProgramCache]: Analyzing trace with hash -24478849, now seen corresponding path program 1 times [2019-09-09 06:18:45,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:18:45,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:45,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:18:45,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:45,011 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:18:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:18:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:18:45,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:18:45,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:18:45,145 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:18:45,145 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:18:45,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:18:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:18:45,146 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand 3 states. [2019-09-09 06:18:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:18:45,692 INFO L93 Difference]: Finished difference Result 828 states and 1098 transitions. [2019-09-09 06:18:45,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:18:45,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-09-09 06:18:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:18:45,699 INFO L225 Difference]: With dead ends: 828 [2019-09-09 06:18:45,699 INFO L226 Difference]: Without dead ends: 828 [2019-09-09 06:18:45,699 INFO L628 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 [2019-09-09 06:18:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-09-09 06:18:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2019-09-09 06:18:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2019-09-09 06:18:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1098 transitions. [2019-09-09 06:18:45,733 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1098 transitions. Word has length 97 [2019-09-09 06:18:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:18:45,734 INFO L475 AbstractCegarLoop]: Abstraction has 828 states and 1098 transitions. [2019-09-09 06:18:45,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:18:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1098 transitions. [2019-09-09 06:18:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-09 06:18:45,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:18:45,738 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 06:18:45,738 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:18:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:18:45,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1420356985, now seen corresponding path program 1 times [2019-09-09 06:18:45,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:18:45,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:45,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:18:45,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:45,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:18:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:18:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:18:45,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:18:45,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:18:45,952 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:18:45,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:18:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:18:45,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:18:45,954 INFO L87 Difference]: Start difference. First operand 828 states and 1098 transitions. Second operand 6 states. [2019-09-09 06:18:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:18:46,795 INFO L93 Difference]: Finished difference Result 856 states and 1115 transitions. [2019-09-09 06:18:46,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 06:18:46,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-09 06:18:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:18:46,801 INFO L225 Difference]: With dead ends: 856 [2019-09-09 06:18:46,801 INFO L226 Difference]: Without dead ends: 856 [2019-09-09 06:18:46,802 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 06:18:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2019-09-09 06:18:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 846. [2019-09-09 06:18:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2019-09-09 06:18:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1095 transitions. [2019-09-09 06:18:46,828 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1095 transitions. Word has length 98 [2019-09-09 06:18:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:18:46,829 INFO L475 AbstractCegarLoop]: Abstraction has 846 states and 1095 transitions. [2019-09-09 06:18:46,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:18:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1095 transitions. [2019-09-09 06:18:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-09 06:18:46,832 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:18:46,833 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:18:46,833 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:18:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:18:46,833 INFO L82 PathProgramCache]: Analyzing trace with hash 53339990, now seen corresponding path program 1 times [2019-09-09 06:18:46,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:18:46,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:46,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:18:46,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:18:46,835 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:18:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:18:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 06:18:46,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:18:46,912 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:18:46,913 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 108 with the following transitions: [2019-09-09 06:18:46,915 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [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], [333], [335], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-09-09 06:18:46,989 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:18:46,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)