java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:54:38,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:54:38,974 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:54:38,991 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:54:38,991 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:54:38,993 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:54:38,995 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:54:38,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:54:39,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:54:39,009 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:54:39,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:54:39,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:54:39,014 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:54:39,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:54:39,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:54:39,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:54:39,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:54:39,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:54:39,029 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:54:39,033 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:54:39,034 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:54:39,036 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:54:39,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:54:39,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:54:39,040 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:54:39,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:54:39,042 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:54:39,044 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:54:39,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:54:39,047 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:54:39,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:54:39,049 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:54:39,050 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:54:39,050 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:54:39,051 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:54:39,052 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:54:39,052 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:54:39,085 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:54:39,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:54:39,087 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:54:39,088 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:54:39,088 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:54:39,088 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:54:39,088 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:54:39,089 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:54:39,089 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:54:39,090 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:54:39,090 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:54:39,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:54:39,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:54:39,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:54:39,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:54:39,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:54:39,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:54:39,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:54:39,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:54:39,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:54:39,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:54:39,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:54:39,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:54:39,093 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:54:39,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:54:39,095 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:54:39,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:54:39,096 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:54:39,096 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:54:39,096 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:54:39,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:54:39,097 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:54:39,097 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:54:39,097 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:54:39,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:54:39,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:54:39,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:54:39,196 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:54:39,197 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:54:39,197 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-11-07 14:54:39,270 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5123401/9877ac8efba7429198b078ed303fe780/FLAG09490036c [2018-11-07 14:54:40,134 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:54:40,135 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-11-07 14:54:40,179 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5123401/9877ac8efba7429198b078ed303fe780/FLAG09490036c [2018-11-07 14:54:40,200 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5123401/9877ac8efba7429198b078ed303fe780 [2018-11-07 14:54:40,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:54:40,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:54:40,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:54:40,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:54:40,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:54:40,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:40" (1/1) ... [2018-11-07 14:54:40,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:40, skipping insertion in model container [2018-11-07 14:54:40,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:40" (1/1) ... [2018-11-07 14:54:40,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:54:40,408 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:54:41,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:54:41,908 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:54:42,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:54:42,728 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:54:42,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42 WrapperNode [2018-11-07 14:54:42,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:54:42,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:54:42,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:54:42,730 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:54:42,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:54:43,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:54:43,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:54:43,102 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:54:43,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (1/1) ... [2018-11-07 14:54:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:54:43,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:54:43,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:54:43,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:54:43,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (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 [2018-11-07 14:54:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:54:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:54:43,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:54:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:54:43,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:54:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:54:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:54:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:54:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:54:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:54:43,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:54:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:54:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:54:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:54:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:54:54,111 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:54:54,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:54:54 BoogieIcfgContainer [2018-11-07 14:54:54,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:54:54,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:54:54,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:54:54,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:54:54,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:54:40" (1/3) ... [2018-11-07 14:54:54,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:54:54, skipping insertion in model container [2018-11-07 14:54:54,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:42" (2/3) ... [2018-11-07 14:54:54,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:54:54, skipping insertion in model container [2018-11-07 14:54:54,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:54:54" (3/3) ... [2018-11-07 14:54:54,121 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52_true-unreach-call.c [2018-11-07 14:54:54,132 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:54:54,142 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:54:54,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:54:54,215 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:54:54,216 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:54:54,216 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:54:54,216 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:54:54,216 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:54:54,216 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:54:54,216 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:54:54,216 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:54:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:54:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 14:54:54,281 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:54,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:54,285 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:54,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:54,291 INFO L82 PathProgramCache]: Analyzing trace with hash -774157709, now seen corresponding path program 1 times [2018-11-07 14:54:54,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:54,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:54,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:54,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:54,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:54,843 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:54,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:54,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:54:54,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:54,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:54:54,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:54:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:54:54,994 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 14:55:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:03,682 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-11-07 14:55:03,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:55:03,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-07 14:55:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:03,719 INFO L225 Difference]: With dead ends: 3093 [2018-11-07 14:55:03,720 INFO L226 Difference]: Without dead ends: 1971 [2018-11-07 14:55:03,729 INFO L604 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 [2018-11-07 14:55:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-11-07 14:55:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-11-07 14:55:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 14:55:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-11-07 14:55:03,895 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 71 [2018-11-07 14:55:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:03,897 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-11-07 14:55:03,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:55:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-11-07 14:55:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 14:55:03,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:03,910 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, 2, 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] [2018-11-07 14:55:03,911 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:03,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1438454356, now seen corresponding path program 1 times [2018-11-07 14:55:03,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:03,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:03,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:03,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:03,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:04,362 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:55:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:55:04,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:55:04,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:55:04,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:04,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:55:04,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:55:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:55:04,754 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-11-07 14:55:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:20,056 INFO L93 Difference]: Finished difference Result 5630 states and 10205 transitions. [2018-11-07 14:55:20,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:55:20,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 14:55:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:20,088 INFO L225 Difference]: With dead ends: 5630 [2018-11-07 14:55:20,088 INFO L226 Difference]: Without dead ends: 3679 [2018-11-07 14:55:20,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:55:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2018-11-07 14:55:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3636. [2018-11-07 14:55:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2018-11-07 14:55:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5828 transitions. [2018-11-07 14:55:20,211 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5828 transitions. Word has length 154 [2018-11-07 14:55:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:20,212 INFO L480 AbstractCegarLoop]: Abstraction has 3636 states and 5828 transitions. [2018-11-07 14:55:20,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:55:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5828 transitions. [2018-11-07 14:55:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 14:55:20,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:20,228 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, 2, 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] [2018-11-07 14:55:20,228 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:20,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1449223166, now seen corresponding path program 1 times [2018-11-07 14:55:20,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:20,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:20,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:20,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:20,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:55:20,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:55:20,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:55:20,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:20,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:55:20,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:55:20,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:55:20,465 INFO L87 Difference]: Start difference. First operand 3636 states and 5828 transitions. Second operand 5 states. [2018-11-07 14:55:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:36,341 INFO L93 Difference]: Finished difference Result 13450 states and 21898 transitions. [2018-11-07 14:55:36,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:55:36,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 14:55:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:36,412 INFO L225 Difference]: With dead ends: 13450 [2018-11-07 14:55:36,412 INFO L226 Difference]: Without dead ends: 9820 [2018-11-07 14:55:36,431 INFO L604 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 [2018-11-07 14:55:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2018-11-07 14:55:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9623. [2018-11-07 14:55:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9623 states. [2018-11-07 14:55:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9623 states to 9623 states and 14633 transitions. [2018-11-07 14:55:36,707 INFO L78 Accepts]: Start accepts. Automaton has 9623 states and 14633 transitions. Word has length 161 [2018-11-07 14:55:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:36,708 INFO L480 AbstractCegarLoop]: Abstraction has 9623 states and 14633 transitions. [2018-11-07 14:55:36,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:55:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9623 states and 14633 transitions. [2018-11-07 14:55:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 14:55:36,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:36,715 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, 2, 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] [2018-11-07 14:55:36,719 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:36,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:36,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2036148572, now seen corresponding path program 1 times [2018-11-07 14:55:36,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:36,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:36,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:36,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:55:37,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:55:37,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:55:37,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:37,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:55:37,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:55:37,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:55:37,081 INFO L87 Difference]: Start difference. First operand 9623 states and 14633 transitions. Second operand 5 states. [2018-11-07 14:55:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:46,597 INFO L93 Difference]: Finished difference Result 28946 states and 45937 transitions. [2018-11-07 14:55:46,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:55:46,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-11-07 14:55:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:46,700 INFO L225 Difference]: With dead ends: 28946 [2018-11-07 14:55:46,701 INFO L226 Difference]: Without dead ends: 19329 [2018-11-07 14:55:46,733 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:55:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19329 states. [2018-11-07 14:55:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19329 to 18999. [2018-11-07 14:55:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18999 states. [2018-11-07 14:55:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18999 states to 18999 states and 27487 transitions. [2018-11-07 14:55:47,240 INFO L78 Accepts]: Start accepts. Automaton has 18999 states and 27487 transitions. Word has length 170 [2018-11-07 14:55:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:47,240 INFO L480 AbstractCegarLoop]: Abstraction has 18999 states and 27487 transitions. [2018-11-07 14:55:47,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:55:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 18999 states and 27487 transitions. [2018-11-07 14:55:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 14:55:47,250 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:47,250 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, 2, 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] [2018-11-07 14:55:47,251 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:47,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1111253638, now seen corresponding path program 1 times [2018-11-07 14:55:47,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:47,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:47,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:47,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:47,252 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:47,504 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:55:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:55:47,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:55:47,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:55:47,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:47,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:55:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:55:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:55:47,869 INFO L87 Difference]: Start difference. First operand 18999 states and 27487 transitions. Second operand 6 states. [2018-11-07 14:55:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:59,633 INFO L93 Difference]: Finished difference Result 58216 states and 91373 transitions. [2018-11-07 14:55:59,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:55:59,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 14:55:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:59,815 INFO L225 Difference]: With dead ends: 58216 [2018-11-07 14:55:59,816 INFO L226 Difference]: Without dead ends: 39223 [2018-11-07 14:55:59,909 INFO L604 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 [2018-11-07 14:55:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39223 states. [2018-11-07 14:56:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39223 to 39047. [2018-11-07 14:56:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39047 states. [2018-11-07 14:56:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39047 states to 39047 states and 54715 transitions. [2018-11-07 14:56:00,818 INFO L78 Accepts]: Start accepts. Automaton has 39047 states and 54715 transitions. Word has length 181 [2018-11-07 14:56:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:56:00,818 INFO L480 AbstractCegarLoop]: Abstraction has 39047 states and 54715 transitions. [2018-11-07 14:56:00,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:56:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 39047 states and 54715 transitions. [2018-11-07 14:56:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 14:56:00,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:56:00,831 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, 2, 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] [2018-11-07 14:56:00,831 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:56:00,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:56:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -747971991, now seen corresponding path program 1 times [2018-11-07 14:56:00,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:56:00,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:00,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:56:00,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:00,833 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:56:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:56:01,098 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:56:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:56:01,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:56:01,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:56:01,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:56:01,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:56:01,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:56:01,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:56:01,460 INFO L87 Difference]: Start difference. First operand 39047 states and 54715 transitions. Second operand 6 states. [2018-11-07 14:56:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:56:10,025 INFO L93 Difference]: Finished difference Result 98710 states and 156662 transitions. [2018-11-07 14:56:10,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:56:10,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-11-07 14:56:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:56:10,338 INFO L225 Difference]: With dead ends: 98710 [2018-11-07 14:56:10,339 INFO L226 Difference]: Without dead ends: 59669 [2018-11-07 14:56:10,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:56:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59669 states. [2018-11-07 14:56:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59669 to 59442. [2018-11-07 14:56:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59442 states. [2018-11-07 14:56:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59442 states to 59442 states and 85231 transitions. [2018-11-07 14:56:11,974 INFO L78 Accepts]: Start accepts. Automaton has 59442 states and 85231 transitions. Word has length 190 [2018-11-07 14:56:11,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:56:11,974 INFO L480 AbstractCegarLoop]: Abstraction has 59442 states and 85231 transitions. [2018-11-07 14:56:11,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:56:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 59442 states and 85231 transitions. [2018-11-07 14:56:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 14:56:12,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:56:12,012 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, 2, 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] [2018-11-07 14:56:12,012 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:56:12,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:56:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1403677423, now seen corresponding path program 1 times [2018-11-07 14:56:12,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:56:12,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:12,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:56:12,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:12,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:56:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:56:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:56:13,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:56:13,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:56:13,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:56:13,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:56:13,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:56:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:56:13,079 INFO L87 Difference]: Start difference. First operand 59442 states and 85231 transitions. Second operand 6 states. [2018-11-07 14:56:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:56:20,801 INFO L93 Difference]: Finished difference Result 124489 states and 183187 transitions. [2018-11-07 14:56:20,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:56:20,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-11-07 14:56:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:56:21,059 INFO L225 Difference]: With dead ends: 124489 [2018-11-07 14:56:21,060 INFO L226 Difference]: Without dead ends: 65053 [2018-11-07 14:56:21,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:56:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65053 states. [2018-11-07 14:56:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65053 to 64927. [2018-11-07 14:56:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64927 states. [2018-11-07 14:56:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64927 states to 64927 states and 87972 transitions. [2018-11-07 14:56:23,234 INFO L78 Accepts]: Start accepts. Automaton has 64927 states and 87972 transitions. Word has length 265 [2018-11-07 14:56:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:56:23,235 INFO L480 AbstractCegarLoop]: Abstraction has 64927 states and 87972 transitions. [2018-11-07 14:56:23,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:56:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 64927 states and 87972 transitions. [2018-11-07 14:56:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 14:56:23,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:56:23,269 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, 2, 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] [2018-11-07 14:56:23,269 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:56:23,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:56:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2001119171, now seen corresponding path program 1 times [2018-11-07 14:56:23,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:56:23,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:23,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:56:23,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:23,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:56:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:56:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:56:23,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:56:23,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:56:23,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:56:23,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:56:23,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:56:23,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:56:23,717 INFO L87 Difference]: Start difference. First operand 64927 states and 87972 transitions. Second operand 5 states. [2018-11-07 14:56:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:56:39,460 INFO L93 Difference]: Finished difference Result 165884 states and 236667 transitions. [2018-11-07 14:56:39,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:56:39,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-11-07 14:56:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:56:39,818 INFO L225 Difference]: With dead ends: 165884 [2018-11-07 14:56:39,818 INFO L226 Difference]: Without dead ends: 100963 [2018-11-07 14:56:39,950 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:56:40,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100963 states. [2018-11-07 14:56:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100963 to 100796. [2018-11-07 14:56:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100796 states. [2018-11-07 14:56:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100796 states to 100796 states and 143272 transitions. [2018-11-07 14:56:41,517 INFO L78 Accepts]: Start accepts. Automaton has 100796 states and 143272 transitions. Word has length 271 [2018-11-07 14:56:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:56:41,518 INFO L480 AbstractCegarLoop]: Abstraction has 100796 states and 143272 transitions. [2018-11-07 14:56:41,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:56:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 100796 states and 143272 transitions. [2018-11-07 14:56:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-11-07 14:56:41,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:56:41,548 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:56:41,549 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:56:41,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:56:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash -227591905, now seen corresponding path program 1 times [2018-11-07 14:56:41,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:56:41,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:41,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:56:41,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:56:41,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:56:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:56:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 205 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:56:42,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:56:42,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:56:42,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-11-07 14:56:42,160 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3095], [3097], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:56:42,224 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:56:42,225 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:56:43,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:56:43,280 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:56:43,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:56:43,330 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:56:45,562 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 71.77% of their original sizes. [2018-11-07 14:56:45,562 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:56:46,458 INFO L415 sIntCurrentIteration]: We unified 281 AI predicates to 281 [2018-11-07 14:56:46,460 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:56:46,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:56:46,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2018-11-07 14:56:46,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:56:46,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:56:46,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:56:46,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:56:46,463 INFO L87 Difference]: Start difference. First operand 100796 states and 143272 transitions. Second operand 11 states. [2018-11-07 14:56:55,632 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