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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:05:46,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:05:46,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:05:46,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:05:46,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:05:46,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:05:46,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:05:46,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:05:46,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:05:46,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:05:46,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:05:46,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:05:46,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:05:46,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:05:46,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:05:46,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:05:46,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:05:46,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:05:46,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:05:46,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:05:46,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:05:46,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:05:46,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:05:46,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:05:46,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:05:46,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:05:46,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:05:46,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:05:46,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:05:46,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:05:46,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:05:46,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:05:46,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:05:46,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:05:46,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:05:46,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:05:46,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 20:05:46,578 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:05:46,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:05:46,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:05:46,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:05:46,582 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:05:46,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:05:46,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:05:46,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:05:46,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:05:46,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:05:46,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:05:46,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:05:46,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:05:46,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:05:46,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:05:46,584 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:05:46,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:05:46,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:05:46,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:05:46,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:05:46,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:05:46,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:05:46,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:05:46,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:05:46,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:05:46,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:05:46,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:05:46,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:05:46,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:05:46,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:05:46,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:05:46,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:05:46,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:05:46,933 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:05:46,934 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-10-13 20:05:47,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aba78eb/8a5b33c54efd4debbf5e3e1c2bb5f6bb/FLAGb58d7164a [2019-10-13 20:05:47,806 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:05:47,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-10-13 20:05:47,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aba78eb/8a5b33c54efd4debbf5e3e1c2bb5f6bb/FLAGb58d7164a [2019-10-13 20:05:47,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aba78eb/8a5b33c54efd4debbf5e3e1c2bb5f6bb [2019-10-13 20:05:47,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:05:47,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:05:47,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:05:47,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:05:47,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:05:47,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:47" (1/1) ... [2019-10-13 20:05:47,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ea27ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47, skipping insertion in model container [2019-10-13 20:05:47,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:47" (1/1) ... [2019-10-13 20:05:47,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:05:48,070 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:05:49,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:05:49,559 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:05:50,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:05:50,286 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:05:50,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50 WrapperNode [2019-10-13 20:05:50,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:05:50,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:05:50,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:05:50,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:05:50,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (1/1) ... [2019-10-13 20:05:50,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:05:50,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:05:50,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:05:50,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:05:50,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (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 [2019-10-13 20:05:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:05:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:05:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:05:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:05:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:05:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:05:50,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:05:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:05:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:05:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:05:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:05:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:05:55,394 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:05:55,394 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:05:55,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:55 BoogieIcfgContainer [2019-10-13 20:05:55,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:05:55,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:05:55,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:05:55,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:05:55,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:47" (1/3) ... [2019-10-13 20:05:55,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f2b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:55, skipping insertion in model container [2019-10-13 20:05:55,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:50" (2/3) ... [2019-10-13 20:05:55,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f2b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:55, skipping insertion in model container [2019-10-13 20:05:55,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:55" (3/3) ... [2019-10-13 20:05:55,408 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2019-10-13 20:05:55,419 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:05:55,430 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:05:55,441 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:05:55,475 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:05:55,475 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:05:55,475 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:05:55,476 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:05:55,476 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:05:55,476 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:05:55,476 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:05:55,476 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:05:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 20:05:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 20:05:55,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:05:55,524 INFO L380 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] [2019-10-13 20:05:55,526 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:05:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:05:55,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1364317718, now seen corresponding path program 1 times [2019-10-13 20:05:55,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:05:55,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174792899] [2019-10-13 20:05:55,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:05:55,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:05:55,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:05:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:05:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:05:55,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174792899] [2019-10-13 20:05:55,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:05:55,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:05:55,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015914497] [2019-10-13 20:05:55,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:05:55,915 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:05:55,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:05:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:05:55,938 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-10-13 20:06:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:03,886 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-10-13 20:06:03,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:03,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-10-13 20:06:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:03,927 INFO L225 Difference]: With dead ends: 3230 [2019-10-13 20:06:03,927 INFO L226 Difference]: Without dead ends: 2309 [2019-10-13 20:06:03,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-10-13 20:06:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-10-13 20:06:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-10-13 20:06:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3659 transitions. [2019-10-13 20:06:04,115 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3659 transitions. Word has length 61 [2019-10-13 20:06:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:04,117 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 3659 transitions. [2019-10-13 20:06:04,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3659 transitions. [2019-10-13 20:06:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 20:06:04,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:04,135 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 20:06:04,135 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash 921108326, now seen corresponding path program 1 times [2019-10-13 20:06:04,136 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:04,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717434538] [2019-10-13 20:06:04,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:04,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:04,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:04,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717434538] [2019-10-13 20:06:04,346 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:04,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:06:04,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69057936] [2019-10-13 20:06:04,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:06:04,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:06:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:06:04,354 INFO L87 Difference]: Start difference. First operand 2309 states and 3659 transitions. Second operand 5 states. [2019-10-13 20:06:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:11,759 INFO L93 Difference]: Finished difference Result 7017 states and 11218 transitions. [2019-10-13 20:06:11,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 20:06:11,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-13 20:06:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:11,798 INFO L225 Difference]: With dead ends: 7017 [2019-10-13 20:06:11,798 INFO L226 Difference]: Without dead ends: 4714 [2019-10-13 20:06:11,805 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2019-10-13 20:06:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4671. [2019-10-13 20:06:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4671 states. [2019-10-13 20:06:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 6780 transitions. [2019-10-13 20:06:11,951 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 6780 transitions. Word has length 141 [2019-10-13 20:06:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:11,952 INFO L462 AbstractCegarLoop]: Abstraction has 4671 states and 6780 transitions. [2019-10-13 20:06:11,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:06:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 6780 transitions. [2019-10-13 20:06:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 20:06:11,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:11,959 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 20:06:11,960 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2074427823, now seen corresponding path program 1 times [2019-10-13 20:06:11,961 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:11,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675682471] [2019-10-13 20:06:11,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:11,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:11,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:12,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675682471] [2019-10-13 20:06:12,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:12,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:12,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800233325] [2019-10-13 20:06:12,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:12,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:12,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:12,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:12,273 INFO L87 Difference]: Start difference. First operand 4671 states and 6780 transitions. Second operand 6 states. [2019-10-13 20:06:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:19,349 INFO L93 Difference]: Finished difference Result 14312 states and 21357 transitions. [2019-10-13 20:06:19,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:19,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2019-10-13 20:06:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:19,394 INFO L225 Difference]: With dead ends: 14312 [2019-10-13 20:06:19,394 INFO L226 Difference]: Without dead ends: 9647 [2019-10-13 20:06:19,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 20:06:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2019-10-13 20:06:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 9523. [2019-10-13 20:06:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9523 states. [2019-10-13 20:06:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9523 states to 9523 states and 13580 transitions. [2019-10-13 20:06:19,692 INFO L78 Accepts]: Start accepts. Automaton has 9523 states and 13580 transitions. Word has length 174 [2019-10-13 20:06:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:19,694 INFO L462 AbstractCegarLoop]: Abstraction has 9523 states and 13580 transitions. [2019-10-13 20:06:19,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:06:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9523 states and 13580 transitions. [2019-10-13 20:06:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 20:06:19,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:19,697 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 20:06:19,697 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:19,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1134260862, now seen corresponding path program 1 times [2019-10-13 20:06:19,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:19,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115539975] [2019-10-13 20:06:19,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:19,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:19,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:19,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115539975] [2019-10-13 20:06:19,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:19,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:19,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509367369] [2019-10-13 20:06:19,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:19,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:19,971 INFO L87 Difference]: Start difference. First operand 9523 states and 13580 transitions. Second operand 6 states.