java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:51:29,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:51:29,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:51:29,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 17:51:29,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 17:51:29,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 17:51:29,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 17:51:29,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 17:51:29,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 17:51:29,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 17:51:29,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 17:51:29,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 17:51:29,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:51:29,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:51:29,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:51:29,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:51:29,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:51:29,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:51:29,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:51:29,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:51:29,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:51:29,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:51:29,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:51:29,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:51:29,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:51:29,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 17:51:29,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 17:51:29,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 17:51:29,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 17:51:29,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 17:51:29,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 17:51:29,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 17:51:29,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 17:51:29,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 17:51:29,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 17:51:29,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 17:51:29,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 17:51:29,108 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:51:29,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:51:29,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:51:29,110 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:51:29,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:51:29,111 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:51:29,111 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:51:29,111 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:51:29,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:51:29,112 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:51:29,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:51:29,114 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:51:29,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:51:29,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:51:29,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:51:29,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:51:29,116 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:51:29,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:51:29,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:51:29,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:51:29,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:51:29,117 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:51:29,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:51:29,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:51:29,118 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:51:29,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:51:29,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:51:29,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:51:29,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:51:29,181 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:51:29,182 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-02 17:51:29,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329ef55c2/22aba0dff22342d5b9ac61e4bba1f796/FLAGc37de68b8 [2019-10-02 17:51:29,853 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:51:29,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-02 17:51:29,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329ef55c2/22aba0dff22342d5b9ac61e4bba1f796/FLAGc37de68b8 [2019-10-02 17:51:30,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329ef55c2/22aba0dff22342d5b9ac61e4bba1f796 [2019-10-02 17:51:30,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:51:30,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:51:30,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:51:30,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:51:30,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:51:30,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:51:30" (1/1) ... [2019-10-02 17:51:30,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12037e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:30, skipping insertion in model container [2019-10-02 17:51:30,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:51:30" (1/1) ... [2019-10-02 17:51:30,073 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:51:30,147 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:51:30,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:51:30,959 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:51:31,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:51:31,227 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:51:31,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31 WrapperNode [2019-10-02 17:51:31,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:51:31,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:51:31,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:51:31,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:51:31,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... [2019-10-02 17:51:31,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:51:31,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:51:31,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:51:31,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:51:31,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:51:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:51:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:51:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:51:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:51:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:51:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:51:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:51:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:51:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:51:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:51:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:51:33,483 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:51:33,483 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:51:33,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:51:33 BoogieIcfgContainer [2019-10-02 17:51:33,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:51:33,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:51:33,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:51:33,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:51:33,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:51:30" (1/3) ... [2019-10-02 17:51:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797da4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:51:33, skipping insertion in model container [2019-10-02 17:51:33,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:51:31" (2/3) ... [2019-10-02 17:51:33,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797da4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:51:33, skipping insertion in model container [2019-10-02 17:51:33,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:51:33" (3/3) ... [2019-10-02 17:51:33,494 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-10-02 17:51:33,505 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:51:33,514 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:51:33,532 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:51:33,561 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:51:33,561 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:51:33,561 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:51:33,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:51:33,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:51:33,562 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:51:33,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:51:33,562 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:51:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-02 17:51:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-02 17:51:33,610 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:51:33,612 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:51:33,614 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:51:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:51:33,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1879577704, now seen corresponding path program 1 times [2019-10-02 17:51:33,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:51:33,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:33,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:51:33,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:33,686 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:51:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:51:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:51:34,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:51:34,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:51:34,434 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:51:34,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:51:34,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:51:34,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:51:34,459 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-10-02 17:51:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:51:35,904 INFO L93 Difference]: Finished difference Result 536 states and 821 transitions. [2019-10-02 17:51:35,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:51:35,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-10-02 17:51:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:51:35,929 INFO L225 Difference]: With dead ends: 536 [2019-10-02 17:51:35,929 INFO L226 Difference]: Without dead ends: 468 [2019-10-02 17:51:35,932 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 17:51:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-02 17:51:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2019-10-02 17:51:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-02 17:51:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2019-10-02 17:51:36,031 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 197 [2019-10-02 17:51:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:51:36,033 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2019-10-02 17:51:36,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:51:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2019-10-02 17:51:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-02 17:51:36,039 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:51:36,040 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:51:36,040 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:51:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:51:36,041 INFO L82 PathProgramCache]: Analyzing trace with hash 380333484, now seen corresponding path program 1 times [2019-10-02 17:51:36,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:51:36,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:36,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:51:36,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:36,043 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:51:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:51:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:51:36,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:51:36,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:51:36,354 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:51:36,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:51:36,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:51:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:51:36,358 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand 3 states. [2019-10-02 17:51:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:51:37,508 INFO L93 Difference]: Finished difference Result 890 states and 1284 transitions. [2019-10-02 17:51:37,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:51:37,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-02 17:51:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:51:37,519 INFO L225 Difference]: With dead ends: 890 [2019-10-02 17:51:37,520 INFO L226 Difference]: Without dead ends: 890 [2019-10-02 17:51:37,521 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 17:51:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-02 17:51:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 889. [2019-10-02 17:51:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2019-10-02 17:51:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1282 transitions. [2019-10-02 17:51:37,567 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1282 transitions. Word has length 209 [2019-10-02 17:51:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:51:37,568 INFO L475 AbstractCegarLoop]: Abstraction has 889 states and 1282 transitions. [2019-10-02 17:51:37,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:51:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1282 transitions. [2019-10-02 17:51:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-02 17:51:37,576 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:51:37,577 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:51:37,577 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:51:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:51:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1077912688, now seen corresponding path program 1 times [2019-10-02 17:51:37,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:51:37,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:37,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:51:37,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:37,580 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:51:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:51:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:51:37,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:51:37,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:51:37,830 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:51:37,831 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:51:37,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:51:37,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:51:37,832 INFO L87 Difference]: Start difference. First operand 889 states and 1282 transitions. Second operand 3 states. [2019-10-02 17:51:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:51:39,035 INFO L93 Difference]: Finished difference Result 1735 states and 2499 transitions. [2019-10-02 17:51:39,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:51:39,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2019-10-02 17:51:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:51:39,047 INFO L225 Difference]: With dead ends: 1735 [2019-10-02 17:51:39,047 INFO L226 Difference]: Without dead ends: 1735 [2019-10-02 17:51:39,048 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 17:51:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2019-10-02 17:51:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1718. [2019-10-02 17:51:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2019-10-02 17:51:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2466 transitions. [2019-10-02 17:51:39,097 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2466 transitions. Word has length 211 [2019-10-02 17:51:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:51:39,107 INFO L475 AbstractCegarLoop]: Abstraction has 1718 states and 2466 transitions. [2019-10-02 17:51:39,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:51:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2466 transitions. [2019-10-02 17:51:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-02 17:51:39,116 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:51:39,117 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:51:39,117 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:51:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:51:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2116089621, now seen corresponding path program 1 times [2019-10-02 17:51:39,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:51:39,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:39,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:51:39,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:39,122 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:51:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:51:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:51:39,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:51:39,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:51:39,292 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:51:39,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:51:39,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:51:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:51:39,293 INFO L87 Difference]: Start difference. First operand 1718 states and 2466 transitions. Second operand 6 states. [2019-10-02 17:51:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:51:41,247 INFO L93 Difference]: Finished difference Result 3531 states and 5704 transitions. [2019-10-02 17:51:41,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 17:51:41,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2019-10-02 17:51:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:51:41,278 INFO L225 Difference]: With dead ends: 3531 [2019-10-02 17:51:41,278 INFO L226 Difference]: Without dead ends: 3531 [2019-10-02 17:51:41,279 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 17:51:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2019-10-02 17:51:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3443. [2019-10-02 17:51:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2019-10-02 17:51:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5067 transitions. [2019-10-02 17:51:41,418 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5067 transitions. Word has length 214 [2019-10-02 17:51:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:51:41,419 INFO L475 AbstractCegarLoop]: Abstraction has 3443 states and 5067 transitions. [2019-10-02 17:51:41,419 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:51:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5067 transitions. [2019-10-02 17:51:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-02 17:51:41,433 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:51:41,434 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:51:41,435 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:51:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:51:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1988786189, now seen corresponding path program 1 times [2019-10-02 17:51:41,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:51:41,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:41,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:51:41,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:51:41,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:51:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:51:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:51:41,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 17:51:41,582 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 17:51:41,583 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2019-10-02 17:51:41,587 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-10-02 17:51:41,685 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 17:51:41,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)