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/Problem18_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:56:14,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:56:14,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:56:14,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 21:56:14,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 21:56:14,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 21:56:14,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 21:56:14,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 21:56:14,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 21:56:14,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 21:56:14,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 21:56:14,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 21:56:14,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:56:14,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:56:14,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:56:14,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:56:14,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:56:14,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:56:14,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:56:14,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:56:14,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:56:14,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:56:14,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:56:14,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:56:14,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:56:14,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 21:56:14,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 21:56:14,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 21:56:14,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 21:56:14,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 21:56:14,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 21:56:14,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 21:56:14,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 21:56:14,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 21:56:14,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 21:56:14,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 21:56:14,287 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 21:56:14,302 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:56:14,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:56:14,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:56:14,302 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:56:14,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:56:14,303 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:56:14,303 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:56:14,304 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:56:14,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:56:14,304 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:56:14,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:56:14,305 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:56:14,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:56:14,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:56:14,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:56:14,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:56:14,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:56:14,306 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:56:14,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:56:14,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:56:14,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:56:14,307 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:56:14,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:56:14,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:56:14,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:56:14,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:56:14,308 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:56:14,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:56:14,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:56:14,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:56:14,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:56:14,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:56:14,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:56:14,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:56:14,356 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:56:14,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label17.c [2019-10-02 21:56:14,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efab321a9/7cb835d21a5844129ae30c74c10492ca/FLAGdd0814aea [2019-10-02 21:56:15,180 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:56:15,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label17.c [2019-10-02 21:56:15,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efab321a9/7cb835d21a5844129ae30c74c10492ca/FLAGdd0814aea [2019-10-02 21:56:15,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efab321a9/7cb835d21a5844129ae30c74c10492ca [2019-10-02 21:56:15,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:56:15,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:56:15,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:56:15,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:56:15,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:56:15,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:56:15" (1/1) ... [2019-10-02 21:56:15,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284d3eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:15, skipping insertion in model container [2019-10-02 21:56:15,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:56:15" (1/1) ... [2019-10-02 21:56:15,282 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:56:15,407 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:56:16,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:56:16,721 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:56:17,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:56:17,182 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:56:17,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17 WrapperNode [2019-10-02 21:56:17,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:56:17,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:56:17,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:56:17,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:56:17,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (1/1) ... [2019-10-02 21:56:17,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:56:17,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:56:17,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:56:17,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:56:17,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (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 21:56:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:56:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:56:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:56:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:56:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 21:56:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:56:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:56:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:56:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 21:56:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:56:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:56:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:56:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:56:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:56:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:56:21,099 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:56:21,099 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:56:21,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:56:21 BoogieIcfgContainer [2019-10-02 21:56:21,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:56:21,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:56:21,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:56:21,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:56:21,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:56:15" (1/3) ... [2019-10-02 21:56:21,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1cc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:56:21, skipping insertion in model container [2019-10-02 21:56:21,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:56:17" (2/3) ... [2019-10-02 21:56:21,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1cc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:56:21, skipping insertion in model container [2019-10-02 21:56:21,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:56:21" (3/3) ... [2019-10-02 21:56:21,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label17.c [2019-10-02 21:56:21,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:56:21,127 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:56:21,145 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:56:21,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:56:21,172 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:56:21,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:56:21,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:56:21,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:56:21,172 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:56:21,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:56:21,172 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:56:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 21:56:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-02 21:56:21,215 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:56:21,216 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] [2019-10-02 21:56:21,217 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:56:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1487272786, now seen corresponding path program 1 times [2019-10-02 21:56:21,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:56:21,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:21,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:56:21,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:21,273 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:56:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:56:21,532 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 21:56:21,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:56:21,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:56:21,535 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:56:21,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:56:21,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:56:21,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:56:21,558 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-10-02 21:56:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:56:28,554 INFO L93 Difference]: Finished difference Result 2202 states and 3610 transitions. [2019-10-02 21:56:28,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:56:28,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-02 21:56:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:56:28,600 INFO L225 Difference]: With dead ends: 2202 [2019-10-02 21:56:28,600 INFO L226 Difference]: Without dead ends: 2114 [2019-10-02 21:56:28,602 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:56:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-02 21:56:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-10-02 21:56:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-10-02 21:56:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3476 transitions. [2019-10-02 21:56:28,754 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3476 transitions. Word has length 37 [2019-10-02 21:56:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:56:28,755 INFO L475 AbstractCegarLoop]: Abstraction has 2114 states and 3476 transitions. [2019-10-02 21:56:28,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:56:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3476 transitions. [2019-10-02 21:56:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-02 21:56:28,763 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:56:28,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:28,766 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:56:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:28,767 INFO L82 PathProgramCache]: Analyzing trace with hash -270817417, now seen corresponding path program 1 times [2019-10-02 21:56:28,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:56:28,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:28,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:56:28,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:28,772 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:56:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:56:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:56:28,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:56:28,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:56:28,996 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:56:28,997 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:56:28,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:56:28,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:56:28,998 INFO L87 Difference]: Start difference. First operand 2114 states and 3476 transitions. Second operand 5 states. [2019-10-02 21:56:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:56:34,714 INFO L93 Difference]: Finished difference Result 4328 states and 6754 transitions. [2019-10-02 21:56:34,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:56:34,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2019-10-02 21:56:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:56:34,751 INFO L225 Difference]: With dead ends: 4328 [2019-10-02 21:56:34,751 INFO L226 Difference]: Without dead ends: 4328 [2019-10-02 21:56:34,752 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 21:56:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-10-02 21:56:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-10-02 21:56:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-10-02 21:56:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6660 transitions. [2019-10-02 21:56:34,913 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6660 transitions. Word has length 106 [2019-10-02 21:56:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:56:34,915 INFO L475 AbstractCegarLoop]: Abstraction has 4296 states and 6660 transitions. [2019-10-02 21:56:34,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:56:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6660 transitions. [2019-10-02 21:56:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-02 21:56:34,924 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:56:34,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:34,925 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:56:34,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:34,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1363746410, now seen corresponding path program 1 times [2019-10-02 21:56:34,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:56:34,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:34,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:56:34,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:34,931 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:56:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:56:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:56:35,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:56:35,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 21:56:35,181 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:56:35,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 21:56:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 21:56:35,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:56:35,184 INFO L87 Difference]: Start difference. First operand 4296 states and 6660 transitions. Second operand 6 states. [2019-10-02 21:56:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:56:40,066 INFO L93 Difference]: Finished difference Result 6539 states and 8693 transitions. [2019-10-02 21:56:40,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:56:40,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-02 21:56:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:56:40,096 INFO L225 Difference]: With dead ends: 6539 [2019-10-02 21:56:40,096 INFO L226 Difference]: Without dead ends: 6539 [2019-10-02 21:56:40,097 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 21:56:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-10-02 21:56:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-10-02 21:56:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-10-02 21:56:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8565 transitions. [2019-10-02 21:56:40,250 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8565 transitions. Word has length 133 [2019-10-02 21:56:40,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:56:40,251 INFO L475 AbstractCegarLoop]: Abstraction has 6505 states and 8565 transitions. [2019-10-02 21:56:40,251 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 21:56:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8565 transitions. [2019-10-02 21:56:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-02 21:56:40,256 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:56:40,257 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 21:56:40,257 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:56:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:40,257 INFO L82 PathProgramCache]: Analyzing trace with hash -115419733, now seen corresponding path program 1 times [2019-10-02 21:56:40,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:56:40,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:40,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:56:40,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:40,263 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:56:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:56:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-02 21:56:40,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:56:40,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:56:40,492 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:56:40,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:56:40,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:56:40,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:56:40,495 INFO L87 Difference]: Start difference. First operand 6505 states and 8565 transitions. Second operand 4 states. [2019-10-02 21:56:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:56:46,932 INFO L93 Difference]: Finished difference Result 19354 states and 25170 transitions. [2019-10-02 21:56:46,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:56:46,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2019-10-02 21:56:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:56:47,015 INFO L225 Difference]: With dead ends: 19354 [2019-10-02 21:56:47,015 INFO L226 Difference]: Without dead ends: 19354 [2019-10-02 21:56:47,015 INFO L640 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 [2019-10-02 21:56:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19354 states. [2019-10-02 21:56:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19354 to 18652. [2019-10-02 21:56:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18652 states. [2019-10-02 21:56:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18652 states to 18652 states and 24319 transitions. [2019-10-02 21:56:47,509 INFO L78 Accepts]: Start accepts. Automaton has 18652 states and 24319 transitions. Word has length 212 [2019-10-02 21:56:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:56:47,514 INFO L475 AbstractCegarLoop]: Abstraction has 18652 states and 24319 transitions. [2019-10-02 21:56:47,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:56:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18652 states and 24319 transitions. [2019-10-02 21:56:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-02 21:56:47,523 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:56:47,524 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 21:56:47,524 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:56:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash -461049505, now seen corresponding path program 1 times [2019-10-02 21:56:47,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:56:47,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:47,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:56:47,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:56:47,526 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:56:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:56:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:56:47,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 21:56:47,795 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 21:56:47,796 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2019-10-02 21:56:47,798 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1827], [1829], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 21:56:47,845 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 21:56:47,845 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 21:56:54,437 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 21:56:54,439 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 271 root evaluator evaluations with a maximum evaluation depth of 13. Performed 271 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 21:56:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:56:54,444 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 21:57:01,571 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.76% of their original sizes. [2019-10-02 21:57:01,572 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 21:57:01,662 INFO L420 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2019-10-02 21:57:01,662 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 21:57:01,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 21:57:01,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 21:57:01,664 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:57:01,664 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 21:57:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 21:57:01,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 21:57:01,665 INFO L87 Difference]: Start difference. First operand 18652 states and 24319 transitions. Second operand 10 states. [2019-10-02 21:59:25,716 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.