java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:33:44,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:33:44,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:33:44,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 07:33:44,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 07:33:44,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 07:33:44,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 07:33:44,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 07:33:44,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 07:33:44,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 07:33:44,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 07:33:44,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 07:33:44,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 07:33:44,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 07:33:44,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 07:33:44,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 07:33:44,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 07:33:44,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 07:33:44,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 07:33:44,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 07:33:44,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 07:33:44,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 07:33:44,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 07:33:44,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 07:33:44,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 07:33:44,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 07:33:44,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 07:33:44,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 07:33:44,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 07:33:44,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 07:33:44,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 07:33:44,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 07:33:44,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 07:33:44,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 07:33:44,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 07:33:44,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 07:33:44,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 07:33:44,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 07:33:44,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 07:33:44,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 07:33:44,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 07:33:44,663 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 07:33:44,679 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:33:44,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:33:44,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:33:44,680 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:33:44,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:33:44,680 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:33:44,681 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:33:44,681 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:33:44,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:33:44,681 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:33:44,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:33:44,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:33:44,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:33:44,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:33:44,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:33:44,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:33:44,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:33:44,683 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:33:44,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:33:44,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:33:44,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:33:44,684 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:33:44,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:33:44,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:33:44,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:33:44,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:33:44,685 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:33:44,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:33:44,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:33:44,686 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:33:44,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:33:44,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:33:44,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:33:44,731 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:33:44,731 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:33:44,732 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2019-09-09 07:33:44,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9480060/a455721e6f2c4d0a922568a860ea2b10/FLAG602391a5d [2019-09-09 07:33:45,389 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:33:45,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2019-09-09 07:33:45,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9480060/a455721e6f2c4d0a922568a860ea2b10/FLAG602391a5d [2019-09-09 07:33:45,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9480060/a455721e6f2c4d0a922568a860ea2b10 [2019-09-09 07:33:45,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:33:45,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:33:45,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:33:45,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:33:45,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:33:45,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:33:45" (1/1) ... [2019-09-09 07:33:45,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fda517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:45, skipping insertion in model container [2019-09-09 07:33:45,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:33:45" (1/1) ... [2019-09-09 07:33:45,656 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:33:45,741 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:33:46,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:33:46,744 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:33:47,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:33:47,213 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:33:47,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47 WrapperNode [2019-09-09 07:33:47,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:33:47,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:33:47,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:33:47,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:33:47,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (1/1) ... [2019-09-09 07:33:47,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:33:47,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:33:47,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:33:47,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:33:47,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (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 07:33:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:33:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:33:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:33:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:33:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:33:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:33:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:33:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:33:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:33:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:33:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:33:49,514 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:33:49,514 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:33:49,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:33:49 BoogieIcfgContainer [2019-09-09 07:33:49,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:33:49,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:33:49,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:33:49,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:33:49,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:33:45" (1/3) ... [2019-09-09 07:33:49,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d33c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:33:49, skipping insertion in model container [2019-09-09 07:33:49,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:33:47" (2/3) ... [2019-09-09 07:33:49,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d33c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:33:49, skipping insertion in model container [2019-09-09 07:33:49,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:33:49" (3/3) ... [2019-09-09 07:33:49,525 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2019-09-09 07:33:49,535 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:33:49,548 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:33:49,566 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:33:49,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:33:49,604 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:33:49,605 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:33:49,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:33:49,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:33:49,605 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:33:49,605 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:33:49,605 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:33:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 07:33:49,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-09-09 07:33:49,672 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:33:49,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:49,676 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:33:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:33:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash 2031049480, now seen corresponding path program 1 times [2019-09-09 07:33:49,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:33:49,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:49,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:33:49,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:49,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:33:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:33:50,608 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 07:33:50,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:33:50,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 07:33:50,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:33:50,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 07:33:50,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 07:33:50,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:33:50,637 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-09 07:33:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:33:52,770 INFO L93 Difference]: Finished difference Result 775 states and 1292 transitions. [2019-09-09 07:33:52,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 07:33:52,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-09-09 07:33:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:33:52,799 INFO L225 Difference]: With dead ends: 775 [2019-09-09 07:33:52,799 INFO L226 Difference]: Without dead ends: 688 [2019-09-09 07:33:52,801 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:33:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-09-09 07:33:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 462. [2019-09-09 07:33:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2019-09-09 07:33:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 751 transitions. [2019-09-09 07:33:52,904 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 751 transitions. Word has length 177 [2019-09-09 07:33:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:33:52,908 INFO L475 AbstractCegarLoop]: Abstraction has 462 states and 751 transitions. [2019-09-09 07:33:52,908 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 07:33:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 751 transitions. [2019-09-09 07:33:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-09-09 07:33:52,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:33:52,921 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:33:52,924 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:33:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:33:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1152351313, now seen corresponding path program 1 times [2019-09-09 07:33:52,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:33:52,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:52,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:33:52,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:52,927 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:33:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:33:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:33:53,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:33:53,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 07:33:53,125 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:33:53,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 07:33:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 07:33:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 07:33:53,129 INFO L87 Difference]: Start difference. First operand 462 states and 751 transitions. Second operand 5 states. [2019-09-09 07:33:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:33:54,696 INFO L93 Difference]: Finished difference Result 909 states and 1421 transitions. [2019-09-09 07:33:54,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 07:33:54,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2019-09-09 07:33:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:33:54,705 INFO L225 Difference]: With dead ends: 909 [2019-09-09 07:33:54,705 INFO L226 Difference]: Without dead ends: 909 [2019-09-09 07:33:54,706 INFO L628 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 [2019-09-09 07:33:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-09-09 07:33:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 892. [2019-09-09 07:33:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2019-09-09 07:33:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1383 transitions. [2019-09-09 07:33:54,747 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1383 transitions. Word has length 187 [2019-09-09 07:33:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:33:54,748 INFO L475 AbstractCegarLoop]: Abstraction has 892 states and 1383 transitions. [2019-09-09 07:33:54,748 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 07:33:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1383 transitions. [2019-09-09 07:33:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-09 07:33:54,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:33:54,752 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:33:54,752 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:33:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:33:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1614917404, now seen corresponding path program 1 times [2019-09-09 07:33:54,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:33:54,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:54,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:33:54,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:54,754 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:33:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:33:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:33:54,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:33:54,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:33:54,944 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:33:54,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:33:54,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:33:54,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:33:54,946 INFO L87 Difference]: Start difference. First operand 892 states and 1383 transitions. Second operand 3 states. [2019-09-09 07:33:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:33:55,991 INFO L93 Difference]: Finished difference Result 1738 states and 2601 transitions. [2019-09-09 07:33:55,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:33:55,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-09-09 07:33:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:33:56,004 INFO L225 Difference]: With dead ends: 1738 [2019-09-09 07:33:56,004 INFO L226 Difference]: Without dead ends: 1738 [2019-09-09 07:33:56,005 INFO L628 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 [2019-09-09 07:33:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2019-09-09 07:33:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1317. [2019-09-09 07:33:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2019-09-09 07:33:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1988 transitions. [2019-09-09 07:33:56,049 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1988 transitions. Word has length 189 [2019-09-09 07:33:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:33:56,050 INFO L475 AbstractCegarLoop]: Abstraction has 1317 states and 1988 transitions. [2019-09-09 07:33:56,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:33:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1988 transitions. [2019-09-09 07:33:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-09 07:33:56,055 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:33:56,056 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:33:56,056 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:33:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:33:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash -909805824, now seen corresponding path program 1 times [2019-09-09 07:33:56,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:33:56,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:56,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:33:56,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:56,058 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:33:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:33:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:33:56,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:33:56,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:33:56,284 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:33:56,285 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:33:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:33:56,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:33:56,286 INFO L87 Difference]: Start difference. First operand 1317 states and 1988 transitions. Second operand 6 states. [2019-09-09 07:33:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:33:57,985 INFO L93 Difference]: Finished difference Result 2690 states and 3775 transitions. [2019-09-09 07:33:57,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 07:33:57,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2019-09-09 07:33:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:33:58,006 INFO L225 Difference]: With dead ends: 2690 [2019-09-09 07:33:58,006 INFO L226 Difference]: Without dead ends: 2690 [2019-09-09 07:33:58,007 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 07:33:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2019-09-09 07:33:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2635. [2019-09-09 07:33:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2019-09-09 07:33:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3610 transitions. [2019-09-09 07:33:58,164 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3610 transitions. Word has length 191 [2019-09-09 07:33:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:33:58,165 INFO L475 AbstractCegarLoop]: Abstraction has 2635 states and 3610 transitions. [2019-09-09 07:33:58,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:33:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3610 transitions. [2019-09-09 07:33:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-09-09 07:33:58,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:33:58,173 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:33:58,173 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:33:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:33:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1008942344, now seen corresponding path program 1 times [2019-09-09 07:33:58,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:33:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:58,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:33:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:33:58,175 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:33:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:33:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:33:58,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:33:58,472 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:33:58,473 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2019-09-09 07:33:58,477 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 07:33:58,566 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:33:58,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)