java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 08:08:07,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 08:08:07,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 08:08:07,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 08:08:07,884 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 08:08:07,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 08:08:07,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 08:08:07,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 08:08:07,893 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 08:08:07,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 08:08:07,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 08:08:07,899 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 08:08:07,900 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 08:08:07,901 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 08:08:07,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 08:08:07,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 08:08:07,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 08:08:07,912 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 08:08:07,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 08:08:07,923 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 08:08:07,924 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 08:08:07,925 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 08:08:07,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 08:08:07,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 08:08:07,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 08:08:07,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 08:08:07,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 08:08:07,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 08:08:07,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 08:08:07,936 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 08:08:07,936 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 08:08:07,936 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 08:08:07,941 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 08:08:07,942 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 08:08:07,943 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 08:08:07,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 08:08:07,944 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 08:08:07,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 08:08:07,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 08:08:07,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 08:08:07,964 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 08:08:07,965 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 08:08:07,965 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 08:08:07,965 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 08:08:07,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 08:08:07,966 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 08:08:07,966 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 08:08:07,966 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 08:08:07,966 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 08:08:07,968 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 08:08:07,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 08:08:07,969 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 08:08:07,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 08:08:07,969 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 08:08:07,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 08:08:07,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 08:08:07,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 08:08:07,970 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 08:08:07,970 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 08:08:07,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 08:08:07,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 08:08:07,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 08:08:07,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 08:08:07,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 08:08:07,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 08:08:07,973 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 08:08:08,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 08:08:08,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 08:08:08,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 08:08:08,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 08:08:08,052 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 08:08:08,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label06_true-unreach-call.c [2018-07-22 08:08:08,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/06356143f/c0f17efb66df45d0b5986c7bdb2b4fd7/FLAGc6dc04d63 [2018-07-22 08:08:09,110 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 08:08:09,111 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label06_true-unreach-call.c [2018-07-22 08:08:09,179 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/06356143f/c0f17efb66df45d0b5986c7bdb2b4fd7/FLAGc6dc04d63 [2018-07-22 08:08:09,199 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/06356143f/c0f17efb66df45d0b5986c7bdb2b4fd7 [2018-07-22 08:08:09,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 08:08:09,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 08:08:09,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 08:08:09,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 08:08:09,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 08:08:09,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:08:09" (1/1) ... [2018-07-22 08:08:09,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcdf00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:09, skipping insertion in model container [2018-07-22 08:08:09,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:08:09" (1/1) ... [2018-07-22 08:08:09,759 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 08:08:11,832 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 08:08:11,853 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 08:08:13,173 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 08:08:13,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13 WrapperNode [2018-07-22 08:08:13,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 08:08:13,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 08:08:13,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 08:08:13,704 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 08:08:13,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:13,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:14,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 08:08:14,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 08:08:14,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 08:08:14,266 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 08:08:14,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:14,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:14,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:14,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:14,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:15,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:15,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... [2018-07-22 08:08:15,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 08:08:15,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 08:08:15,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 08:08:15,968 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 08:08:15,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (1/1) ... No working directory specified, using /storage/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 [2018-07-22 08:08:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 08:08:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 08:08:16,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 08:08:27,850 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 08:08:27,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:08:27 BoogieIcfgContainer [2018-07-22 08:08:27,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 08:08:27,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 08:08:27,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 08:08:27,860 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 08:08:27,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:08:09" (1/3) ... [2018-07-22 08:08:27,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2702eae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:08:27, skipping insertion in model container [2018-07-22 08:08:27,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:08:13" (2/3) ... [2018-07-22 08:08:27,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2702eae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:08:27, skipping insertion in model container [2018-07-22 08:08:27,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:08:27" (3/3) ... [2018-07-22 08:08:27,866 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label06_true-unreach-call.c [2018-07-22 08:08:27,876 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 08:08:27,885 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 08:08:27,944 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 08:08:27,945 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 08:08:27,945 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 08:08:27,945 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 08:08:27,945 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 08:08:27,946 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 08:08:27,946 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 08:08:27,946 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 08:08:27,946 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 08:08:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2018-07-22 08:08:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-07-22 08:08:28,070 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:08:28,072 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:08:28,072 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:08:28,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1156771111, now seen corresponding path program 1 times [2018-07-22 08:08:28,083 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:08:28,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:08:28,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:28,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:08:28,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:08:30,683 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-22 08:08:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 08:08:31,644 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:08:31,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 08:08:31,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 08:08:31,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 08:08:31,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:08:31,664 INFO L87 Difference]: Start difference. First operand 1291 states. Second operand 4 states. [2018-07-22 08:08:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:08:43,682 INFO L93 Difference]: Finished difference Result 4739 states and 8984 transitions. [2018-07-22 08:08:43,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 08:08:43,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 957 [2018-07-22 08:08:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:08:43,742 INFO L225 Difference]: With dead ends: 4739 [2018-07-22 08:08:43,743 INFO L226 Difference]: Without dead ends: 3441 [2018-07-22 08:08:43,754 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:08:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2018-07-22 08:08:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 3407. [2018-07-22 08:08:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2018-07-22 08:08:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 5743 transitions. [2018-07-22 08:08:43,981 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 5743 transitions. Word has length 957 [2018-07-22 08:08:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:08:43,987 INFO L471 AbstractCegarLoop]: Abstraction has 3407 states and 5743 transitions. [2018-07-22 08:08:43,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 08:08:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 5743 transitions. [2018-07-22 08:08:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-07-22 08:08:44,077 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:08:44,079 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:08:44,079 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:08:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash -220868599, now seen corresponding path program 1 times [2018-07-22 08:08:44,080 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:08:44,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:08:44,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:44,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:08:44,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:08:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 08:08:44,962 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:08:44,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 08:08:44,965 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 08:08:44,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 08:08:44,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:08:44,966 INFO L87 Difference]: Start difference. First operand 3407 states and 5743 transitions. Second operand 3 states. [2018-07-22 08:08:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:08:51,586 INFO L93 Difference]: Finished difference Result 9946 states and 16875 transitions. [2018-07-22 08:08:51,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 08:08:51,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 967 [2018-07-22 08:08:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:08:51,620 INFO L225 Difference]: With dead ends: 9946 [2018-07-22 08:08:51,620 INFO L226 Difference]: Without dead ends: 6541 [2018-07-22 08:08:51,626 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:08:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2018-07-22 08:08:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 6526. [2018-07-22 08:08:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6526 states. [2018-07-22 08:08:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6526 states to 6526 states and 10196 transitions. [2018-07-22 08:08:51,818 INFO L78 Accepts]: Start accepts. Automaton has 6526 states and 10196 transitions. Word has length 967 [2018-07-22 08:08:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:08:51,818 INFO L471 AbstractCegarLoop]: Abstraction has 6526 states and 10196 transitions. [2018-07-22 08:08:51,818 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 08:08:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6526 states and 10196 transitions. [2018-07-22 08:08:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2018-07-22 08:08:51,841 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:08:51,842 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:08:51,842 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:08:51,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2070674112, now seen corresponding path program 1 times [2018-07-22 08:08:51,844 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:08:51,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:08:51,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:51,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:08:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:08:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 08:08:52,549 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:08:52,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 08:08:52,551 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 08:08:52,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 08:08:52,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:08:52,552 INFO L87 Difference]: Start difference. First operand 6526 states and 10196 transitions. Second operand 3 states. [2018-07-22 08:08:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:08:56,554 INFO L93 Difference]: Finished difference Result 19119 states and 29988 transitions. [2018-07-22 08:08:56,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 08:08:56,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 972 [2018-07-22 08:08:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:08:56,608 INFO L225 Difference]: With dead ends: 19119 [2018-07-22 08:08:56,609 INFO L226 Difference]: Without dead ends: 12595 [2018-07-22 08:08:56,617 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:08:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12595 states. [2018-07-22 08:08:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12595 to 12565. [2018-07-22 08:08:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12565 states. [2018-07-22 08:08:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12565 states to 12565 states and 18515 transitions. [2018-07-22 08:08:56,873 INFO L78 Accepts]: Start accepts. Automaton has 12565 states and 18515 transitions. Word has length 972 [2018-07-22 08:08:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:08:56,873 INFO L471 AbstractCegarLoop]: Abstraction has 12565 states and 18515 transitions. [2018-07-22 08:08:56,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 08:08:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12565 states and 18515 transitions. [2018-07-22 08:08:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-07-22 08:08:56,910 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:08:56,911 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:08:56,911 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:08:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1466344300, now seen corresponding path program 1 times [2018-07-22 08:08:56,911 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:08:56,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:08:56,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:56,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:08:56,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:08:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:08:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-22 08:08:57,617 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:08:57,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 08:08:57,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 08:08:57,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 08:08:57,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:08:57,620 INFO L87 Difference]: Start difference. First operand 12565 states and 18515 transitions. Second operand 3 states. [2018-07-22 08:09:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:02,539 INFO L93 Difference]: Finished difference Result 37153 states and 54850 transitions. [2018-07-22 08:09:02,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 08:09:02,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 976 [2018-07-22 08:09:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:02,615 INFO L225 Difference]: With dead ends: 37153 [2018-07-22 08:09:02,615 INFO L226 Difference]: Without dead ends: 24590 [2018-07-22 08:09:02,633 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:09:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24590 states. [2018-07-22 08:09:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24590 to 24560. [2018-07-22 08:09:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24560 states. [2018-07-22 08:09:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24560 states to 24560 states and 33748 transitions. [2018-07-22 08:09:03,026 INFO L78 Accepts]: Start accepts. Automaton has 24560 states and 33748 transitions. Word has length 976 [2018-07-22 08:09:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:09:03,027 INFO L471 AbstractCegarLoop]: Abstraction has 24560 states and 33748 transitions. [2018-07-22 08:09:03,027 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 08:09:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 24560 states and 33748 transitions. [2018-07-22 08:09:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-07-22 08:09:03,077 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:09:03,078 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:09:03,078 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:09:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1719063669, now seen corresponding path program 1 times [2018-07-22 08:09:03,079 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:09:03,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:09:03,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:03,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:09:03,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:09:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-22 08:09:03,937 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:09:03,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 08:09:03,938 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 08:09:03,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 08:09:03,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:03,939 INFO L87 Difference]: Start difference. First operand 24560 states and 33748 transitions. Second operand 4 states. [2018-07-22 08:09:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:12,271 INFO L93 Difference]: Finished difference Result 96985 states and 133375 transitions. [2018-07-22 08:09:12,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 08:09:12,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 980 [2018-07-22 08:09:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:12,377 INFO L225 Difference]: With dead ends: 96985 [2018-07-22 08:09:12,378 INFO L226 Difference]: Without dead ends: 72427 [2018-07-22 08:09:12,413 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72427 states. [2018-07-22 08:09:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72427 to 72345. [2018-07-22 08:09:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72345 states. [2018-07-22 08:09:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72345 states to 72345 states and 93771 transitions. [2018-07-22 08:09:13,317 INFO L78 Accepts]: Start accepts. Automaton has 72345 states and 93771 transitions. Word has length 980 [2018-07-22 08:09:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:09:13,318 INFO L471 AbstractCegarLoop]: Abstraction has 72345 states and 93771 transitions. [2018-07-22 08:09:13,318 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 08:09:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 72345 states and 93771 transitions. [2018-07-22 08:09:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2018-07-22 08:09:13,416 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:09:13,416 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:09:13,418 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:09:13,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1774358184, now seen corresponding path program 1 times [2018-07-22 08:09:13,418 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:09:13,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:09:13,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:13,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:09:13,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:09:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-22 08:09:14,635 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:09:14,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 08:09:14,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 08:09:14,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 08:09:14,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:09:14,637 INFO L87 Difference]: Start difference. First operand 72345 states and 93771 transitions. Second operand 3 states. [2018-07-22 08:09:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:17,469 INFO L93 Difference]: Finished difference Result 180938 states and 237102 transitions. [2018-07-22 08:09:17,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 08:09:17,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1045 [2018-07-22 08:09:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:17,604 INFO L225 Difference]: With dead ends: 180938 [2018-07-22 08:09:17,604 INFO L226 Difference]: Without dead ends: 108595 [2018-07-22 08:09:17,647 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 08:09:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108595 states. [2018-07-22 08:09:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108595 to 108586. [2018-07-22 08:09:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108586 states. [2018-07-22 08:09:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108586 states to 108586 states and 143218 transitions. [2018-07-22 08:09:18,735 INFO L78 Accepts]: Start accepts. Automaton has 108586 states and 143218 transitions. Word has length 1045 [2018-07-22 08:09:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:09:18,735 INFO L471 AbstractCegarLoop]: Abstraction has 108586 states and 143218 transitions. [2018-07-22 08:09:18,735 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 08:09:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 108586 states and 143218 transitions. [2018-07-22 08:09:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2018-07-22 08:09:18,833 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:09:18,834 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:09:18,834 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:09:18,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1802848022, now seen corresponding path program 1 times [2018-07-22 08:09:18,835 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:09:18,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:09:18,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:18,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:09:18,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:09:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-22 08:09:20,356 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:09:20,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 08:09:20,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 08:09:20,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 08:09:20,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:20,358 INFO L87 Difference]: Start difference. First operand 108586 states and 143218 transitions. Second operand 4 states. [2018-07-22 08:09:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:26,178 INFO L93 Difference]: Finished difference Result 217235 states and 286560 transitions. [2018-07-22 08:09:26,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 08:09:26,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1063 [2018-07-22 08:09:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:26,316 INFO L225 Difference]: With dead ends: 217235 [2018-07-22 08:09:26,316 INFO L226 Difference]: Without dead ends: 108651 [2018-07-22 08:09:26,383 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:26,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108651 states. [2018-07-22 08:09:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108651 to 108585. [2018-07-22 08:09:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108585 states. [2018-07-22 08:09:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108585 states to 108585 states and 135793 transitions. [2018-07-22 08:09:30,791 INFO L78 Accepts]: Start accepts. Automaton has 108585 states and 135793 transitions. Word has length 1063 [2018-07-22 08:09:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:09:30,792 INFO L471 AbstractCegarLoop]: Abstraction has 108585 states and 135793 transitions. [2018-07-22 08:09:30,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 08:09:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 108585 states and 135793 transitions. [2018-07-22 08:09:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2018-07-22 08:09:30,868 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:09:30,869 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:09:30,869 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:09:30,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1503980919, now seen corresponding path program 1 times [2018-07-22 08:09:30,870 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:09:30,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:09:30,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:30,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:09:30,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:09:31,519 WARN L169 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-22 08:09:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-22 08:09:32,485 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:09:32,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 08:09:32,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 08:09:32,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 08:09:32,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:32,487 INFO L87 Difference]: Start difference. First operand 108585 states and 135793 transitions. Second operand 4 states. [2018-07-22 08:09:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:40,080 INFO L93 Difference]: Finished difference Result 325330 states and 399510 transitions. [2018-07-22 08:09:40,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 08:09:40,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1067 [2018-07-22 08:09:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:40,363 INFO L225 Difference]: With dead ends: 325330 [2018-07-22 08:09:40,363 INFO L226 Difference]: Without dead ends: 216747 [2018-07-22 08:09:40,436 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216747 states. [2018-07-22 08:09:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216747 to 162622. [2018-07-22 08:09:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162622 states. [2018-07-22 08:09:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162622 states to 162622 states and 199466 transitions. [2018-07-22 08:09:42,607 INFO L78 Accepts]: Start accepts. Automaton has 162622 states and 199466 transitions. Word has length 1067 [2018-07-22 08:09:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:09:42,607 INFO L471 AbstractCegarLoop]: Abstraction has 162622 states and 199466 transitions. [2018-07-22 08:09:42,607 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 08:09:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 162622 states and 199466 transitions. [2018-07-22 08:09:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2018-07-22 08:09:42,725 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:09:42,726 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:09:42,726 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:09:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1499161712, now seen corresponding path program 1 times [2018-07-22 08:09:42,726 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:09:42,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:09:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:42,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:09:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:09:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:09:43,662 WARN L169 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-07-22 08:09:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 08:09:45,411 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:09:45,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 08:09:45,412 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 08:09:45,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 08:09:45,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:45,412 INFO L87 Difference]: Start difference. First operand 162622 states and 199466 transitions. Second operand 4 states. [2018-07-22 08:09:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:09:58,766 INFO L93 Difference]: Finished difference Result 641828 states and 787409 transitions. [2018-07-22 08:09:58,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 08:09:58,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1081 [2018-07-22 08:09:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:09:59,380 INFO L225 Difference]: With dead ends: 641828 [2018-07-22 08:09:59,380 INFO L226 Difference]: Without dead ends: 479208 [2018-07-22 08:09:59,465 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 08:09:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479208 states. [2018-07-22 08:10:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479208 to 478883. [2018-07-22 08:10:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478883 states. [2018-07-22 08:10:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478883 states to 478883 states and 566686 transitions. [2018-07-22 08:10:12,066 INFO L78 Accepts]: Start accepts. Automaton has 478883 states and 566686 transitions. Word has length 1081 [2018-07-22 08:10:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:10:12,066 INFO L471 AbstractCegarLoop]: Abstraction has 478883 states and 566686 transitions. [2018-07-22 08:10:12,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 08:10:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 478883 states and 566686 transitions. [2018-07-22 08:10:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2018-07-22 08:10:12,389 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:10:12,390 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:10:12,390 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:10:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2099634151, now seen corresponding path program 1 times [2018-07-22 08:10:12,390 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:10:12,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:10:12,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:10:12,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:10:12,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:10:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:10:12,878 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-22 08:10:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 242 proven. 9 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-22 08:10:19,112 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 08:10:19,113 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 08:10:19,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:10:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:10:19,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 08:10:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-22 08:10:20,326 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 08:10:20,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 08:10:20,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 08:10:20,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 08:10:20,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 08:10:20,330 INFO L87 Difference]: Start difference. First operand 478883 states and 566686 transitions. Second operand 5 states. [2018-07-22 08:10:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 08:10:32,401 INFO L93 Difference]: Finished difference Result 957077 states and 1132807 transitions. [2018-07-22 08:10:32,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 08:10:32,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1112 [2018-07-22 08:10:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 08:10:33,162 INFO L225 Difference]: With dead ends: 957077 [2018-07-22 08:10:33,162 INFO L226 Difference]: Without dead ends: 478196 [2018-07-22 08:10:33,277 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1112 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 08:10:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478196 states. [2018-07-22 08:10:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478196 to 477887. [2018-07-22 08:10:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477887 states. [2018-07-22 08:10:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477887 states to 477887 states and 534647 transitions. [2018-07-22 08:10:51,808 INFO L78 Accepts]: Start accepts. Automaton has 477887 states and 534647 transitions. Word has length 1112 [2018-07-22 08:10:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 08:10:51,808 INFO L471 AbstractCegarLoop]: Abstraction has 477887 states and 534647 transitions. [2018-07-22 08:10:51,808 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 08:10:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 477887 states and 534647 transitions. [2018-07-22 08:10:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2018-07-22 08:10:52,242 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 08:10:52,243 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 08:10:52,243 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 08:10:52,243 INFO L82 PathProgramCache]: Analyzing trace with hash 924832020, now seen corresponding path program 1 times [2018-07-22 08:10:52,243 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 08:10:52,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 08:10:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:10:52,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 08:10:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 08:10:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 08:10:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-22 08:10:54,875 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 08:10:54,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 08:10:54,877 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 08:10:54,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 08:10:54,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 08:10:54,877 INFO L87 Difference]: Start difference. First operand 477887 states and 534647 transitions. Second operand 5 states. Received shutdown request... [2018-07-22 08:11:20,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 08:11:20,900 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 08:11:20,905 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 08:11:20,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:11:20 BoogieIcfgContainer [2018-07-22 08:11:20,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 08:11:20,907 INFO L168 Benchmark]: Toolchain (without parser) took 191695.59 ms. Allocated memory was 308.8 MB in the beginning and 4.0 GB in the end (delta: 3.7 GB). Free memory was 227.0 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,908 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 08:11:20,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4481.23 ms. Allocated memory was 308.8 MB in the beginning and 406.3 MB in the end (delta: 97.5 MB). Free memory was 227.0 MB in the beginning and 272.1 MB in the end (delta: -45.1 MB). Peak memory consumption was 225.2 MB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 561.22 ms. Allocated memory is still 406.3 MB. Free memory was 272.1 MB in the beginning and 199.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,909 INFO L168 Benchmark]: Boogie Preprocessor took 1700.76 ms. Allocated memory was 406.3 MB in the beginning and 667.9 MB in the end (delta: 261.6 MB). Free memory was 199.7 MB in the beginning and 527.7 MB in the end (delta: -328.0 MB). Peak memory consumption was 96.2 MB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,910 INFO L168 Benchmark]: RCFGBuilder took 11884.12 ms. Allocated memory was 667.9 MB in the beginning and 930.6 MB in the end (delta: 262.7 MB). Free memory was 527.7 MB in the beginning and 490.3 MB in the end (delta: 37.4 MB). Peak memory consumption was 430.2 MB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,910 INFO L168 Benchmark]: TraceAbstraction took 173054.35 ms. Allocated memory was 930.6 MB in the beginning and 4.0 GB in the end (delta: 3.1 GB). Free memory was 490.3 MB in the beginning and 2.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.3 GB. Max. memory is 5.3 GB. [2018-07-22 08:11:20,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 4481.23 ms. Allocated memory was 308.8 MB in the beginning and 406.3 MB in the end (delta: 97.5 MB). Free memory was 227.0 MB in the beginning and 272.1 MB in the end (delta: -45.1 MB). Peak memory consumption was 225.2 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 561.22 ms. Allocated memory is still 406.3 MB. Free memory was 272.1 MB in the beginning and 199.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1700.76 ms. Allocated memory was 406.3 MB in the beginning and 667.9 MB in the end (delta: 261.6 MB). Free memory was 199.7 MB in the beginning and 527.7 MB in the end (delta: -328.0 MB). Peak memory consumption was 96.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 11884.12 ms. Allocated memory was 667.9 MB in the beginning and 930.6 MB in the end (delta: 262.7 MB). Free memory was 527.7 MB in the beginning and 490.3 MB in the end (delta: 37.4 MB). Peak memory consumption was 430.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 173054.35 ms. Allocated memory was 930.6 MB in the beginning and 4.0 GB in the end (delta: 3.1 GB). Free memory was 490.3 MB in the beginning and 2.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.3 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9360]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9360). Cancelled while BasicCegarLoop was constructing difference of abstraction (477887states) and interpolant automaton (currently 5 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (1730719 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1291 locations, 1 error locations. TIMEOUT Result, 172.9s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 106.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14160 SDtfs, 28267 SDslu, 6761 SDs, 0 SdLazy, 56273 SolverSat, 12527 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1149 GetRequests, 1123 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=478883occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 40.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 55025 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 12446 NumberOfCodeBlocks, 12446 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 12434 ConstructedInterpolants, 0 QuantifiedInterpolants, 17219839 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1458 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 1742/1751 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem06_label06_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_08-11-20-929.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem06_label06_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_08-11-20-929.csv Completed graceful shutdown