java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:03,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:03,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:03,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:03,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:03,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:03,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:03,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:03,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:03,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:03,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:03,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:03,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:03,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:03,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:03,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:03,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:03,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:03,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:03,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:03,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:03,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:03,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:03,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:03,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:45:03,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:45:03,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:45:03,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:45:03,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:45:03,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:45:03,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:03,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:03,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:03,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:03,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:03,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:03,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:03,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:03,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:03,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:03,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:03,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:45:03,976 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:03,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:03,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:03,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:03,982 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:03,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:03,983 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:03,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:03,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:03,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:03,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:03,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:03,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:03,984 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:03,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:03,985 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:03,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:03,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:03,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:03,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:03,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:03,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:03,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:03,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:03,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:03,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:03,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:03,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:03,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:04,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:04,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:04,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:04,296 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:04,296 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:04,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:04,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73c75a5b/d0deacd0be454aea95df077b62659336/FLAG9dfa18138 [2019-10-13 19:45:04,895 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:04,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:04,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73c75a5b/d0deacd0be454aea95df077b62659336/FLAG9dfa18138 [2019-10-13 19:45:05,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73c75a5b/d0deacd0be454aea95df077b62659336 [2019-10-13 19:45:05,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:05,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:05,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:05,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:05,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:05,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:05" (1/1) ... [2019-10-13 19:45:05,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb305d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:05, skipping insertion in model container [2019-10-13 19:45:05,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:05" (1/1) ... [2019-10-13 19:45:05,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:05,296 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:05,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:05,908 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:06,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:06,109 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:06,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06 WrapperNode [2019-10-13 19:45:06,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:06,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:06,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:06,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:06,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... [2019-10-13 19:45:06,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:06,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:06,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:06,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:06,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:06,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:06,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:06,349 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:07,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:07,910 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:07,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:07 BoogieIcfgContainer [2019-10-13 19:45:07,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:07,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:07,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:07,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:07,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:05" (1/3) ... [2019-10-13 19:45:07,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:07, skipping insertion in model container [2019-10-13 19:45:07,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:06" (2/3) ... [2019-10-13 19:45:07,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:07, skipping insertion in model container [2019-10-13 19:45:07,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:07" (3/3) ... [2019-10-13 19:45:07,926 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:07,936 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:07,958 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:45:07,970 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:45:08,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:08,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:08,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:08,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:08,017 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:08,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:08,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:08,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2019-10-13 19:45:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:45:08,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:08,084 INFO L380 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] [2019-10-13 19:45:08,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:08,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:08,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1850165601, now seen corresponding path program 1 times [2019-10-13 19:45:08,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:08,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924145216] [2019-10-13 19:45:08,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:08,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:08,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:09,102 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:09,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924145216] [2019-10-13 19:45:09,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:09,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:09,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606308882] [2019-10-13 19:45:09,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:09,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:09,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:09,213 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2019-10-13 19:45:09,540 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-13 19:45:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:11,117 INFO L93 Difference]: Finished difference Result 605 states and 1058 transitions. [2019-10-13 19:45:11,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:11,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-13 19:45:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:11,139 INFO L225 Difference]: With dead ends: 605 [2019-10-13 19:45:11,139 INFO L226 Difference]: Without dead ends: 493 [2019-10-13 19:45:11,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-13 19:45:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2019-10-13 19:45:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 19:45:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 730 transitions. [2019-10-13 19:45:11,234 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 730 transitions. Word has length 148 [2019-10-13 19:45:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:11,235 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 730 transitions. [2019-10-13 19:45:11,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 730 transitions. [2019-10-13 19:45:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:45:11,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:11,240 INFO L380 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] [2019-10-13 19:45:11,241 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash -835560269, now seen corresponding path program 1 times [2019-10-13 19:45:11,241 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:11,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444298407] [2019-10-13 19:45:11,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:11,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:11,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,834 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:11,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444298407] [2019-10-13 19:45:11,883 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:11,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:11,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224693621] [2019-10-13 19:45:11,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:11,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:11,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:11,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:11,887 INFO L87 Difference]: Start difference. First operand 491 states and 730 transitions. Second operand 5 states. [2019-10-13 19:45:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:14,049 INFO L93 Difference]: Finished difference Result 1423 states and 2113 transitions. [2019-10-13 19:45:14,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:14,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 19:45:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:14,057 INFO L225 Difference]: With dead ends: 1423 [2019-10-13 19:45:14,057 INFO L226 Difference]: Without dead ends: 945 [2019-10-13 19:45:14,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-13 19:45:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2019-10-13 19:45:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-13 19:45:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1389 transitions. [2019-10-13 19:45:14,128 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1389 transitions. Word has length 148 [2019-10-13 19:45:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:14,129 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1389 transitions. [2019-10-13 19:45:14,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1389 transitions. [2019-10-13 19:45:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:45:14,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:14,134 INFO L380 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] [2019-10-13 19:45:14,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash -312485947, now seen corresponding path program 1 times [2019-10-13 19:45:14,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:14,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133724103] [2019-10-13 19:45:14,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:14,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:14,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:14,377 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:14,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133724103] [2019-10-13 19:45:14,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:14,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:14,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562462799] [2019-10-13 19:45:14,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:14,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:14,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:14,409 INFO L87 Difference]: Start difference. First operand 943 states and 1389 transitions. Second operand 4 states. [2019-10-13 19:45:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:15,948 INFO L93 Difference]: Finished difference Result 2783 states and 4097 transitions. [2019-10-13 19:45:15,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:15,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:45:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:15,963 INFO L225 Difference]: With dead ends: 2783 [2019-10-13 19:45:15,963 INFO L226 Difference]: Without dead ends: 1872 [2019-10-13 19:45:15,966 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2019-10-13 19:45:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 945. [2019-10-13 19:45:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-13 19:45:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1391 transitions. [2019-10-13 19:45:16,033 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1391 transitions. Word has length 149 [2019-10-13 19:45:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:16,033 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1391 transitions. [2019-10-13 19:45:16,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1391 transitions. [2019-10-13 19:45:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:16,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:16,037 INFO L380 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] [2019-10-13 19:45:16,038 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1358823732, now seen corresponding path program 1 times [2019-10-13 19:45:16,038 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:16,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081730551] [2019-10-13 19:45:16,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:16,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:16,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:16,496 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:16,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081730551] [2019-10-13 19:45:16,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:16,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:16,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548942761] [2019-10-13 19:45:16,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:16,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:16,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:16,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:16,572 INFO L87 Difference]: Start difference. First operand 945 states and 1391 transitions. Second operand 5 states. [2019-10-13 19:45:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:17,904 INFO L93 Difference]: Finished difference Result 1876 states and 2764 transitions. [2019-10-13 19:45:17,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:17,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 19:45:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:17,910 INFO L225 Difference]: With dead ends: 1876 [2019-10-13 19:45:17,911 INFO L226 Difference]: Without dead ends: 943 [2019-10-13 19:45:17,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2019-10-13 19:45:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2019-10-13 19:45:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-13 19:45:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1387 transitions. [2019-10-13 19:45:17,957 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1387 transitions. Word has length 150 [2019-10-13 19:45:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:17,958 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1387 transitions. [2019-10-13 19:45:17,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1387 transitions. [2019-10-13 19:45:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:17,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:17,961 INFO L380 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] [2019-10-13 19:45:17,961 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1528940934, now seen corresponding path program 1 times [2019-10-13 19:45:17,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:17,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332853662] [2019-10-13 19:45:17,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:17,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:17,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:18,242 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:18,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332853662] [2019-10-13 19:45:18,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:18,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:18,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661684158] [2019-10-13 19:45:18,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:18,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:18,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:18,283 INFO L87 Difference]: Start difference. First operand 943 states and 1387 transitions. Second operand 4 states. [2019-10-13 19:45:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:20,672 INFO L93 Difference]: Finished difference Result 2159 states and 3193 transitions. [2019-10-13 19:45:20,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:20,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-13 19:45:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:20,680 INFO L225 Difference]: With dead ends: 2159 [2019-10-13 19:45:20,680 INFO L226 Difference]: Without dead ends: 1396 [2019-10-13 19:45:20,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2019-10-13 19:45:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1394. [2019-10-13 19:45:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2019-10-13 19:45:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2025 transitions. [2019-10-13 19:45:20,759 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2025 transitions. Word has length 150 [2019-10-13 19:45:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:20,760 INFO L462 AbstractCegarLoop]: Abstraction has 1394 states and 2025 transitions. [2019-10-13 19:45:20,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2025 transitions. [2019-10-13 19:45:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:45:20,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:20,764 INFO L380 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] [2019-10-13 19:45:20,764 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2049235060, now seen corresponding path program 1 times [2019-10-13 19:45:20,765 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:20,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036867397] [2019-10-13 19:45:20,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,078 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:21,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036867397] [2019-10-13 19:45:21,131 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:21,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:21,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589668958] [2019-10-13 19:45:21,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:21,137 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:21,146 INFO L87 Difference]: Start difference. First operand 1394 states and 2025 transitions. Second operand 4 states. [2019-10-13 19:45:21,384 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-13 19:45:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:22,902 INFO L93 Difference]: Finished difference Result 3707 states and 5443 transitions. [2019-10-13 19:45:22,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:22,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-10-13 19:45:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:22,916 INFO L225 Difference]: With dead ends: 3707 [2019-10-13 19:45:22,917 INFO L226 Difference]: Without dead ends: 2595 [2019-10-13 19:45:22,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-13 19:45:23,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2593. [2019-10-13 19:45:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2019-10-13 19:45:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3764 transitions. [2019-10-13 19:45:23,059 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3764 transitions. Word has length 156 [2019-10-13 19:45:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:23,061 INFO L462 AbstractCegarLoop]: Abstraction has 2593 states and 3764 transitions. [2019-10-13 19:45:23,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3764 transitions. [2019-10-13 19:45:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:45:23,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:23,067 INFO L380 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] [2019-10-13 19:45:23,068 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:23,068 INFO L82 PathProgramCache]: Analyzing trace with hash 327258095, now seen corresponding path program 1 times [2019-10-13 19:45:23,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:23,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922064877] [2019-10-13 19:45:23,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:23,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:23,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:23,516 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:23,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922064877] [2019-10-13 19:45:23,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:23,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:45:23,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704959669] [2019-10-13 19:45:23,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:23,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:23,569 INFO L87 Difference]: Start difference. First operand 2593 states and 3764 transitions. Second operand 7 states. [2019-10-13 19:45:23,806 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-10-13 19:45:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:26,186 INFO L93 Difference]: Finished difference Result 6395 states and 10006 transitions. [2019-10-13 19:45:26,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:45:26,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-13 19:45:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:26,214 INFO L225 Difference]: With dead ends: 6395 [2019-10-13 19:45:26,214 INFO L226 Difference]: Without dead ends: 5489 [2019-10-13 19:45:26,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:45:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2019-10-13 19:45:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5453. [2019-10-13 19:45:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2019-10-13 19:45:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8364 transitions. [2019-10-13 19:45:26,515 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8364 transitions. Word has length 156 [2019-10-13 19:45:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:26,516 INFO L462 AbstractCegarLoop]: Abstraction has 5453 states and 8364 transitions. [2019-10-13 19:45:26,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8364 transitions. [2019-10-13 19:45:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:45:26,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:26,524 INFO L380 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] [2019-10-13 19:45:26,524 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1936499521, now seen corresponding path program 1 times [2019-10-13 19:45:26,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:26,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203947639] [2019-10-13 19:45:26,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:26,961 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:27,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203947639] [2019-10-13 19:45:27,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:27,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:45:27,058 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69348501] [2019-10-13 19:45:27,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:45:27,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:45:27,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:45:27,060 INFO L87 Difference]: Start difference. First operand 5453 states and 8364 transitions. Second operand 9 states. [2019-10-13 19:45:27,295 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-13 19:45:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:29,114 INFO L93 Difference]: Finished difference Result 9061 states and 14264 transitions. [2019-10-13 19:45:29,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:45:29,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2019-10-13 19:45:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:29,140 INFO L225 Difference]: With dead ends: 9061 [2019-10-13 19:45:29,140 INFO L226 Difference]: Without dead ends: 5455 [2019-10-13 19:45:29,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2019-10-13 19:45:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5453. [2019-10-13 19:45:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2019-10-13 19:45:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8328 transitions. [2019-10-13 19:45:29,480 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8328 transitions. Word has length 156 [2019-10-13 19:45:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:29,481 INFO L462 AbstractCegarLoop]: Abstraction has 5453 states and 8328 transitions. [2019-10-13 19:45:29,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:45:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8328 transitions. [2019-10-13 19:45:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:45:29,487 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:29,488 INFO L380 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] [2019-10-13 19:45:29,488 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:29,488 INFO L82 PathProgramCache]: Analyzing trace with hash -681147618, now seen corresponding path program 1 times [2019-10-13 19:45:29,488 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:29,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76983309] [2019-10-13 19:45:29,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:29,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:29,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:29,874 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:29,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76983309] [2019-10-13 19:45:29,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:29,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:29,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530058939] [2019-10-13 19:45:29,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:29,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:29,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:29,923 INFO L87 Difference]: Start difference. First operand 5453 states and 8328 transitions. Second operand 5 states. [2019-10-13 19:45:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:32,216 INFO L93 Difference]: Finished difference Result 14216 states and 21721 transitions. [2019-10-13 19:45:32,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:32,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-13 19:45:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:32,255 INFO L225 Difference]: With dead ends: 14216 [2019-10-13 19:45:32,255 INFO L226 Difference]: Without dead ends: 8786 [2019-10-13 19:45:32,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2019-10-13 19:45:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8784. [2019-10-13 19:45:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8784 states. [2019-10-13 19:45:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 13279 transitions. [2019-10-13 19:45:32,691 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 13279 transitions. Word has length 156 [2019-10-13 19:45:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:32,692 INFO L462 AbstractCegarLoop]: Abstraction has 8784 states and 13279 transitions. [2019-10-13 19:45:32,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 13279 transitions. [2019-10-13 19:45:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:32,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:32,701 INFO L380 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] [2019-10-13 19:45:32,701 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:32,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1122789079, now seen corresponding path program 1 times [2019-10-13 19:45:32,702 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:32,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941373363] [2019-10-13 19:45:32,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:32,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:32,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:33,050 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:33,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941373363] [2019-10-13 19:45:33,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:33,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:33,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338825433] [2019-10-13 19:45:33,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:33,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:33,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:33,092 INFO L87 Difference]: Start difference. First operand 8784 states and 13279 transitions. Second operand 4 states. [2019-10-13 19:45:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:35,664 INFO L93 Difference]: Finished difference Result 25169 states and 38128 transitions. [2019-10-13 19:45:35,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:35,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-13 19:45:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:35,702 INFO L225 Difference]: With dead ends: 25169 [2019-10-13 19:45:35,703 INFO L226 Difference]: Without dead ends: 16843 [2019-10-13 19:45:35,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:35,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16843 states. [2019-10-13 19:45:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16843 to 16841. [2019-10-13 19:45:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16841 states. [2019-10-13 19:45:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16841 states to 16841 states and 25210 transitions. [2019-10-13 19:45:36,558 INFO L78 Accepts]: Start accepts. Automaton has 16841 states and 25210 transitions. Word has length 158 [2019-10-13 19:45:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:36,558 INFO L462 AbstractCegarLoop]: Abstraction has 16841 states and 25210 transitions. [2019-10-13 19:45:36,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16841 states and 25210 transitions. [2019-10-13 19:45:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:36,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:36,571 INFO L380 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] [2019-10-13 19:45:36,572 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash 725817844, now seen corresponding path program 1 times [2019-10-13 19:45:36,572 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:36,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679743186] [2019-10-13 19:45:36,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:36,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:36,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:36,942 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-13 19:45:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:36,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679743186] [2019-10-13 19:45:36,977 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:36,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:36,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71282114] [2019-10-13 19:45:36,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:36,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:36,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:36,979 INFO L87 Difference]: Start difference. First operand 16841 states and 25210 transitions. Second operand 5 states.