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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:39,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:39,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:39,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:39,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:39,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:39,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:39,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:39,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:39,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:39,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:39,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:39,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:39,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:39,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:39,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:39,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:39,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:39,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:39,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:39,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:39,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:39,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:39,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:39,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:39,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:39,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:39,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:39,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:39,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:39,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:39,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:39,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:39,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:39,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:39,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:39,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:30:39,465 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:39,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:39,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:39,466 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:39,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:39,467 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:39,467 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:39,468 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:39,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:39,468 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:39,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:39,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:39,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:39,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:39,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:39,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:39,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:39,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:39,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:39,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:39,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:39,471 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:39,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:39,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:39,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:39,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:39,472 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:39,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:39,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:39,472 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:39,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:39,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:39,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:39,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:39,515 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:39,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label03.c [2019-10-02 16:30:39,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f72e53f/823fd9f2585340389260b3644698167a/FLAG600210b2a [2019-10-02 16:30:40,113 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:40,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label03.c [2019-10-02 16:30:40,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f72e53f/823fd9f2585340389260b3644698167a/FLAG600210b2a [2019-10-02 16:30:40,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f72e53f/823fd9f2585340389260b3644698167a [2019-10-02 16:30:40,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:40,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:40,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:40,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:40,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:40,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:40" (1/1) ... [2019-10-02 16:30:40,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb44e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:40, skipping insertion in model container [2019-10-02 16:30:40,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:40" (1/1) ... [2019-10-02 16:30:40,448 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:40,496 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:41,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:41,020 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:41,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:41,171 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:41,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41 WrapperNode [2019-10-02 16:30:41,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:41,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:41,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:41,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:41,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... [2019-10-02 16:30:41,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:41,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:41,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:41,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:41,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 16:30:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:41,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 16:30:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:30:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:42,550 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:42,551 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 16:30:42,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:42 BoogieIcfgContainer [2019-10-02 16:30:42,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:42,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:42,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:42,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:42,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:40" (1/3) ... [2019-10-02 16:30:42,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1710c58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:42, skipping insertion in model container [2019-10-02 16:30:42,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:41" (2/3) ... [2019-10-02 16:30:42,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1710c58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:42, skipping insertion in model container [2019-10-02 16:30:42,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:42" (3/3) ... [2019-10-02 16:30:42,560 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label03.c [2019-10-02 16:30:42,570 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:42,577 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:42,594 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:42,622 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:42,622 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:42,622 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:42,622 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:42,623 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:42,623 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:42,623 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:42,623 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 16:30:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-02 16:30:42,665 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:42,666 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] [2019-10-02 16:30:42,669 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2067101231, now seen corresponding path program 1 times [2019-10-02 16:30:42,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:42,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:42,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:42,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:42,736 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:43,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:43,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:43,254 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:43,265 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:43,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:43,281 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2019-10-02 16:30:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:44,496 INFO L93 Difference]: Finished difference Result 497 states and 751 transitions. [2019-10-02 16:30:44,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:44,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-02 16:30:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:44,517 INFO L225 Difference]: With dead ends: 497 [2019-10-02 16:30:44,517 INFO L226 Difference]: Without dead ends: 413 [2019-10-02 16:30:44,519 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:44,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-02 16:30:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 278. [2019-10-02 16:30:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 16:30:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-10-02 16:30:44,590 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 135 [2019-10-02 16:30:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:44,591 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-10-02 16:30:44,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-10-02 16:30:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-02 16:30:44,596 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:44,597 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:44,597 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1881738056, now seen corresponding path program 1 times [2019-10-02 16:30:44,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:44,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:44,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:44,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:44,600 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:44,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:44,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:30:44,792 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:44,793 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:30:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:30:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:44,794 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-10-02 16:30:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:45,600 INFO L93 Difference]: Finished difference Result 568 states and 829 transitions. [2019-10-02 16:30:45,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:30:45,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-02 16:30:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:45,608 INFO L225 Difference]: With dead ends: 568 [2019-10-02 16:30:45,608 INFO L226 Difference]: Without dead ends: 568 [2019-10-02 16:30:45,609 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 16:30:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-02 16:30:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-10-02 16:30:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-02 16:30:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 799 transitions. [2019-10-02 16:30:45,658 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 799 transitions. Word has length 145 [2019-10-02 16:30:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:45,658 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 799 transitions. [2019-10-02 16:30:45,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:30:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 799 transitions. [2019-10-02 16:30:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-02 16:30:45,665 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:45,666 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:45,666 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash 417446198, now seen corresponding path program 1 times [2019-10-02 16:30:45,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:45,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:45,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:45,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:45,672 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:46,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:46,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:46,009 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:46,010 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:46,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:46,011 INFO L87 Difference]: Start difference. First operand 556 states and 799 transitions. Second operand 5 states. [2019-10-02 16:30:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:46,744 INFO L93 Difference]: Finished difference Result 655 states and 900 transitions. [2019-10-02 16:30:46,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:46,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-02 16:30:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:46,766 INFO L225 Difference]: With dead ends: 655 [2019-10-02 16:30:46,766 INFO L226 Difference]: Without dead ends: 554 [2019-10-02 16:30:46,766 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-10-02 16:30:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-10-02 16:30:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-02 16:30:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 726 transitions. [2019-10-02 16:30:46,802 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 726 transitions. Word has length 146 [2019-10-02 16:30:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:46,802 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 726 transitions. [2019-10-02 16:30:46,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 726 transitions. [2019-10-02 16:30:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-02 16:30:46,805 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:46,805 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 16:30:46,806 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1915410754, now seen corresponding path program 1 times [2019-10-02 16:30:46,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:46,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:46,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:46,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:46,808 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:46,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:46,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:46,942 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:46,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:46,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:46,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:46,944 INFO L87 Difference]: Start difference. First operand 554 states and 726 transitions. Second operand 3 states. [2019-10-02 16:30:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:47,429 INFO L93 Difference]: Finished difference Result 824 states and 1026 transitions. [2019-10-02 16:30:47,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:47,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-02 16:30:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:47,435 INFO L225 Difference]: With dead ends: 824 [2019-10-02 16:30:47,436 INFO L226 Difference]: Without dead ends: 824 [2019-10-02 16:30:47,436 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-10-02 16:30:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2019-10-02 16:30:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2019-10-02 16:30:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1024 transitions. [2019-10-02 16:30:47,461 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1024 transitions. Word has length 150 [2019-10-02 16:30:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:47,462 INFO L475 AbstractCegarLoop]: Abstraction has 822 states and 1024 transitions. [2019-10-02 16:30:47,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1024 transitions. [2019-10-02 16:30:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-02 16:30:47,465 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:47,466 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:47,466 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:47,467 INFO L82 PathProgramCache]: Analyzing trace with hash 368925160, now seen corresponding path program 1 times [2019-10-02 16:30:47,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:47,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:47,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:47,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:47,468 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:47,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:47,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:47,616 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:47,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:47,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:47,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:47,618 INFO L87 Difference]: Start difference. First operand 822 states and 1024 transitions. Second operand 3 states. [2019-10-02 16:30:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:48,111 INFO L93 Difference]: Finished difference Result 1092 states and 1346 transitions. [2019-10-02 16:30:48,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:48,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-02 16:30:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:48,114 INFO L225 Difference]: With dead ends: 1092 [2019-10-02 16:30:48,114 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:48,114 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:48,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 169 [2019-10-02 16:30:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:48,116 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:48,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:48,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:48 BoogieIcfgContainer [2019-10-02 16:30:48,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:48,125 INFO L168 Benchmark]: Toolchain (without parser) took 7692.75 ms. Allocated memory was 133.7 MB in the beginning and 368.1 MB in the end (delta: 234.4 MB). Free memory was 87.1 MB in the beginning and 256.2 MB in the end (delta: -169.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,126 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 133.7 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.61 ms. Allocated memory was 133.7 MB in the beginning and 203.4 MB in the end (delta: 69.7 MB). Free memory was 86.9 MB in the beginning and 165.4 MB in the end (delta: -78.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,130 INFO L168 Benchmark]: Boogie Preprocessor took 121.23 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 159.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,132 INFO L168 Benchmark]: RCFGBuilder took 1258.19 ms. Allocated memory was 203.4 MB in the beginning and 228.1 MB in the end (delta: 24.6 MB). Free memory was 159.9 MB in the beginning and 174.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,134 INFO L168 Benchmark]: TraceAbstraction took 5568.19 ms. Allocated memory was 228.1 MB in the beginning and 368.1 MB in the end (delta: 140.0 MB). Free memory was 174.7 MB in the beginning and 256.2 MB in the end (delta: -81.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:48,145 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 133.7 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 740.61 ms. Allocated memory was 133.7 MB in the beginning and 203.4 MB in the end (delta: 69.7 MB). Free memory was 86.9 MB in the beginning and 165.4 MB in the end (delta: -78.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.23 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 159.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1258.19 ms. Allocated memory was 203.4 MB in the beginning and 228.1 MB in the end (delta: 24.6 MB). Free memory was 159.9 MB in the beginning and 174.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5568.19 ms. Allocated memory was 228.1 MB in the beginning and 368.1 MB in the end (delta: 140.0 MB). Free memory was 174.7 MB in the beginning and 256.2 MB in the end (delta: -81.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 563]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 318 SDtfs, 1017 SDslu, 93 SDs, 0 SdLazy, 2262 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=822occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 740 ConstructedInterpolants, 0 QuantifiedInterpolants, 680744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 58/58 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...