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/Problem17_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 21:47:21,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 21:47:21,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 21:47:21,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 21:47:21,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 21:47:21,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 21:47:21,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 21:47:21,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 21:47:21,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 21:47:21,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 21:47:21,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 21:47:21,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 21:47:21,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 21:47:21,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 21:47:21,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 21:47:21,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 21:47:21,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 21:47:21,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 21:47:21,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 21:47:21,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 21:47:21,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 21:47:21,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 21:47:21,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 21:47:21,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 21:47:21,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 21:47:21,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 21:47:21,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 21:47:21,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 21:47:21,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 21:47:21,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 21:47:21,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 21:47:21,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 21:47:21,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 21:47:21,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 21:47:21,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 21:47:21,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 21:47:21,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 21:47:21,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 21:47:21,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 21:47:21,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 21:47:21,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 21:47:21,530 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 21:47:21,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 21:47:21,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 21:47:21,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 21:47:21,546 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 21:47:21,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 21:47:21,547 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 21:47:21,547 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 21:47:21,547 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 21:47:21,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 21:47:21,548 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 21:47:21,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 21:47:21,549 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 21:47:21,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 21:47:21,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 21:47:21,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 21:47:21,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 21:47:21,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 21:47:21,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 21:47:21,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 21:47:21,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 21:47:21,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 21:47:21,551 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 21:47:21,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 21:47:21,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 21:47:21,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 21:47:21,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 21:47:21,552 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 21:47:21,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 21:47:21,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 21:47:21,552 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 21:47:21,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 21:47:21,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 21:47:21,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 21:47:21,604 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 21:47:21,605 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 21:47:21,606 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2019-09-09 21:47:21,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57083ca8a/0679829ed8ff40f0bb18e0b3cb66eaa9/FLAG28c8e0698 [2019-09-09 21:47:22,471 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 21:47:22,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2019-09-09 21:47:22,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57083ca8a/0679829ed8ff40f0bb18e0b3cb66eaa9/FLAG28c8e0698 [2019-09-09 21:47:22,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57083ca8a/0679829ed8ff40f0bb18e0b3cb66eaa9 [2019-09-09 21:47:22,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 21:47:22,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 21:47:22,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 21:47:22,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 21:47:22,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 21:47:22,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:47:22" (1/1) ... [2019-09-09 21:47:22,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d198c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:22, skipping insertion in model container [2019-09-09 21:47:22,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:47:22" (1/1) ... [2019-09-09 21:47:22,579 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 21:47:22,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 21:47:23,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 21:47:23,774 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 21:47:24,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 21:47:24,315 INFO L192 MainTranslator]: Completed translation [2019-09-09 21:47:24,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24 WrapperNode [2019-09-09 21:47:24,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 21:47:24,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 21:47:24,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 21:47:24,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 21:47:24,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (1/1) ... [2019-09-09 21:47:24,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 21:47:24,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 21:47:24,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 21:47:24,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 21:47:24,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (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 21:47:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 21:47:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 21:47:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 21:47:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 21:47:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 21:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 21:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 21:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 21:47:29,048 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 21:47:29,053 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 21:47:29,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:47:29 BoogieIcfgContainer [2019-09-09 21:47:29,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 21:47:29,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 21:47:29,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 21:47:29,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 21:47:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 09:47:22" (1/3) ... [2019-09-09 21:47:29,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf5bccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:47:29, skipping insertion in model container [2019-09-09 21:47:29,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:47:24" (2/3) ... [2019-09-09 21:47:29,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf5bccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:47:29, skipping insertion in model container [2019-09-09 21:47:29,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:47:29" (3/3) ... [2019-09-09 21:47:29,069 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2019-09-09 21:47:29,079 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 21:47:29,094 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 21:47:29,113 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 21:47:29,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 21:47:29,144 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 21:47:29,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 21:47:29,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 21:47:29,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 21:47:29,145 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 21:47:29,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 21:47:29,145 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 21:47:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-09 21:47:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-09-09 21:47:29,190 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:47:29,191 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] [2019-09-09 21:47:29,193 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:47:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:47:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1885916703, now seen corresponding path program 1 times [2019-09-09 21:47:29,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:47:29,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:29,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:47:29,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:29,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:47:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:47:29,613 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 21:47:29,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:47:29,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 21:47:29,615 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:47:29,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 21:47:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 21:47:29,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 21:47:29,640 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-09 21:47:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:47:35,741 INFO L93 Difference]: Finished difference Result 1524 states and 2209 transitions. [2019-09-09 21:47:35,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 21:47:35,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2019-09-09 21:47:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:47:35,775 INFO L225 Difference]: With dead ends: 1524 [2019-09-09 21:47:35,775 INFO L226 Difference]: Without dead ends: 1439 [2019-09-09 21:47:35,777 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 21:47:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2019-09-09 21:47:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 981. [2019-09-09 21:47:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2019-09-09 21:47:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1512 transitions. [2019-09-09 21:47:35,914 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1512 transitions. Word has length 72 [2019-09-09 21:47:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:47:35,915 INFO L475 AbstractCegarLoop]: Abstraction has 981 states and 1512 transitions. [2019-09-09 21:47:35,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 21:47:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1512 transitions. [2019-09-09 21:47:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-09 21:47:35,922 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:47:35,922 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 21:47:35,923 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:47:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:47:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1190449908, now seen corresponding path program 1 times [2019-09-09 21:47:35,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:47:35,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:35,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:47:35,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:35,925 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:47:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:47:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 21:47:36,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:47:36,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 21:47:36,139 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:47:36,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 21:47:36,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 21:47:36,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 21:47:36,145 INFO L87 Difference]: Start difference. First operand 981 states and 1512 transitions. Second operand 5 states. [2019-09-09 21:47:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:47:40,563 INFO L93 Difference]: Finished difference Result 1914 states and 2730 transitions. [2019-09-09 21:47:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 21:47:40,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-09-09 21:47:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:47:40,576 INFO L225 Difference]: With dead ends: 1914 [2019-09-09 21:47:40,576 INFO L226 Difference]: Without dead ends: 1914 [2019-09-09 21:47:40,577 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 21:47:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2019-09-09 21:47:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1890. [2019-09-09 21:47:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2019-09-09 21:47:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2682 transitions. [2019-09-09 21:47:40,652 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2682 transitions. Word has length 143 [2019-09-09 21:47:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:47:40,653 INFO L475 AbstractCegarLoop]: Abstraction has 1890 states and 2682 transitions. [2019-09-09 21:47:40,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 21:47:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2682 transitions. [2019-09-09 21:47:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-09-09 21:47:40,657 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:47:40,658 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 21:47:40,658 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:47:40,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:47:40,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1199219112, now seen corresponding path program 1 times [2019-09-09 21:47:40,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:47:40,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:40,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:47:40,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:40,660 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:47:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:47:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 21:47:40,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:47:40,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 21:47:40,869 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:47:40,869 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 21:47:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 21:47:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 21:47:40,870 INFO L87 Difference]: Start difference. First operand 1890 states and 2682 transitions. Second operand 4 states. [2019-09-09 21:47:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:47:46,074 INFO L93 Difference]: Finished difference Result 3672 states and 5056 transitions. [2019-09-09 21:47:46,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 21:47:46,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-09-09 21:47:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:47:46,099 INFO L225 Difference]: With dead ends: 3672 [2019-09-09 21:47:46,100 INFO L226 Difference]: Without dead ends: 3672 [2019-09-09 21:47:46,104 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 21:47:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2019-09-09 21:47:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3669. [2019-09-09 21:47:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3669 states. [2019-09-09 21:47:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5050 transitions. [2019-09-09 21:47:46,212 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5050 transitions. Word has length 146 [2019-09-09 21:47:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:47:46,213 INFO L475 AbstractCegarLoop]: Abstraction has 3669 states and 5050 transitions. [2019-09-09 21:47:46,214 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 21:47:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5050 transitions. [2019-09-09 21:47:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-09 21:47:46,219 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:47:46,219 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 21:47:46,220 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:47:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:47:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1238204676, now seen corresponding path program 1 times [2019-09-09 21:47:46,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:47:46,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:46,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:47:46,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:46,221 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:47:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:47:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 21:47:46,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:47:46,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 21:47:46,404 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:47:46,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 21:47:46,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 21:47:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 21:47:46,406 INFO L87 Difference]: Start difference. First operand 3669 states and 5050 transitions. Second operand 6 states. [2019-09-09 21:47:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:47:50,379 INFO L93 Difference]: Finished difference Result 5511 states and 6723 transitions. [2019-09-09 21:47:50,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 21:47:50,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2019-09-09 21:47:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:47:50,409 INFO L225 Difference]: With dead ends: 5511 [2019-09-09 21:47:50,409 INFO L226 Difference]: Without dead ends: 5511 [2019-09-09 21:47:50,410 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 21:47:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2019-09-09 21:47:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 5481. [2019-09-09 21:47:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-09-09 21:47:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 6602 transitions. [2019-09-09 21:47:50,524 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 6602 transitions. Word has length 151 [2019-09-09 21:47:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:47:50,525 INFO L475 AbstractCegarLoop]: Abstraction has 5481 states and 6602 transitions. [2019-09-09 21:47:50,525 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 21:47:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 6602 transitions. [2019-09-09 21:47:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-09-09 21:47:50,530 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:47:50,530 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 21:47:50,531 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:47:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:47:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1683742340, now seen corresponding path program 1 times [2019-09-09 21:47:50,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:47:50,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:50,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:47:50,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:47:50,533 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:47:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:47:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 138 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-09 21:47:50,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 21:47:50,828 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 21:47:50,829 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2019-09-09 21:47:50,832 INFO L207 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1182], [1190], [1194], [1196], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2292], [2296], [2298], [2305], [2306], [2307], [2309], [2310] [2019-09-09 21:47:50,920 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 21:47:50,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 21:47:56,465 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 21:48:07,926 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 21:48:07,928 INFO L272 AbstractInterpreter]: Visited 95 different actions 276 times. Merged at 6 different actions 11 times. Never widened. Performed 719 root evaluator evaluations with a maximum evaluation depth of 17. Performed 719 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 21:48:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:48:07,931 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 21:48:16,179 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 75.87% of their original sizes. [2019-09-09 21:48:16,179 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 21:48:16,271 INFO L420 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2019-09-09 21:48:16,271 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 21:48:16,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 21:48:16,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2019-09-09 21:48:16,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:48:16,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 21:48:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 21:48:16,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 21:48:16,274 INFO L87 Difference]: Start difference. First operand 5481 states and 6602 transitions. Second operand 10 states.