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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:10:33,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:10:33,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:10:33,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:10:33,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:10:33,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:10:33,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:10:33,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:10:33,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:10:33,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:10:33,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:10:33,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:10:33,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:10:33,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:10:33,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:10:33,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:10:33,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:10:33,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:10:33,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:10:33,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:10:33,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:10:33,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:10:33,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:10:33,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:10:33,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:10:33,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:10:33,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:10:33,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:10:33,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:10:33,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:10:33,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:10:33,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:10:33,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:10:33,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:10:33,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:10:33,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:10:33,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:10:33,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:10:33,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:10:33,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:10:33,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:10:33,108 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 22:10:33,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:10:33,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:10:33,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:10:33,137 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:10:33,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:10:33,138 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:10:33,138 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:10:33,139 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:10:33,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:10:33,139 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:10:33,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:10:33,141 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:10:33,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:10:33,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:10:33,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:10:33,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:10:33,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:10:33,142 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:10:33,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:10:33,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:10:33,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:10:33,144 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:10:33,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:10:33,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:10:33,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:10:33,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:10:33,145 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:10:33,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:10:33,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:10:33,145 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:10:33,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:10:33,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:10:33,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:10:33,229 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:10:33,230 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:10:33,231 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-02 22:10:33,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00389a5c/b78e33a11bc84e1183f0062cdd78b792/FLAGad1971a2a [2019-10-02 22:10:33,993 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:10:33,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-02 22:10:34,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00389a5c/b78e33a11bc84e1183f0062cdd78b792/FLAGad1971a2a [2019-10-02 22:10:34,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00389a5c/b78e33a11bc84e1183f0062cdd78b792 [2019-10-02 22:10:34,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:10:34,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:10:34,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:10:34,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:10:34,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:10:34,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:10:34" (1/1) ... [2019-10-02 22:10:34,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c73edbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:34, skipping insertion in model container [2019-10-02 22:10:34,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:10:34" (1/1) ... [2019-10-02 22:10:34,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:10:34,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:10:35,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:10:35,406 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:10:35,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:10:35,996 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:10:35,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35 WrapperNode [2019-10-02 22:10:35,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:10:35,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:10:35,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:10:35,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:10:36,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (1/1) ... [2019-10-02 22:10:36,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:10:36,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:10:36,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:10:36,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:10:36,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (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 22:10:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:10:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:10:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 22:10:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 22:10:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 22:10:36,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:10:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 22:10:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 22:10:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 22:10:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:10:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:10:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:10:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:10:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:10:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:10:39,943 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:10:39,943 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 22:10:39,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:10:39 BoogieIcfgContainer [2019-10-02 22:10:39,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:10:39,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:10:39,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:10:39,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:10:39,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:10:34" (1/3) ... [2019-10-02 22:10:39,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ada6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:10:39, skipping insertion in model container [2019-10-02 22:10:39,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:10:35" (2/3) ... [2019-10-02 22:10:39,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ada6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:10:39, skipping insertion in model container [2019-10-02 22:10:39,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:10:39" (3/3) ... [2019-10-02 22:10:39,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label46.c [2019-10-02 22:10:39,967 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:10:39,976 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:10:39,995 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:10:40,027 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:10:40,028 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:10:40,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:10:40,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:10:40,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:10:40,028 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:10:40,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:10:40,029 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:10:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 22:10:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-02 22:10:40,087 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:10:40,088 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:10:40,090 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:10:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:10:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1888007721, now seen corresponding path program 1 times [2019-10-02 22:10:40,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:10:40,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:40,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:10:40,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:40,160 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:10:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:10:40,517 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 22:10:40,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:10:40,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:10:40,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:10:40,525 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:10:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:10:40,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:10:40,542 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-10-02 22:10:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:10:44,967 INFO L93 Difference]: Finished difference Result 1480 states and 2747 transitions. [2019-10-02 22:10:44,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:10:44,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-10-02 22:10:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:10:45,001 INFO L225 Difference]: With dead ends: 1480 [2019-10-02 22:10:45,001 INFO L226 Difference]: Without dead ends: 1412 [2019-10-02 22:10:45,003 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:10:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-10-02 22:10:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-10-02 22:10:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-10-02 22:10:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-10-02 22:10:45,128 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 42 [2019-10-02 22:10:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:10:45,128 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-10-02 22:10:45,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:10:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-10-02 22:10:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-02 22:10:45,134 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:10:45,134 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:45,135 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:10:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:10:45,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1067945283, now seen corresponding path program 1 times [2019-10-02 22:10:45,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:10:45,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:45,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:10:45,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:45,137 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:10:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:10:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:10:45,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:10:45,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:10:45,332 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:10:45,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:10:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:10:45,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:10:45,335 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-10-02 22:10:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:10:50,700 INFO L93 Difference]: Finished difference Result 2888 states and 5181 transitions. [2019-10-02 22:10:50,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:10:50,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2019-10-02 22:10:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:10:50,722 INFO L225 Difference]: With dead ends: 2888 [2019-10-02 22:10:50,723 INFO L226 Difference]: Without dead ends: 2888 [2019-10-02 22:10:50,724 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 22:10:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-10-02 22:10:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-10-02 22:10:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-10-02 22:10:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 5127 transitions. [2019-10-02 22:10:50,839 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 5127 transitions. Word has length 115 [2019-10-02 22:10:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:10:50,842 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 5127 transitions. [2019-10-02 22:10:50,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:10:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 5127 transitions. [2019-10-02 22:10:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-02 22:10:50,853 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:10:50,853 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:50,854 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:10:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:10:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1328815240, now seen corresponding path program 1 times [2019-10-02 22:10:50,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:10:50,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:50,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:10:50,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:50,858 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:10:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:10:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:10:51,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:10:51,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:10:51,059 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:10:51,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:10:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:10:51,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:10:51,061 INFO L87 Difference]: Start difference. First operand 2864 states and 5127 transitions. Second operand 5 states. [2019-10-02 22:10:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:10:56,547 INFO L93 Difference]: Finished difference Result 5190 states and 8230 transitions. [2019-10-02 22:10:56,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 22:10:56,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2019-10-02 22:10:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:10:56,576 INFO L225 Difference]: With dead ends: 5190 [2019-10-02 22:10:56,577 INFO L226 Difference]: Without dead ends: 5190 [2019-10-02 22:10:56,577 INFO L640 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 [2019-10-02 22:10:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2019-10-02 22:10:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5092. [2019-10-02 22:10:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5092 states. [2019-10-02 22:10:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 8027 transitions. [2019-10-02 22:10:56,733 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 8027 transitions. Word has length 118 [2019-10-02 22:10:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:10:56,734 INFO L475 AbstractCegarLoop]: Abstraction has 5092 states and 8027 transitions. [2019-10-02 22:10:56,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:10:56,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 8027 transitions. [2019-10-02 22:10:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-02 22:10:56,737 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:10:56,737 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:56,737 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:10:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:10:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1516460572, now seen corresponding path program 1 times [2019-10-02 22:10:56,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:10:56,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:56,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:10:56,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:10:56,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:10:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:10:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:10:56,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:10:56,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:10:56,879 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:10:56,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:10:56,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:10:56,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:10:56,881 INFO L87 Difference]: Start difference. First operand 5092 states and 8027 transitions. Second operand 4 states. [2019-10-02 22:11:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:11:03,507 INFO L93 Difference]: Finished difference Result 15082 states and 22373 transitions. [2019-10-02 22:11:03,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:11:03,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-02 22:11:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:11:03,585 INFO L225 Difference]: With dead ends: 15082 [2019-10-02 22:11:03,586 INFO L226 Difference]: Without dead ends: 15082 [2019-10-02 22:11:03,586 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 22:11:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15082 states. [2019-10-02 22:11:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15082 to 15082. [2019-10-02 22:11:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15082 states. [2019-10-02 22:11:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15082 states to 15082 states and 22373 transitions. [2019-10-02 22:11:04,019 INFO L78 Accepts]: Start accepts. Automaton has 15082 states and 22373 transitions. Word has length 148 [2019-10-02 22:11:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:11:04,021 INFO L475 AbstractCegarLoop]: Abstraction has 15082 states and 22373 transitions. [2019-10-02 22:11:04,022 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:11:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 15082 states and 22373 transitions. [2019-10-02 22:11:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-02 22:11:04,027 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:11:04,027 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 22:11:04,028 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:11:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:11:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 427642708, now seen corresponding path program 1 times [2019-10-02 22:11:04,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:11:04,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:11:04,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:11:04,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:11:04,030 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:11:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:11:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 70 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 22:11:04,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:11:04,189 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:11:04,190 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 188 with the following transitions: [2019-10-02 22:11:04,192 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], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [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], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 22:11:04,257 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:11:04,258 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:11:07,484 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:11:07,486 INFO L272 AbstractInterpreter]: Visited 81 different actions 81 times. Never merged. Never widened. Performed 201 root evaluator evaluations with a maximum evaluation depth of 12. Performed 201 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 22:11:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:11:07,491 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:11:10,195 INFO L227 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 78.09% of their original sizes. [2019-10-02 22:11:10,195 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:11:10,277 INFO L420 sIntCurrentIteration]: We unified 186 AI predicates to 186 [2019-10-02 22:11:10,278 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:11:10,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:11:10,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2019-10-02 22:11:10,279 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:11:10,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 22:11:10,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 22:11:10,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 22:11:10,280 INFO L87 Difference]: Start difference. First operand 15082 states and 22373 transitions. Second operand 10 states. [2019-10-02 22:12:48,065 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.