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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:39:48,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:39:48,938 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:39:48,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:39:48,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:39:48,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:39:48,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:39:48,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:39:48,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:39:48,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:39:48,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:39:48,972 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:39:48,973 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:39:48,974 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:39:48,980 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:39:48,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:39:48,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:39:48,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:39:48,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:39:48,987 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:39:48,988 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:39:48,990 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:39:48,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:39:48,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:39:48,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:39:48,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:39:48,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:39:48,994 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:39:48,995 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:39:48,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:39:48,996 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:39:48,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:39:48,997 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:39:48,997 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:39:48,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:39:48,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:39:48,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:39:49,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:39:49,028 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:39:49,029 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:39:49,029 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:39:49,031 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:39:49,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:39:49,032 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:39:49,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:39:49,035 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:39:49,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:39:49,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:39:49,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:39:49,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:39:49,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:39:49,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:39:49,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:39:49,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:39:49,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:39:49,039 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:39:49,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:39:49,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:39:49,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:39:49,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:39:49,040 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:39:49,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:39:49,041 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:39:49,041 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:39:49,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:39:49,041 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:39:49,043 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:39:49,043 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:39:49,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:39:49,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:39:49,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:39:49,133 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:39:49,134 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:39:49,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-11-07 09:39:49,197 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1fe4811/079c381f6ef049508eae42b5136e5f99/FLAGa357a6e21 [2018-11-07 09:39:49,919 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:39:49,920 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-11-07 09:39:49,948 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1fe4811/079c381f6ef049508eae42b5136e5f99/FLAGa357a6e21 [2018-11-07 09:39:49,966 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1fe4811/079c381f6ef049508eae42b5136e5f99 [2018-11-07 09:39:49,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:39:49,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:39:49,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:39:49,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:39:49,987 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:39:49,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:39:49" (1/1) ... [2018-11-07 09:39:49,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ab8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:49, skipping insertion in model container [2018-11-07 09:39:49,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:39:49" (1/1) ... [2018-11-07 09:39:50,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:39:50,165 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:39:51,345 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:39:51,350 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:39:51,912 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:39:51,944 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:39:51,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51 WrapperNode [2018-11-07 09:39:51,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:39:51,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:39:51,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:39:51,947 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:39:51,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:39:52,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:39:52,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:39:52,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:39:52,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (1/1) ... [2018-11-07 09:39:52,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:39:52,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:39:52,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:39:52,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:39:52,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (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 09:39:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:39:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:39:52,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:39:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:39:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:39:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:39:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:39:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:39:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:39:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:39:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:39:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:39:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:40:01,079 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:40:01,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:40:01 BoogieIcfgContainer [2018-11-07 09:40:01,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:40:01,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:40:01,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:40:01,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:40:01,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:39:49" (1/3) ... [2018-11-07 09:40:01,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ed8517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:40:01, skipping insertion in model container [2018-11-07 09:40:01,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:51" (2/3) ... [2018-11-07 09:40:01,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ed8517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:40:01, skipping insertion in model container [2018-11-07 09:40:01,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:40:01" (3/3) ... [2018-11-07 09:40:01,089 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label46_true-unreach-call.c [2018-11-07 09:40:01,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:40:01,111 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:40:01,131 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:40:01,179 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:40:01,179 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:40:01,179 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:40:01,180 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:40:01,180 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:40:01,180 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:40:01,180 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:40:01,180 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:40:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:40:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 09:40:01,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:01,231 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] [2018-11-07 09:40:01,234 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:01,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:01,242 INFO L82 PathProgramCache]: Analyzing trace with hash -121741353, now seen corresponding path program 1 times [2018-11-07 09:40:01,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:01,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:01,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:01,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:01,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:01,823 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 09:40:01,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:40:01,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:40:01,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:01,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:40:01,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:40:01,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:40:01,855 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:40:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:09,543 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:40:09,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:40:09,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-11-07 09:40:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:09,596 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:40:09,596 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:40:09,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:40:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:40:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:40:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:40:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 09:40:09,782 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 43 [2018-11-07 09:40:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:09,785 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 09:40:09,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:40:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 09:40:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 09:40:09,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:09,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:09,799 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:09,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1147726576, now seen corresponding path program 1 times [2018-11-07 09:40:09,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:09,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:09,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:09,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:09,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:40:10,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:40:10,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:40:10,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:10,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:40:10,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:40:10,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:40:10,169 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 09:40:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:21,152 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 09:40:21,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:40:21,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-07 09:40:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:21,198 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 09:40:21,198 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 09:40:21,209 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:40:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 09:40:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 09:40:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 09:40:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 09:40:21,342 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 117 [2018-11-07 09:40:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:21,342 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 09:40:21,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:40:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 09:40:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 09:40:21,347 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:21,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:21,347 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:21,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash 562465401, now seen corresponding path program 1 times [2018-11-07 09:40:21,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:21,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:21,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:21,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:21,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:40:21,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:40:21,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:40:21,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:21,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:40:21,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:40:21,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:40:21,553 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-11-07 09:40:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:31,765 INFO L93 Difference]: Finished difference Result 14334 states and 23466 transitions. [2018-11-07 09:40:31,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:40:31,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 09:40:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:31,828 INFO L225 Difference]: With dead ends: 14334 [2018-11-07 09:40:31,828 INFO L226 Difference]: Without dead ends: 10045 [2018-11-07 09:40:31,848 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 09:40:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2018-11-07 09:40:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9941. [2018-11-07 09:40:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2018-11-07 09:40:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 14577 transitions. [2018-11-07 09:40:32,153 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 14577 transitions. Word has length 120 [2018-11-07 09:40:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:32,158 INFO L480 AbstractCegarLoop]: Abstraction has 9941 states and 14577 transitions. [2018-11-07 09:40:32,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:40:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 14577 transitions. [2018-11-07 09:40:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 09:40:32,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:32,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:32,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:32,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:32,172 INFO L82 PathProgramCache]: Analyzing trace with hash -534758187, now seen corresponding path program 1 times [2018-11-07 09:40:32,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:32,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:32,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:32,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:32,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:40:32,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:40:32,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:40:32,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:32,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:40:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:40:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:40:32,403 INFO L87 Difference]: Start difference. First operand 9941 states and 14577 transitions. Second operand 4 states. [2018-11-07 09:40:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:40,116 INFO L93 Difference]: Finished difference Result 29911 states and 46757 transitions. [2018-11-07 09:40:40,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:40:40,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-11-07 09:40:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:40,196 INFO L225 Difference]: With dead ends: 29911 [2018-11-07 09:40:40,196 INFO L226 Difference]: Without dead ends: 19976 [2018-11-07 09:40:40,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:40:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19976 states. [2018-11-07 09:40:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19976 to 19973. [2018-11-07 09:40:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19973 states. [2018-11-07 09:40:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19973 states to 19973 states and 29037 transitions. [2018-11-07 09:40:40,762 INFO L78 Accepts]: Start accepts. Automaton has 19973 states and 29037 transitions. Word has length 150 [2018-11-07 09:40:40,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:40,763 INFO L480 AbstractCegarLoop]: Abstraction has 19973 states and 29037 transitions. [2018-11-07 09:40:40,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:40:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19973 states and 29037 transitions. [2018-11-07 09:40:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 09:40:40,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:40,772 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:40:40,773 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:40,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash 307186760, now seen corresponding path program 1 times [2018-11-07 09:40:40,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:40,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:40,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:40,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:40,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:41,021 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:40:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 72 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:40:41,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:40:41,262 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:40:41,263 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-11-07 09:40:41,267 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:40:41,323 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:40:41,324 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:40:41,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:40:41,729 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:40:41,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:41,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:40:42,205 INFO L227 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-07 09:40:42,205 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:40:42,442 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-11-07 09:40:42,442 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:40:42,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:40:42,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 09:40:42,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:42,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:40:42,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:40:42,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:40:42,445 INFO L87 Difference]: Start difference. First operand 19973 states and 29037 transitions. Second operand 6 states. [2018-11-07 09:42:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:44,571 INFO L93 Difference]: Finished difference Result 40645 states and 58989 transitions. [2018-11-07 09:42:44,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:42:44,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-11-07 09:42:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:44,634 INFO L225 Difference]: With dead ends: 40645 [2018-11-07 09:42:44,635 INFO L226 Difference]: Without dead ends: 20678 [2018-11-07 09:42:44,668 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:42:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20678 states. [2018-11-07 09:42:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20678 to 20676. [2018-11-07 09:42:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20676 states. [2018-11-07 09:42:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20676 states to 20676 states and 29749 transitions. [2018-11-07 09:42:45,133 INFO L78 Accepts]: Start accepts. Automaton has 20676 states and 29749 transitions. Word has length 190 [2018-11-07 09:42:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:45,134 INFO L480 AbstractCegarLoop]: Abstraction has 20676 states and 29749 transitions. [2018-11-07 09:42:45,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:42:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20676 states and 29749 transitions. [2018-11-07 09:42:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-07 09:42:45,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:45,144 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:45,145 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:45,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 419013354, now seen corresponding path program 1 times [2018-11-07 09:42:45,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:45,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:45,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:45,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:45,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:45,722 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:42:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 167 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:42:46,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:42:46,217 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:42:46,217 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-07 09:42:46,218 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:42:46,227 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:42:46,227 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:42:46,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:42:46,482 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:42:46,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:46,511 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:42:46,898 INFO L227 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 09:42:46,899 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:42:47,345 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-07 09:42:47,345 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:42:47,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:42:47,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:42:47,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:42:47,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:42:47,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:42:47,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:42:47,347 INFO L87 Difference]: Start difference. First operand 20676 states and 29749 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown