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/Problem19_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:09:57,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:09:57,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:09:57,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 23:09:57,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 23:09:57,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 23:09:57,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 23:09:57,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 23:09:57,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 23:09:57,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 23:09:57,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 23:09:57,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 23:09:57,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:09:57,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:09:57,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:09:57,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:09:57,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:09:57,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:09:57,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:09:57,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:09:57,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:09:57,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:09:57,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:09:57,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:09:57,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 23:09:57,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:09:57,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:09:57,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:09:57,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:09:57,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:09:57,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:09:57,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:09:57,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:09:57,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:09:57,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:09:57,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:09:57,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 23:09:57,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:09:57,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:09:57,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:09:57,558 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:09:57,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:09:57,559 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:09:57,559 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:09:57,560 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:09:57,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:09:57,560 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:09:57,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:09:57,561 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:09:57,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:09:57,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:09:57,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:09:57,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:09:57,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:09:57,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:09:57,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:09:57,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:09:57,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:09:57,563 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:09:57,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:09:57,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:09:57,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:09:57,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:09:57,564 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:09:57,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:09:57,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:09:57,564 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:09:57,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:09:57,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:09:57,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:09:57,611 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:09:57,611 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:09:57,612 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19.c [2019-09-09 23:09:57,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b4ddf89/e12885e0822547f9895f8bb811759c0f/FLAGe07d3ab40 [2019-09-09 23:09:58,598 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:09:58,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label19.c [2019-09-09 23:09:58,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b4ddf89/e12885e0822547f9895f8bb811759c0f/FLAGe07d3ab40 [2019-09-09 23:09:59,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b4ddf89/e12885e0822547f9895f8bb811759c0f [2019-09-09 23:09:59,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:09:59,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:09:59,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:09:59,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:09:59,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:09:59,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:09:59" (1/1) ... [2019-09-09 23:09:59,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f89b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:09:59, skipping insertion in model container [2019-09-09 23:09:59,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:09:59" (1/1) ... [2019-09-09 23:09:59,071 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:09:59,311 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:10:01,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:10:01,738 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:10:02,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:10:02,940 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:10:02,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02 WrapperNode [2019-09-09 23:10:02,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:10:02,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:10:02,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:10:02,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:10:02,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:02,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... [2019-09-09 23:10:03,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:10:03,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:10:03,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:10:03,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:10:03,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:10:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:10:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:10:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:10:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:10:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:10:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:10:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:10:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:10:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:10:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:10:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:10:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:10:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:10:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:10:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:10:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:10:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:10:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:10:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:10:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:10:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:10:14,250 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:10:14,250 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:10:14,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:10:14 BoogieIcfgContainer [2019-09-09 23:10:14,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:10:14,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:10:14,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:10:14,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:10:14,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:09:59" (1/3) ... [2019-09-09 23:10:14,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140420cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:10:14, skipping insertion in model container [2019-09-09 23:10:14,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:10:02" (2/3) ... [2019-09-09 23:10:14,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140420cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:10:14, skipping insertion in model container [2019-09-09 23:10:14,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:10:14" (3/3) ... [2019-09-09 23:10:14,274 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label19.c [2019-09-09 23:10:14,287 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:10:14,299 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:10:14,317 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:10:14,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:10:14,349 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:10:14,349 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:10:14,349 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:10:14,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:10:14,350 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:10:14,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:10:14,350 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:10:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:10:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-09 23:10:14,427 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:10:14,428 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:10:14,430 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:10:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:10:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1392046818, now seen corresponding path program 1 times [2019-09-09 23:10:14,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:10:14,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:14,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:10:14,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:14,481 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:10:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:10:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:10:14,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:10:14,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 23:10:14,844 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:10:14,850 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 23:10:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 23:10:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:10:14,868 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 23:10:25,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:10:25,669 INFO L93 Difference]: Finished difference Result 3275 states and 6045 transitions. [2019-09-09 23:10:25,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 23:10:25,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-09-09 23:10:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:10:25,789 INFO L225 Difference]: With dead ends: 3275 [2019-09-09 23:10:25,789 INFO L226 Difference]: Without dead ends: 3207 [2019-09-09 23:10:25,791 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:10:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2019-09-09 23:10:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3156. [2019-09-09 23:10:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3156 states. [2019-09-09 23:10:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 5827 transitions. [2019-09-09 23:10:25,972 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 5827 transitions. Word has length 30 [2019-09-09 23:10:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:10:25,972 INFO L475 AbstractCegarLoop]: Abstraction has 3156 states and 5827 transitions. [2019-09-09 23:10:25,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 23:10:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 5827 transitions. [2019-09-09 23:10:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-09 23:10:25,977 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:10:25,978 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:10:25,978 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:10:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:10:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash 553086255, now seen corresponding path program 1 times [2019-09-09 23:10:25,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:10:25,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:25,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:10:25,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:25,982 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:10:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:10:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:10:26,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:10:26,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:10:26,197 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:10:26,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:10:26,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:10:26,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:10:26,200 INFO L87 Difference]: Start difference. First operand 3156 states and 5827 transitions. Second operand 6 states. [2019-09-09 23:10:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:10:40,554 INFO L93 Difference]: Finished difference Result 6130 states and 10982 transitions. [2019-09-09 23:10:40,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:10:40,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-09-09 23:10:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:10:40,606 INFO L225 Difference]: With dead ends: 6130 [2019-09-09 23:10:40,606 INFO L226 Difference]: Without dead ends: 6130 [2019-09-09 23:10:40,607 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:10:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2019-09-09 23:10:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6069. [2019-09-09 23:10:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6069 states. [2019-09-09 23:10:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10871 transitions. [2019-09-09 23:10:40,898 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10871 transitions. Word has length 101 [2019-09-09 23:10:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:10:40,900 INFO L475 AbstractCegarLoop]: Abstraction has 6069 states and 10871 transitions. [2019-09-09 23:10:40,900 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:10:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10871 transitions. [2019-09-09 23:10:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-09 23:10:40,908 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:10:40,909 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:10:40,910 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:10:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:10:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1904272445, now seen corresponding path program 1 times [2019-09-09 23:10:40,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:10:40,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:40,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:10:40,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:40,913 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:10:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:10:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:10:41,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:10:41,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:10:41,090 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:10:41,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:10:41,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:10:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:10:41,095 INFO L87 Difference]: Start difference. First operand 6069 states and 10871 transitions. Second operand 5 states. [2019-09-09 23:10:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:10:57,003 INFO L93 Difference]: Finished difference Result 12392 states and 19452 transitions. [2019-09-09 23:10:57,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:10:57,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-09-09 23:10:57,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:10:57,062 INFO L225 Difference]: With dead ends: 12392 [2019-09-09 23:10:57,062 INFO L226 Difference]: Without dead ends: 12392 [2019-09-09 23:10:57,063 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:10:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12392 states. [2019-09-09 23:10:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12392 to 12116. [2019-09-09 23:10:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2019-09-09 23:10:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 18910 transitions. [2019-09-09 23:10:57,369 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 18910 transitions. Word has length 103 [2019-09-09 23:10:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:10:57,369 INFO L475 AbstractCegarLoop]: Abstraction has 12116 states and 18910 transitions. [2019-09-09 23:10:57,370 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:10:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 18910 transitions. [2019-09-09 23:10:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-09 23:10:57,377 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:10:57,378 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:10:57,378 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:10:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:10:57,379 INFO L82 PathProgramCache]: Analyzing trace with hash -436665375, now seen corresponding path program 1 times [2019-09-09 23:10:57,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:10:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:57,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:10:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:10:57,380 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:10:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:10:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:10:57,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:10:57,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:10:57,634 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:10:57,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:10:57,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:10:57,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:10:57,636 INFO L87 Difference]: Start difference. First operand 12116 states and 18910 transitions. Second operand 6 states. [2019-09-09 23:11:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:11:11,144 INFO L93 Difference]: Finished difference Result 18348 states and 28001 transitions. [2019-09-09 23:11:11,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:11:11,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-09 23:11:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:11:11,212 INFO L225 Difference]: With dead ends: 18348 [2019-09-09 23:11:11,212 INFO L226 Difference]: Without dead ends: 18348 [2019-09-09 23:11:11,213 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:11:11,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18348 states. [2019-09-09 23:11:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18348 to 18194. [2019-09-09 23:11:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18194 states. [2019-09-09 23:11:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18194 states to 18194 states and 27323 transitions. [2019-09-09 23:11:11,575 INFO L78 Accepts]: Start accepts. Automaton has 18194 states and 27323 transitions. Word has length 108 [2019-09-09 23:11:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:11:11,576 INFO L475 AbstractCegarLoop]: Abstraction has 18194 states and 27323 transitions. [2019-09-09 23:11:11,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:11:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18194 states and 27323 transitions. [2019-09-09 23:11:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-09 23:11:11,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:11:11,583 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:11:11,583 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:11:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:11:11,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1830037864, now seen corresponding path program 1 times [2019-09-09 23:11:11,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:11:11,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:11,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:11:11,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:11,585 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:11:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:11:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:11:11,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:11:11,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:11:11,782 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:11:11,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:11:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:11:11,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:11:11,784 INFO L87 Difference]: Start difference. First operand 18194 states and 27323 transitions. Second operand 5 states. [2019-09-09 23:11:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:11:27,643 INFO L93 Difference]: Finished difference Result 36382 states and 52901 transitions. [2019-09-09 23:11:27,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:11:27,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-09-09 23:11:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:11:27,776 INFO L225 Difference]: With dead ends: 36382 [2019-09-09 23:11:27,776 INFO L226 Difference]: Without dead ends: 36382 [2019-09-09 23:11:27,777 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:11:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36382 states. [2019-09-09 23:11:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36382 to 35220. [2019-09-09 23:11:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35220 states. [2019-09-09 23:11:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35220 states to 35220 states and 49778 transitions. [2019-09-09 23:11:28,697 INFO L78 Accepts]: Start accepts. Automaton has 35220 states and 49778 transitions. Word has length 158 [2019-09-09 23:11:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:11:28,699 INFO L475 AbstractCegarLoop]: Abstraction has 35220 states and 49778 transitions. [2019-09-09 23:11:28,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:11:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 35220 states and 49778 transitions. [2019-09-09 23:11:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-09 23:11:28,702 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:11:28,702 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:11:28,704 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:11:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:11:28,705 INFO L82 PathProgramCache]: Analyzing trace with hash 38049613, now seen corresponding path program 1 times [2019-09-09 23:11:28,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:11:28,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:28,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:11:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:28,707 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:11:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:11:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:11:28,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:11:28,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:11:28,893 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:11:28,894 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:11:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:11:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:11:28,894 INFO L87 Difference]: Start difference. First operand 35220 states and 49778 transitions. Second operand 6 states. [2019-09-09 23:11:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:11:45,209 INFO L93 Difference]: Finished difference Result 47942 states and 68014 transitions. [2019-09-09 23:11:45,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:11:45,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2019-09-09 23:11:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:11:45,360 INFO L225 Difference]: With dead ends: 47942 [2019-09-09 23:11:45,360 INFO L226 Difference]: Without dead ends: 47942 [2019-09-09 23:11:45,361 INFO L628 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 [2019-09-09 23:11:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47942 states. [2019-09-09 23:11:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47942 to 47548. [2019-09-09 23:11:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47548 states. [2019-09-09 23:11:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47548 states to 47548 states and 65648 transitions. [2019-09-09 23:11:46,185 INFO L78 Accepts]: Start accepts. Automaton has 47548 states and 65648 transitions. Word has length 168 [2019-09-09 23:11:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:11:46,188 INFO L475 AbstractCegarLoop]: Abstraction has 47548 states and 65648 transitions. [2019-09-09 23:11:46,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:11:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 47548 states and 65648 transitions. [2019-09-09 23:11:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-09-09 23:11:46,195 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:11:46,196 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:11:46,203 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:11:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:11:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1085525974, now seen corresponding path program 1 times [2019-09-09 23:11:46,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:11:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:46,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:11:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:11:46,205 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:11:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:11:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 46 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:11:46,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:11:46,369 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:11:46,370 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2019-09-09 23:11:46,372 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5374], [5376], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5841], [5842], [5845], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:11:46,450 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:11:46,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:11:54,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:11:54,922 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Performed 234 root evaluator evaluations with a maximum evaluation depth of 14. Performed 234 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:11:54,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:11:54,927 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:12:04,710 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 75.4% of their original sizes. [2019-09-09 23:12:04,710 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:12:04,796 INFO L420 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2019-09-09 23:12:04,796 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:12:04,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:12:04,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:12:04,798 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:12:04,799 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:12:04,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:12:04,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:12:04,799 INFO L87 Difference]: Start difference. First operand 47548 states and 65648 transitions. Second operand 10 states. [2019-09-09 23:16:32,115 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.