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/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 20:04:58,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 20:04:58,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 20:04:58,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 20:04:58,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 20:04:58,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 20:04:58,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 20:04:58,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 20:04:58,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 20:04:58,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 20:04:58,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 20:04:58,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 20:04:58,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 20:04:58,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 20:04:58,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 20:04:58,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 20:04:58,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 20:04:58,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 20:04:58,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 20:04:58,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 20:04:58,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 20:04:58,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 20:04:58,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 20:04:58,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 20:04:58,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 20:04:58,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 20:04:58,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 20:04:58,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 20:04:58,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 20:04:58,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 20:04:58,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 20:04:58,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 20:04:58,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 20:04:58,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 20:04:58,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 20:04:58,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 20:04:58,450 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 20:04:58,466 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 20:04:58,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 20:04:58,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 20:04:58,467 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 20:04:58,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 20:04:58,468 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 20:04:58,468 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 20:04:58,468 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 20:04:58,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 20:04:58,469 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 20:04:58,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 20:04:58,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 20:04:58,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 20:04:58,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 20:04:58,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 20:04:58,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 20:04:58,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 20:04:58,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 20:04:58,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 20:04:58,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 20:04:58,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 20:04:58,471 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 20:04:58,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 20:04:58,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 20:04:58,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 20:04:58,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 20:04:58,473 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 20:04:58,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 20:04:58,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 20:04:58,473 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 20:04:58,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 20:04:58,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 20:04:58,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 20:04:58,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 20:04:58,521 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 20:04:58,522 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-02 20:04:58,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51331d3b7/13d49351f2e74dd39c5f169637701de8/FLAG8a10a5db8 [2019-10-02 20:04:59,367 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 20:04:59,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-02 20:04:59,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51331d3b7/13d49351f2e74dd39c5f169637701de8/FLAG8a10a5db8 [2019-10-02 20:04:59,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51331d3b7/13d49351f2e74dd39c5f169637701de8 [2019-10-02 20:04:59,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 20:04:59,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 20:04:59,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 20:04:59,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 20:04:59,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 20:04:59,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:04:59" (1/1) ... [2019-10-02 20:04:59,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29222bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:04:59, skipping insertion in model container [2019-10-02 20:04:59,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:04:59" (1/1) ... [2019-10-02 20:04:59,948 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 20:05:00,118 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 20:05:01,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:05:01,596 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 20:05:02,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:05:02,281 INFO L192 MainTranslator]: Completed translation [2019-10-02 20:05:02,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02 WrapperNode [2019-10-02 20:05:02,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 20:05:02,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 20:05:02,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 20:05:02,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 20:05:02,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (1/1) ... [2019-10-02 20:05:02,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 20:05:02,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 20:05:02,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 20:05:02,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 20:05:02,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (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 [2019-10-02 20:05:02,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 20:05:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 20:05:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 20:05:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 20:05:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 20:05:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-02 20:05:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 20:05:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 20:05:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 20:05:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 20:05:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-02 20:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 20:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 20:05:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 20:05:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 20:05:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 20:05:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 20:05:07,566 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 20:05:07,567 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 20:05:07,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:05:07 BoogieIcfgContainer [2019-10-02 20:05:07,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 20:05:07,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 20:05:07,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 20:05:07,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 20:05:07,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 08:04:59" (1/3) ... [2019-10-02 20:05:07,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e03b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:05:07, skipping insertion in model container [2019-10-02 20:05:07,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:05:02" (2/3) ... [2019-10-02 20:05:07,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e03b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:05:07, skipping insertion in model container [2019-10-02 20:05:07,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:05:07" (3/3) ... [2019-10-02 20:05:07,580 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-02 20:05:07,594 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 20:05:07,605 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 20:05:07,623 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 20:05:07,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 20:05:07,658 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 20:05:07,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 20:05:07,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 20:05:07,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 20:05:07,659 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 20:05:07,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 20:05:07,659 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 20:05:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-02 20:05:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-02 20:05:07,721 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:07,722 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] [2019-10-02 20:05:07,724 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1204475243, now seen corresponding path program 1 times [2019-10-02 20:05:07,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:07,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:07,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:07,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:07,785 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:08,101 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 20:05:08,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:08,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 20:05:08,104 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:08,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 20:05:08,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 20:05:08,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 20:05:08,127 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-02 20:05:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:13,746 INFO L93 Difference]: Finished difference Result 1610 states and 2855 transitions. [2019-10-02 20:05:13,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 20:05:13,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-10-02 20:05:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:13,800 INFO L225 Difference]: With dead ends: 1610 [2019-10-02 20:05:13,800 INFO L226 Difference]: Without dead ends: 1542 [2019-10-02 20:05:13,804 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 20:05:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-02 20:05:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-02 20:05:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-02 20:05:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-10-02 20:05:13,979 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 70 [2019-10-02 20:05:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:13,981 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-10-02 20:05:13,981 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 20:05:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-10-02 20:05:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-02 20:05:13,995 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:13,996 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, 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] [2019-10-02 20:05:13,996 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:13,998 INFO L82 PathProgramCache]: Analyzing trace with hash 362891361, now seen corresponding path program 1 times [2019-10-02 20:05:13,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:14,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:14,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:14,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:14,002 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:05:14,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:14,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 20:05:14,247 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:14,252 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 20:05:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 20:05:14,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 20:05:14,253 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-10-02 20:05:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:21,430 INFO L93 Difference]: Finished difference Result 3154 states and 5401 transitions. [2019-10-02 20:05:21,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:05:21,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-02 20:05:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:21,456 INFO L225 Difference]: With dead ends: 3154 [2019-10-02 20:05:21,456 INFO L226 Difference]: Without dead ends: 3154 [2019-10-02 20:05:21,458 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 20:05:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-10-02 20:05:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-10-02 20:05:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-10-02 20:05:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-10-02 20:05:21,551 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 143 [2019-10-02 20:05:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:21,553 INFO L475 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-10-02 20:05:21,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 20:05:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-10-02 20:05:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-02 20:05:21,555 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:21,555 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, 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] [2019-10-02 20:05:21,556 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2056007356, now seen corresponding path program 1 times [2019-10-02 20:05:21,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:21,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:21,559 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:05:21,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:21,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 20:05:21,750 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:21,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 20:05:21,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 20:05:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:05:21,754 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 6 states. [2019-10-02 20:05:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:29,503 INFO L93 Difference]: Finished difference Result 6375 states and 10895 transitions. [2019-10-02 20:05:29,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:05:29,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-10-02 20:05:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:29,544 INFO L225 Difference]: With dead ends: 6375 [2019-10-02 20:05:29,544 INFO L226 Difference]: Without dead ends: 6375 [2019-10-02 20:05:29,545 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 20:05:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2019-10-02 20:05:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6333. [2019-10-02 20:05:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2019-10-02 20:05:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 10769 transitions. [2019-10-02 20:05:29,713 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 10769 transitions. Word has length 148 [2019-10-02 20:05:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:29,714 INFO L475 AbstractCegarLoop]: Abstraction has 6333 states and 10769 transitions. [2019-10-02 20:05:29,714 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 20:05:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 10769 transitions. [2019-10-02 20:05:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-02 20:05:29,717 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:29,717 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, 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] [2019-10-02 20:05:29,717 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:29,718 INFO L82 PathProgramCache]: Analyzing trace with hash -857112276, now seen corresponding path program 1 times [2019-10-02 20:05:29,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:29,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:29,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:29,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:29,720 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:05:29,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:29,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 20:05:29,887 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:29,888 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 20:05:29,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 20:05:29,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:05:29,889 INFO L87 Difference]: Start difference. First operand 6333 states and 10769 transitions. Second operand 6 states. [2019-10-02 20:05:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:36,244 INFO L93 Difference]: Finished difference Result 9653 states and 15962 transitions. [2019-10-02 20:05:36,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:05:36,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2019-10-02 20:05:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:36,292 INFO L225 Difference]: With dead ends: 9653 [2019-10-02 20:05:36,293 INFO L226 Difference]: Without dead ends: 9653 [2019-10-02 20:05:36,294 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 20:05:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states. [2019-10-02 20:05:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9653 to 9576. [2019-10-02 20:05:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9576 states. [2019-10-02 20:05:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 15603 transitions. [2019-10-02 20:05:36,579 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 15603 transitions. Word has length 156 [2019-10-02 20:05:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:36,581 INFO L475 AbstractCegarLoop]: Abstraction has 9576 states and 15603 transitions. [2019-10-02 20:05:36,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 20:05:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 15603 transitions. [2019-10-02 20:05:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-02 20:05:36,588 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:36,588 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, 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] [2019-10-02 20:05:36,589 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash 597997349, now seen corresponding path program 1 times [2019-10-02 20:05:36,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:36,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:36,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:36,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:36,595 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:05:36,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:36,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 20:05:36,838 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:36,839 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 20:05:36,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 20:05:36,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:05:36,840 INFO L87 Difference]: Start difference. First operand 9576 states and 15603 transitions. Second operand 6 states. [2019-10-02 20:05:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:43,620 INFO L93 Difference]: Finished difference Result 14630 states and 22312 transitions. [2019-10-02 20:05:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:05:43,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2019-10-02 20:05:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:43,683 INFO L225 Difference]: With dead ends: 14630 [2019-10-02 20:05:43,683 INFO L226 Difference]: Without dead ends: 14630 [2019-10-02 20:05:43,684 INFO L640 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 [2019-10-02 20:05:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14630 states. [2019-10-02 20:05:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14630 to 14577. [2019-10-02 20:05:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14577 states. [2019-10-02 20:05:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 21947 transitions. [2019-10-02 20:05:44,030 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 21947 transitions. Word has length 189 [2019-10-02 20:05:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:44,031 INFO L475 AbstractCegarLoop]: Abstraction has 14577 states and 21947 transitions. [2019-10-02 20:05:44,031 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 20:05:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 21947 transitions. [2019-10-02 20:05:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2019-10-02 20:05:44,041 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:44,041 INFO L411 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:44,042 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:44,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2125642115, now seen corresponding path program 1 times [2019-10-02 20:05:44,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:44,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:44,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:44,046 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-02 20:05:44,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:05:44,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 20:05:44,313 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:05:44,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 20:05:44,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 20:05:44,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 20:05:44,317 INFO L87 Difference]: Start difference. First operand 14577 states and 21947 transitions. Second operand 5 states. [2019-10-02 20:05:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:05:52,419 INFO L93 Difference]: Finished difference Result 28331 states and 40811 transitions. [2019-10-02 20:05:52,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 20:05:52,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2019-10-02 20:05:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:05:52,578 INFO L225 Difference]: With dead ends: 28331 [2019-10-02 20:05:52,578 INFO L226 Difference]: Without dead ends: 28331 [2019-10-02 20:05:52,579 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:05:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28331 states. [2019-10-02 20:05:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28331 to 28199. [2019-10-02 20:05:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28199 states. [2019-10-02 20:05:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28199 states to 28199 states and 40132 transitions. [2019-10-02 20:05:54,061 INFO L78 Accepts]: Start accepts. Automaton has 28199 states and 40132 transitions. Word has length 264 [2019-10-02 20:05:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:05:54,063 INFO L475 AbstractCegarLoop]: Abstraction has 28199 states and 40132 transitions. [2019-10-02 20:05:54,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 20:05:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28199 states and 40132 transitions. [2019-10-02 20:05:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-10-02 20:05:54,074 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:05:54,074 INFO L411 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:54,077 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:05:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:05:54,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2134705093, now seen corresponding path program 1 times [2019-10-02 20:05:54,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:05:54,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:54,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:05:54,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:05:54,089 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:05:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:05:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 20:05:54,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 20:05:54,243 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 20:05:54,245 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2019-10-02 20:05:54,248 INFO L207 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2335], [2337], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [3240], [3244], [3253], [3257], [3259], [3270], [3271], [3272], [3274], [3275] [2019-10-02 20:05:54,316 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 20:05:54,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 20:06:21,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 20:06:21,730 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 292 root evaluator evaluations with a maximum evaluation depth of 16. Performed 292 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Never found a fixpoint. Largest state had 26 variables. [2019-10-02 20:06:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:06:21,735 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 20:06:46,653 INFO L227 lantSequenceWeakener]: Weakened 249 states. On average, predicates are now at 75.97% of their original sizes. [2019-10-02 20:06:46,654 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 20:06:46,759 INFO L420 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2019-10-02 20:06:46,760 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 20:06:46,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 20:06:46,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2019-10-02 20:06:46,761 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:06:46,762 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 20:06:46,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 20:06:46,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-02 20:06:46,762 INFO L87 Difference]: Start difference. First operand 28199 states and 40132 transitions. Second operand 11 states. [2019-10-02 20:09:49,299 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.