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/Problem11_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:18:58,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:18:58,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:18:58,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 15:18:58,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 15:18:58,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 15:18:58,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 15:18:58,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 15:18:58,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 15:18:58,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 15:18:58,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 15:18:58,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 15:18:58,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 15:18:58,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 15:18:58,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 15:18:58,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 15:18:58,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 15:18:58,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 15:18:58,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 15:18:58,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 15:18:58,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 15:18:58,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 15:18:58,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 15:18:58,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 15:18:58,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 15:18:58,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 15:18:58,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 15:18:58,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 15:18:58,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 15:18:58,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 15:18:58,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 15:18:58,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 15:18:58,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 15:18:58,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 15:18:58,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 15:18:58,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 15:18:58,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 15:18:58,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 15:18:58,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 15:18:58,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 15:18:58,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 15:18:58,095 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 15:18:58,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:18:58,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:18:58,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:18:58,111 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:18:58,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:18:58,112 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:18:58,112 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:18:58,114 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:18:58,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:18:58,115 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:18:58,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:18:58,115 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:18:58,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:18:58,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:18:58,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:18:58,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:18:58,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:18:58,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:18:58,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:18:58,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:18:58,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:18:58,119 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:18:58,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:18:58,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:18:58,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:18:58,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:18:58,120 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:18:58,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:18:58,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:18:58,120 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:18:58,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:18:58,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:18:58,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:18:58,165 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:18:58,165 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:18:58,166 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-09-09 15:18:58,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a064ad3/cf6672b82ce3407c88e8b84a7869b96c/FLAG1f5756f00 [2019-09-09 15:18:58,809 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:18:58,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-09-09 15:18:58,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a064ad3/cf6672b82ce3407c88e8b84a7869b96c/FLAG1f5756f00 [2019-09-09 15:18:59,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a064ad3/cf6672b82ce3407c88e8b84a7869b96c [2019-09-09 15:18:59,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:18:59,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:18:59,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:18:59,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:18:59,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:18:59,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:18:59" (1/1) ... [2019-09-09 15:18:59,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:18:59, skipping insertion in model container [2019-09-09 15:18:59,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:18:59" (1/1) ... [2019-09-09 15:18:59,081 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:18:59,161 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:18:59,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:18:59,808 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:18:59,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:19:00,004 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:19:00,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00 WrapperNode [2019-09-09 15:19:00,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:19:00,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:19:00,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:19:00,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:19:00,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (1/1) ... [2019-09-09 15:19:00,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:19:00,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:19:00,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:19:00,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:19:00,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (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 15:19:00,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:19:00,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:19:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:19:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:19:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:19:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:19:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:19:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:19:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:19:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:19:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:19:02,284 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:19:02,285 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:19:02,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:19:02 BoogieIcfgContainer [2019-09-09 15:19:02,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:19:02,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:19:02,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:19:02,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:19:02,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:18:59" (1/3) ... [2019-09-09 15:19:02,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4197ac72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:19:02, skipping insertion in model container [2019-09-09 15:19:02,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:19:00" (2/3) ... [2019-09-09 15:19:02,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4197ac72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:19:02, skipping insertion in model container [2019-09-09 15:19:02,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:19:02" (3/3) ... [2019-09-09 15:19:02,295 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label27.c [2019-09-09 15:19:02,306 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:19:02,314 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:19:02,332 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:19:02,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:19:02,360 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:19:02,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:19:02,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:19:02,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:19:02,361 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:19:02,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:19:02,361 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:19:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-09 15:19:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-09 15:19:02,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:19:02,400 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] [2019-09-09 15:19:02,402 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:19:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:19:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1647483275, now seen corresponding path program 1 times [2019-09-09 15:19:02,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:19:02,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:02,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:19:02,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:02,485 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:19:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:19:02,779 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 15:19:02,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:19:02,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:19:02,782 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:19:02,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:19:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:19:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:19:02,806 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-09-09 15:19:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:19:05,177 INFO L93 Difference]: Finished difference Result 706 states and 965 transitions. [2019-09-09 15:19:05,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:19:05,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2019-09-09 15:19:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:19:05,230 INFO L225 Difference]: With dead ends: 706 [2019-09-09 15:19:05,230 INFO L226 Difference]: Without dead ends: 618 [2019-09-09 15:19:05,232 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 15:19:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-09-09 15:19:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 419. [2019-09-09 15:19:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-09-09 15:19:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 604 transitions. [2019-09-09 15:19:05,307 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 604 transitions. Word has length 48 [2019-09-09 15:19:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:19:05,308 INFO L475 AbstractCegarLoop]: Abstraction has 419 states and 604 transitions. [2019-09-09 15:19:05,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:19:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 604 transitions. [2019-09-09 15:19:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-09 15:19:05,315 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:19:05,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:05,316 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:19:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:19:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2032953802, now seen corresponding path program 1 times [2019-09-09 15:19:05,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:19:05,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:05,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:19:05,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:05,321 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:19:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:19:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:19:05,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:19:05,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:19:05,622 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:19:05,624 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:19:05,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:19:05,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:19:05,626 INFO L87 Difference]: Start difference. First operand 419 states and 604 transitions. Second operand 6 states. [2019-09-09 15:19:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:19:07,200 INFO L93 Difference]: Finished difference Result 823 states and 1189 transitions. [2019-09-09 15:19:07,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:19:07,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-09-09 15:19:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:19:07,207 INFO L225 Difference]: With dead ends: 823 [2019-09-09 15:19:07,208 INFO L226 Difference]: Without dead ends: 823 [2019-09-09 15:19:07,211 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 15:19:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2019-09-09 15:19:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 808. [2019-09-09 15:19:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-09-09 15:19:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1155 transitions. [2019-09-09 15:19:07,257 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1155 transitions. Word has length 120 [2019-09-09 15:19:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:19:07,258 INFO L475 AbstractCegarLoop]: Abstraction has 808 states and 1155 transitions. [2019-09-09 15:19:07,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:19:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1155 transitions. [2019-09-09 15:19:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-09 15:19:07,261 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:19:07,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:07,262 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:19:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:19:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 664653149, now seen corresponding path program 1 times [2019-09-09 15:19:07,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:19:07,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:07,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:19:07,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:07,264 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:19:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:19:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:19:07,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:19:07,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:19:07,379 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:19:07,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:19:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:19:07,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:19:07,382 INFO L87 Difference]: Start difference. First operand 808 states and 1155 transitions. Second operand 4 states. [2019-09-09 15:19:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:19:09,172 INFO L93 Difference]: Finished difference Result 1588 states and 2202 transitions. [2019-09-09 15:19:09,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:19:09,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-09-09 15:19:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:19:09,183 INFO L225 Difference]: With dead ends: 1588 [2019-09-09 15:19:09,183 INFO L226 Difference]: Without dead ends: 1588 [2019-09-09 15:19:09,183 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 15:19:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2019-09-09 15:19:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1382. [2019-09-09 15:19:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-09-09 15:19:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1925 transitions. [2019-09-09 15:19:09,225 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1925 transitions. Word has length 121 [2019-09-09 15:19:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:19:09,226 INFO L475 AbstractCegarLoop]: Abstraction has 1382 states and 1925 transitions. [2019-09-09 15:19:09,226 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:19:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1925 transitions. [2019-09-09 15:19:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-09 15:19:09,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:19:09,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:09,230 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:19:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:19:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1062949639, now seen corresponding path program 1 times [2019-09-09 15:19:09,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:19:09,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:09,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:19:09,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:09,232 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:19:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:19:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:19:09,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:19:09,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 15:19:09,349 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:19:09,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 15:19:09,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 15:19:09,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 15:19:09,351 INFO L87 Difference]: Start difference. First operand 1382 states and 1925 transitions. Second operand 5 states. [2019-09-09 15:19:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:19:10,991 INFO L93 Difference]: Finished difference Result 2612 states and 3600 transitions. [2019-09-09 15:19:10,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 15:19:10,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2019-09-09 15:19:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:19:11,011 INFO L225 Difference]: With dead ends: 2612 [2019-09-09 15:19:11,012 INFO L226 Difference]: Without dead ends: 2612 [2019-09-09 15:19:11,012 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 15:19:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2019-09-09 15:19:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2572. [2019-09-09 15:19:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2572 states. [2019-09-09 15:19:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3448 transitions. [2019-09-09 15:19:11,115 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3448 transitions. Word has length 123 [2019-09-09 15:19:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:19:11,116 INFO L475 AbstractCegarLoop]: Abstraction has 2572 states and 3448 transitions. [2019-09-09 15:19:11,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 15:19:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3448 transitions. [2019-09-09 15:19:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-09-09 15:19:11,124 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:19:11,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:11,125 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:19:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:19:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash 669937364, now seen corresponding path program 1 times [2019-09-09 15:19:11,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:19:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:11,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:19:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:19:11,127 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:19:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:19:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:19:11,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:19:11,462 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:19:11,463 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2019-09-09 15:19:11,466 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-09-09 15:19:11,568 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:19:11,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:22:32,466 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 15:25:02,066 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:25:02,069 INFO L272 AbstractInterpreter]: Visited 138 different actions 271 times. Merged at 4 different actions 5 times. Never widened. Performed 651 root evaluator evaluations with a maximum evaluation depth of 17. Performed 651 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2019-09-09 15:25:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:25:02,074 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:27:11,443 INFO L227 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 73.62% of their original sizes. [2019-09-09 15:27:11,444 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:27:11,569 INFO L420 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2019-09-09 15:27:11,569 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:27:11,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:27:11,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2019-09-09 15:27:11,570 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:27:11,571 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-09 15:27:11,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-09 15:27:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-09-09 15:27:11,572 INFO L87 Difference]: Start difference. First operand 2572 states and 3448 transitions. Second operand 13 states.