java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:18:31,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:18:31,015 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:18:31,031 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:18:31,031 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:18:31,032 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:18:31,034 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:18:31,035 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:18:31,037 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:18:31,038 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:18:31,039 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:18:31,039 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:18:31,040 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:18:31,041 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:18:31,042 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:18:31,043 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:18:31,044 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:18:31,045 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:18:31,047 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:18:31,049 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:18:31,050 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:18:31,051 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:18:31,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:18:31,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:18:31,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:18:31,055 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:18:31,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:18:31,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:18:31,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:18:31,060 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:18:31,060 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:18:31,060 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:18:31,061 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:18:31,061 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:18:31,062 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:18:31,063 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:18:31,063 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:18:31,080 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:18:31,080 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:18:31,081 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:18:31,081 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:18:31,081 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:18:31,081 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:18:31,081 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:18:31,082 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:18:31,082 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:18:31,082 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:18:31,082 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:18:31,082 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:18:31,083 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:18:31,083 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:18:31,083 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:18:31,084 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:18:31,084 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:18:31,084 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:18:31,084 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:18:31,084 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:18:31,085 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:18:31,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:18:31,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:18:31,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:18:31,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:18:31,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:18:31,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:18:31,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:18:31,086 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:18:31,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:18:31,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:18:31,087 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:18:31,087 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:18:31,087 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:18:31,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:18:31,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:18:31,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:18:31,155 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:18:31,155 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:18:31,156 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-10-24 21:18:31,215 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18d6d2851/854fb9cffe9d4c6bac58938dc7421c17/FLAG03176bc79 [2018-10-24 21:18:31,988 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:18:31,989 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-10-24 21:18:32,023 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18d6d2851/854fb9cffe9d4c6bac58938dc7421c17/FLAG03176bc79 [2018-10-24 21:18:32,045 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18d6d2851/854fb9cffe9d4c6bac58938dc7421c17 [2018-10-24 21:18:32,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:18:32,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:18:32,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:32,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:18:32,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:18:32,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:32" (1/1) ... [2018-10-24 21:18:32,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:32, skipping insertion in model container [2018-10-24 21:18:32,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:32" (1/1) ... [2018-10-24 21:18:32,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:18:32,262 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:18:33,635 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:33,643 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:18:34,192 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:34,226 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:18:34,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34 WrapperNode [2018-10-24 21:18:34,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:34,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:34,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:18:34,228 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:18:34,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:34,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:18:34,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:18:34,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:18:34,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... [2018-10-24 21:18:34,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:18:34,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:18:34,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:18:34,969 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:18:34,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:18:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:18:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:18:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:18:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:18:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:18:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:18:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:18:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:18:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:18:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:18:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:18:35,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:18:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:18:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:18:45,953 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:18:45,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:45 BoogieIcfgContainer [2018-10-24 21:18:45,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:18:45,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:18:45,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:18:45,959 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:18:45,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:18:32" (1/3) ... [2018-10-24 21:18:45,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409fce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:45, skipping insertion in model container [2018-10-24 21:18:45,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:34" (2/3) ... [2018-10-24 21:18:45,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409fce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:45, skipping insertion in model container [2018-10-24 21:18:45,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:45" (3/3) ... [2018-10-24 21:18:45,963 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label11_true-unreach-call.c [2018-10-24 21:18:45,973 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:18:45,984 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:18:46,001 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:18:46,051 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:18:46,051 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:18:46,051 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:18:46,051 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:18:46,051 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:18:46,052 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:18:46,052 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:18:46,052 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:18:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:18:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 21:18:46,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:46,103 INFO L375 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] [2018-10-24 21:18:46,106 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:46,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash 527324292, now seen corresponding path program 1 times [2018-10-24 21:18:46,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:46,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:46,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:46,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:46,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:46,562 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:46,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:46,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:18:46,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:46,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:18:46,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:18:46,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:46,709 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:18:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:55,247 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:18:55,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:18:55,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-10-24 21:18:55,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:55,282 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:18:55,282 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:18:55,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:18:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:18:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:18:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-10-24 21:18:55,468 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 46 [2018-10-24 21:18:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:55,469 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-10-24 21:18:55,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:18:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-10-24 21:18:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 21:18:55,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:55,483 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:18:55,483 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:55,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash 760022770, now seen corresponding path program 1 times [2018-10-24 21:18:55,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:55,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:55,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:55,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:55,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:55,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:55,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:18:55,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:55,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:18:55,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:18:55,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:18:55,832 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 5 states. [2018-10-24 21:19:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:08,499 INFO L93 Difference]: Finished difference Result 4873 states and 9168 transitions. [2018-10-24 21:19:08,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:19:08,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-24 21:19:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:08,531 INFO L225 Difference]: With dead ends: 4873 [2018-10-24 21:19:08,533 INFO L226 Difference]: Without dead ends: 3275 [2018-10-24 21:19:08,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-24 21:19:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-24 21:19:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-24 21:19:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5443 transitions. [2018-10-24 21:19:08,659 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5443 transitions. Word has length 116 [2018-10-24 21:19:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:08,660 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 5443 transitions. [2018-10-24 21:19:08,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:19:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5443 transitions. [2018-10-24 21:19:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 21:19:08,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:08,664 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:08,665 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:08,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash -188199482, now seen corresponding path program 1 times [2018-10-24 21:19:08,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:08,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:08,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:08,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:08,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:08,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:08,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:19:08,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:08,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:19:08,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:19:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:19:08,918 INFO L87 Difference]: Start difference. First operand 3241 states and 5443 transitions. Second operand 4 states. [2018-10-24 21:19:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:18,098 INFO L93 Difference]: Finished difference Result 12687 states and 22043 transitions. [2018-10-24 21:19:18,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:19:18,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-24 21:19:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:18,168 INFO L225 Difference]: With dead ends: 12687 [2018-10-24 21:19:18,168 INFO L226 Difference]: Without dead ends: 9452 [2018-10-24 21:19:18,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:19:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2018-10-24 21:19:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9452. [2018-10-24 21:19:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9452 states. [2018-10-24 21:19:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 14496 transitions. [2018-10-24 21:19:18,446 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 14496 transitions. Word has length 122 [2018-10-24 21:19:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:18,447 INFO L481 AbstractCegarLoop]: Abstraction has 9452 states and 14496 transitions. [2018-10-24 21:19:18,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:19:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 14496 transitions. [2018-10-24 21:19:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 21:19:18,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:18,455 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:18,455 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:18,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash -936516781, now seen corresponding path program 1 times [2018-10-24 21:19:18,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:18,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:18,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:18,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:18,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:19,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:19,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:19,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:19,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:19,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:19,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:19,021 INFO L87 Difference]: Start difference. First operand 9452 states and 14496 transitions. Second operand 6 states. [2018-10-24 21:19:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:37,998 INFO L93 Difference]: Finished difference Result 37982 states and 62849 transitions. [2018-10-24 21:19:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:37,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-24 21:19:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:38,160 INFO L225 Difference]: With dead ends: 37982 [2018-10-24 21:19:38,160 INFO L226 Difference]: Without dead ends: 28536 [2018-10-24 21:19:38,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:19:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2018-10-24 21:19:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 28474. [2018-10-24 21:19:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28474 states. [2018-10-24 21:19:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28474 states to 28474 states and 42853 transitions. [2018-10-24 21:19:39,161 INFO L78 Accepts]: Start accepts. Automaton has 28474 states and 42853 transitions. Word has length 173 [2018-10-24 21:19:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:39,161 INFO L481 AbstractCegarLoop]: Abstraction has 28474 states and 42853 transitions. [2018-10-24 21:19:39,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 28474 states and 42853 transitions. [2018-10-24 21:19:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 21:19:39,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:39,182 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:39,182 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:39,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash 874053335, now seen corresponding path program 1 times [2018-10-24 21:19:39,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:39,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:39,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:39,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:39,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:39,570 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:40,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:40,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:40,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:40,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:40,004 INFO L87 Difference]: Start difference. First operand 28474 states and 42853 transitions. Second operand 6 states. [2018-10-24 21:19:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:48,838 INFO L93 Difference]: Finished difference Result 81793 states and 130019 transitions. [2018-10-24 21:19:48,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:48,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-10-24 21:19:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:49,164 INFO L225 Difference]: With dead ends: 81793 [2018-10-24 21:19:49,164 INFO L226 Difference]: Without dead ends: 53325 [2018-10-24 21:19:49,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:19:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2018-10-24 21:19:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 53195. [2018-10-24 21:19:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53195 states. [2018-10-24 21:19:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53195 states to 53195 states and 81477 transitions. [2018-10-24 21:19:50,753 INFO L78 Accepts]: Start accepts. Automaton has 53195 states and 81477 transitions. Word has length 251 [2018-10-24 21:19:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:50,753 INFO L481 AbstractCegarLoop]: Abstraction has 53195 states and 81477 transitions. [2018-10-24 21:19:50,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 53195 states and 81477 transitions. [2018-10-24 21:19:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-24 21:19:50,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:50,776 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:19:50,776 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:50,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:50,776 INFO L82 PathProgramCache]: Analyzing trace with hash 851199661, now seen corresponding path program 1 times [2018-10-24 21:19:50,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:50,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:50,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:50,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:50,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:51,125 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 78 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:19:51,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:19:51,442 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:19:51,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 270 with the following transitions: [2018-10-24 21:19:51,447 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2135], [2137], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2360], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2692], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:19:51,535 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:19:51,535 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:19:57,322 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:19:57,324 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:19:57,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:57,347 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:20:00,162 INFO L232 lantSequenceWeakener]: Weakened 261 states. On average, predicates are now at 75.47% of their original sizes. [2018-10-24 21:20:00,163 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:20:01,010 INFO L413 sIntCurrentIteration]: We have 268 unified AI predicates [2018-10-24 21:20:01,010 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:20:01,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:20:01,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-24 21:20:01,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:01,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 21:20:01,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 21:20:01,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:20:01,013 INFO L87 Difference]: Start difference. First operand 53195 states and 81477 transitions. Second operand 9 states. [2018-10-24 21:20:09,871 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown