/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:10:53,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:10:53,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:10:53,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:10:53,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:10:53,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:10:53,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:10:53,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:10:53,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:10:53,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:10:53,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:10:53,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:10:53,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:10:53,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:10:53,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:10:53,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:10:53,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:10:53,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:10:53,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:10:53,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:10:53,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:10:53,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:10:53,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:10:53,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:10:53,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:10:53,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:10:53,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:10:53,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:10:53,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:10:53,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:10:53,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:10:53,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:10:53,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:10:53,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:10:53,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:10:54,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:10:54,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:10:54,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:10:54,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:10:54,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:10:54,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:10:54,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:10:54,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:10:54,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:10:54,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:10:54,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:10:54,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:10:54,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:10:54,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:10:54,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:10:54,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:10:54,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:10:54,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:10:54,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:10:54,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:10:54,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:10:54,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:10:54,023 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:10:54,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:10:54,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:10:54,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:10:54,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:10:54,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:10:54,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:10:54,025 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:10:54,025 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:10:54,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:10:54,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:10:54,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:10:54,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:10:54,439 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:10:54,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2021-02-24 04:10:54,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d98766f4/f9ee9ee77c404d5bb26d50819aaddc81/FLAGcb828970c [2021-02-24 04:10:55,168 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:10:55,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2021-02-24 04:10:55,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d98766f4/f9ee9ee77c404d5bb26d50819aaddc81/FLAGcb828970c [2021-02-24 04:10:55,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d98766f4/f9ee9ee77c404d5bb26d50819aaddc81 [2021-02-24 04:10:55,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:10:55,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:10:55,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:10:55,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:10:55,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:10:55,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198eef87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55, skipping insertion in model container [2021-02-24 04:10:55,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:10:55,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:10:55,848 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-02-24 04:10:55,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:10:55,864 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:10:55,882 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-02-24 04:10:55,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:10:55,900 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:10:55,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55 WrapperNode [2021-02-24 04:10:55,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:10:55,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:10:55,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:10:55,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:10:55,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (1/1) ... [2021-02-24 04:10:55,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:10:55,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:10:55,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:10:55,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:10:55,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (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 [2021-02-24 04:10:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:10:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:10:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:10:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-02-24 04:10:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-02-24 04:10:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:10:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:10:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:10:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:10:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:10:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:10:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-02-24 04:10:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-02-24 04:10:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:10:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:10:56,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:10:56,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:10:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:10:56,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:10:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:10:56,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:10:56,454 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:10:56,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:10:56 BoogieIcfgContainer [2021-02-24 04:10:56,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:10:56,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:10:56,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:10:56,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:10:56,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:10:55" (1/3) ... [2021-02-24 04:10:56,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eaa83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:10:56, skipping insertion in model container [2021-02-24 04:10:56,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:55" (2/3) ... [2021-02-24 04:10:56,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eaa83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:10:56, skipping insertion in model container [2021-02-24 04:10:56,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:10:56" (3/3) ... [2021-02-24 04:10:56,502 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2021-02-24 04:10:56,510 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:10:56,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:10:56,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:10:56,567 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:10:56,567 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:10:56,568 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:10:56,568 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:10:56,568 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:10:56,568 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:10:56,568 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:10:56,568 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:10:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-24 04:10:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:10:56,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:56,599 INFO L422 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] [2021-02-24 04:10:56,599 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2042570277, now seen corresponding path program 1 times [2021-02-24 04:10:56,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:56,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594431975] [2021-02-24 04:10:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:56,721 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:56,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:56,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:56,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:56,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:56,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:56,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:56,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:56,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:57,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:57,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:10:57,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594431975] [2021-02-24 04:10:57,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:57,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:10:57,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747114160] [2021-02-24 04:10:57,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:10:57,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:57,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:10:57,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:10:57,066 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-24 04:10:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:57,596 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-24 04:10:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:10:57,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 04:10:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:57,610 INFO L225 Difference]: With dead ends: 67 [2021-02-24 04:10:57,611 INFO L226 Difference]: Without dead ends: 50 [2021-02-24 04:10:57,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-24 04:10:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-24 04:10:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:10:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-24 04:10:57,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 24 [2021-02-24 04:10:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:57,698 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-24 04:10:57,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:10:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-24 04:10:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 04:10:57,701 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:57,702 INFO L422 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] [2021-02-24 04:10:57,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:10:57,702 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:57,703 INFO L82 PathProgramCache]: Analyzing trace with hash -589714176, now seen corresponding path program 1 times [2021-02-24 04:10:57,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:57,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986149201] [2021-02-24 04:10:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:57,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:57,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:57,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:57,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:57,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:57,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:57,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:57,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:10:57,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986149201] [2021-02-24 04:10:57,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:57,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:10:57,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170779796] [2021-02-24 04:10:57,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:10:57,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:10:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:10:57,850 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2021-02-24 04:10:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:58,168 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-24 04:10:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:10:58,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-24 04:10:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:58,171 INFO L225 Difference]: With dead ends: 58 [2021-02-24 04:10:58,171 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:10:58,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:10:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-24 04:10:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:10:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-24 04:10:58,192 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2021-02-24 04:10:58,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:58,193 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-24 04:10:58,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:10:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-24 04:10:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 04:10:58,195 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:58,196 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 04:10:58,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:10:58,196 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash -374229603, now seen corresponding path program 1 times [2021-02-24 04:10:58,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:58,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625176886] [2021-02-24 04:10:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:58,201 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,307 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 04:10:58,307 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 04:10:58,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:10:58,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-24 04:10:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:10:58,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625176886] [2021-02-24 04:10:58,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:58,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:10:58,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337192005] [2021-02-24 04:10:58,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:10:58,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:58,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:10:58,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:10:58,362 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2021-02-24 04:10:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:58,754 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-02-24 04:10:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:10:58,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-24 04:10:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:58,757 INFO L225 Difference]: With dead ends: 90 [2021-02-24 04:10:58,757 INFO L226 Difference]: Without dead ends: 54 [2021-02-24 04:10:58,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:10:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-24 04:10:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-02-24 04:10:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:10:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-24 04:10:58,776 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 41 [2021-02-24 04:10:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:58,777 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-24 04:10:58,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:10:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-24 04:10:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:10:58,779 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:58,780 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 04:10:58,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:10:58,780 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash -245289899, now seen corresponding path program 1 times [2021-02-24 04:10:58,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009228185] [2021-02-24 04:10:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:58,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:58,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:58,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:58,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:10:58,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009228185] [2021-02-24 04:10:58,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:58,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:10:58,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020988128] [2021-02-24 04:10:58,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:10:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:10:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:58,994 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-02-24 04:10:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:59,562 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-02-24 04:10:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:10:59,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-24 04:10:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:59,566 INFO L225 Difference]: With dead ends: 82 [2021-02-24 04:10:59,566 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 04:10:59,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:10:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 04:10:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-02-24 04:10:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 04:10:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-02-24 04:10:59,590 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 42 [2021-02-24 04:10:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:59,591 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-02-24 04:10:59,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:10:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-02-24 04:10:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 04:10:59,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:59,594 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 04:10:59,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:10:59,595 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:59,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1853062104, now seen corresponding path program 1 times [2021-02-24 04:10:59,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:59,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021692555] [2021-02-24 04:10:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:59,598 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,704 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 04:10:59,704 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 04:10:59,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:10:59,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:59,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-24 04:10:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 04:10:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:59,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:59,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:10:59,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021692555] [2021-02-24 04:10:59,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:59,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:10:59,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414579527] [2021-02-24 04:10:59,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:10:59,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:59,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:10:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:10:59,758 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 7 states. [2021-02-24 04:11:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:00,066 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2021-02-24 04:11:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:11:00,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-02-24 04:11:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:00,069 INFO L225 Difference]: With dead ends: 138 [2021-02-24 04:11:00,070 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 04:11:00,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:11:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 04:11:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-24 04:11:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:11:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-02-24 04:11:00,095 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 58 [2021-02-24 04:11:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:00,096 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-02-24 04:11:00,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:11:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-02-24 04:11:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-24 04:11:00,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:00,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-24 04:11:00,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:11:00,099 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1662933173, now seen corresponding path program 1 times [2021-02-24 04:11:00,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:00,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746561474] [2021-02-24 04:11:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:00,103 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,245 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:00,246 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:00,258 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:00,259 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:00,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 04:11:00,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746561474] [2021-02-24 04:11:00,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:00,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:11:00,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569962318] [2021-02-24 04:11:00,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:11:00,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:00,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:11:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:11:00,318 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-02-24 04:11:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:00,784 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-02-24 04:11:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:11:00,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-24 04:11:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:00,792 INFO L225 Difference]: With dead ends: 150 [2021-02-24 04:11:00,792 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 04:11:00,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:11:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 04:11:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-02-24 04:11:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-24 04:11:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-02-24 04:11:00,827 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 59 [2021-02-24 04:11:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:00,828 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-02-24 04:11:00,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:11:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-02-24 04:11:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-24 04:11:00,830 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:00,830 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 04:11:00,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:11:00,831 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -702082707, now seen corresponding path program 1 times [2021-02-24 04:11:00,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:00,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117838363] [2021-02-24 04:11:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:00,834 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:00,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:00,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:00,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:00,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:00,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:11:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117838363] [2021-02-24 04:11:01,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:01,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:11:01,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964325465] [2021-02-24 04:11:01,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:11:01,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:11:01,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:11:01,024 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 11 states. [2021-02-24 04:11:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:01,730 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2021-02-24 04:11:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:11:01,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2021-02-24 04:11:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:01,733 INFO L225 Difference]: With dead ends: 126 [2021-02-24 04:11:01,733 INFO L226 Difference]: Without dead ends: 120 [2021-02-24 04:11:01,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:11:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-24 04:11:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2021-02-24 04:11:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-24 04:11:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2021-02-24 04:11:01,763 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 60 [2021-02-24 04:11:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:01,764 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2021-02-24 04:11:01,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:11:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2021-02-24 04:11:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 04:11:01,766 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:01,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-02-24 04:11:01,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:11:01,767 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:01,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1046643654, now seen corresponding path program 1 times [2021-02-24 04:11:01,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:01,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013396031] [2021-02-24 04:11:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:01,770 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,904 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:01,904 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:01,916 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:01,916 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:01,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-24 04:11:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:01,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:01,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-24 04:11:01,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013396031] [2021-02-24 04:11:01,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:01,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:11:01,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483437347] [2021-02-24 04:11:01,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:11:01,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:11:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:11:01,995 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 10 states. [2021-02-24 04:11:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:02,503 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2021-02-24 04:11:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:11:02,504 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2021-02-24 04:11:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:02,507 INFO L225 Difference]: With dead ends: 235 [2021-02-24 04:11:02,507 INFO L226 Difference]: Without dead ends: 135 [2021-02-24 04:11:02,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:11:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-24 04:11:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-02-24 04:11:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-24 04:11:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2021-02-24 04:11:02,540 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 77 [2021-02-24 04:11:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:02,540 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2021-02-24 04:11:02,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:11:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2021-02-24 04:11:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-24 04:11:02,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:02,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2021-02-24 04:11:02,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:11:02,543 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash 549553181, now seen corresponding path program 1 times [2021-02-24 04:11:02,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:02,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023778276] [2021-02-24 04:11:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:02,546 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:02,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,715 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:02,716 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:02,730 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:02,731 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:02,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:02,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:02,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:11:02,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023778276] [2021-02-24 04:11:02,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:02,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:11:02,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673921595] [2021-02-24 04:11:02,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:11:02,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:02,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:11:02,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:11:02,832 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 12 states. [2021-02-24 04:11:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:03,519 INFO L93 Difference]: Finished difference Result 265 states and 408 transitions. [2021-02-24 04:11:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:11:03,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2021-02-24 04:11:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:03,522 INFO L225 Difference]: With dead ends: 265 [2021-02-24 04:11:03,523 INFO L226 Difference]: Without dead ends: 159 [2021-02-24 04:11:03,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:11:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-24 04:11:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2021-02-24 04:11:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-24 04:11:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-02-24 04:11:03,559 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 78 [2021-02-24 04:11:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:03,559 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-02-24 04:11:03,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:11:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-02-24 04:11:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 04:11:03,562 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:03,562 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:11:03,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:11:03,563 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1728392861, now seen corresponding path program 2 times [2021-02-24 04:11:03,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:03,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918949175] [2021-02-24 04:11:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:03,566 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:03,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:03,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:03,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:03,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:03,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-02-24 04:11:03,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918949175] [2021-02-24 04:11:03,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:03,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:11:03,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226224996] [2021-02-24 04:11:03,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:11:03,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:03,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:11:03,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:11:03,846 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 13 states. [2021-02-24 04:11:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:04,668 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2021-02-24 04:11:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:11:04,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2021-02-24 04:11:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:04,674 INFO L225 Difference]: With dead ends: 221 [2021-02-24 04:11:04,674 INFO L226 Difference]: Without dead ends: 215 [2021-02-24 04:11:04,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:11:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-24 04:11:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 209. [2021-02-24 04:11:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-24 04:11:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 310 transitions. [2021-02-24 04:11:04,735 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 310 transitions. Word has length 113 [2021-02-24 04:11:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:04,735 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 310 transitions. [2021-02-24 04:11:04,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:11:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 310 transitions. [2021-02-24 04:11:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-24 04:11:04,740 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:04,740 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 04:11:04,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:11:04,741 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1860651107, now seen corresponding path program 2 times [2021-02-24 04:11:04,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:04,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608585272] [2021-02-24 04:11:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:04,744 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:04,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,921 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:04,922 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:04,934 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:04,935 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:04,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:04,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:04,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 04:11:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:05,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:05,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-02-24 04:11:05,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608585272] [2021-02-24 04:11:05,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:05,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:11:05,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291135474] [2021-02-24 04:11:05,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:11:05,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:05,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:11:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:11:05,066 INFO L87 Difference]: Start difference. First operand 209 states and 310 transitions. Second operand 13 states. [2021-02-24 04:11:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:05,912 INFO L93 Difference]: Finished difference Result 457 states and 782 transitions. [2021-02-24 04:11:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:11:05,913 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 149 [2021-02-24 04:11:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:05,918 INFO L225 Difference]: With dead ends: 457 [2021-02-24 04:11:05,918 INFO L226 Difference]: Without dead ends: 265 [2021-02-24 04:11:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:11:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-02-24 04:11:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 235. [2021-02-24 04:11:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-24 04:11:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 363 transitions. [2021-02-24 04:11:05,979 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 363 transitions. Word has length 149 [2021-02-24 04:11:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:05,980 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 363 transitions. [2021-02-24 04:11:05,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:11:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 363 transitions. [2021-02-24 04:11:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-02-24 04:11:05,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:05,985 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:11:05,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:11:05,986 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:05,986 INFO L82 PathProgramCache]: Analyzing trace with hash 410292893, now seen corresponding path program 3 times [2021-02-24 04:11:05,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:05,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009027609] [2021-02-24 04:11:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:05,989 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:06,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:06,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:06,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:11:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 04:11:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:06,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:11:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,543 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:06,543 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:06,562 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:06,562 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:06,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:06,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:06,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 18 proven. 56 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-02-24 04:11:06,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009027609] [2021-02-24 04:11:06,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:06,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-24 04:11:06,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148659877] [2021-02-24 04:11:06,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 04:11:06,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:06,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 04:11:06,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:11:06,746 INFO L87 Difference]: Start difference. First operand 235 states and 363 transitions. Second operand 21 states. [2021-02-24 04:11:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:08,586 INFO L93 Difference]: Finished difference Result 429 states and 722 transitions. [2021-02-24 04:11:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 04:11:08,587 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 240 [2021-02-24 04:11:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:08,591 INFO L225 Difference]: With dead ends: 429 [2021-02-24 04:11:08,592 INFO L226 Difference]: Without dead ends: 204 [2021-02-24 04:11:08,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 04:11:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-02-24 04:11:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 179. [2021-02-24 04:11:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-02-24 04:11:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-02-24 04:11:08,657 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 240 [2021-02-24 04:11:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:08,658 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-02-24 04:11:08,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 04:11:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-02-24 04:11:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-24 04:11:08,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:08,660 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 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] [2021-02-24 04:11:08,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:11:08,661 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1315805160, now seen corresponding path program 4 times [2021-02-24 04:11:08,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:08,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328457257] [2021-02-24 04:11:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:08,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,835 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:08,836 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:08,851 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:08,851 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:08,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-24 04:11:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:08,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:08,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:08,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-24 04:11:08,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328457257] [2021-02-24 04:11:08,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:08,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:11:08,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576917059] [2021-02-24 04:11:08,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:11:08,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:11:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:11:08,993 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 14 states. [2021-02-24 04:11:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:09,891 INFO L93 Difference]: Finished difference Result 348 states and 474 transitions. [2021-02-24 04:11:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:11:09,892 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2021-02-24 04:11:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:09,895 INFO L225 Difference]: With dead ends: 348 [2021-02-24 04:11:09,895 INFO L226 Difference]: Without dead ends: 190 [2021-02-24 04:11:09,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-02-24 04:11:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-24 04:11:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-02-24 04:11:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-02-24 04:11:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 249 transitions. [2021-02-24 04:11:09,935 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 249 transitions. Word has length 131 [2021-02-24 04:11:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:09,936 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 249 transitions. [2021-02-24 04:11:09,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:11:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 249 transitions. [2021-02-24 04:11:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-24 04:11:09,938 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:09,939 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-24 04:11:09,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:11:09,939 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1825236008, now seen corresponding path program 1 times [2021-02-24 04:11:09,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:09,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361554224] [2021-02-24 04:11:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:09,945 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:09,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:09,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:09,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:09,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:09,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:09,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:10,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:10,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:10,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-24 04:11:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:10,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:10,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-24 04:11:10,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361554224] [2021-02-24 04:11:10,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:10,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:11:10,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206387018] [2021-02-24 04:11:10,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:11:10,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:10,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:11:10,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:11:10,315 INFO L87 Difference]: Start difference. First operand 190 states and 249 transitions. Second operand 16 states. [2021-02-24 04:11:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:11,547 INFO L93 Difference]: Finished difference Result 359 states and 492 transitions. [2021-02-24 04:11:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 04:11:11,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2021-02-24 04:11:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:11,551 INFO L225 Difference]: With dead ends: 359 [2021-02-24 04:11:11,551 INFO L226 Difference]: Without dead ends: 190 [2021-02-24 04:11:11,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2021-02-24 04:11:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-24 04:11:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2021-02-24 04:11:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2021-02-24 04:11:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 239 transitions. [2021-02-24 04:11:11,587 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 239 transitions. Word has length 149 [2021-02-24 04:11:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:11,587 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 239 transitions. [2021-02-24 04:11:11,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:11:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 239 transitions. [2021-02-24 04:11:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 04:11:11,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:11,590 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 04:11:11,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:11:11,590 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1835265144, now seen corresponding path program 2 times [2021-02-24 04:11:11,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:11,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447279033] [2021-02-24 04:11:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:11,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,643 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-24 04:11:11,644 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-24 04:11:11,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:11,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:11,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:11,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:11,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:11,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:11,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:12,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:12,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-24 04:11:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:12,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:11:12,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:12,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:12,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:12,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 04:11:12,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447279033] [2021-02-24 04:11:12,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:12,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-24 04:11:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908736761] [2021-02-24 04:11:12,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 04:11:12,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:12,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 04:11:12,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:11:12,605 INFO L87 Difference]: Start difference. First operand 184 states and 239 transitions. Second operand 23 states. [2021-02-24 04:11:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:15,429 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2021-02-24 04:11:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-24 04:11:15,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2021-02-24 04:11:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:15,432 INFO L225 Difference]: With dead ends: 207 [2021-02-24 04:11:15,432 INFO L226 Difference]: Without dead ends: 201 [2021-02-24 04:11:15,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=220, Invalid=2536, Unknown=0, NotChecked=0, Total=2756 [2021-02-24 04:11:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-02-24 04:11:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 192. [2021-02-24 04:11:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-24 04:11:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 251 transitions. [2021-02-24 04:11:15,474 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 251 transitions. Word has length 148 [2021-02-24 04:11:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:15,474 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 251 transitions. [2021-02-24 04:11:15,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 04:11:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 251 transitions. [2021-02-24 04:11:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-24 04:11:15,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:15,478 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-02-24 04:11:15,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 04:11:15,478 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash 183289714, now seen corresponding path program 3 times [2021-02-24 04:11:15,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:15,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280408055] [2021-02-24 04:11:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:15,482 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:15,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,716 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:15,716 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:15,731 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:15,731 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:15,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-24 04:11:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 04:11:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:15,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:15,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:15,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:15,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-24 04:11:15,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280408055] [2021-02-24 04:11:15,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:15,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:11:15,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211582565] [2021-02-24 04:11:15,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:11:15,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:15,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:11:15,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:11:15,991 INFO L87 Difference]: Start difference. First operand 192 states and 251 transitions. Second operand 18 states. [2021-02-24 04:11:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:17,236 INFO L93 Difference]: Finished difference Result 370 states and 497 transitions. [2021-02-24 04:11:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:11:17,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 201 [2021-02-24 04:11:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:17,240 INFO L225 Difference]: With dead ends: 370 [2021-02-24 04:11:17,240 INFO L226 Difference]: Without dead ends: 113 [2021-02-24 04:11:17,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:11:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-24 04:11:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-02-24 04:11:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-24 04:11:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2021-02-24 04:11:17,265 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 201 [2021-02-24 04:11:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:17,266 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2021-02-24 04:11:17,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:11:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2021-02-24 04:11:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-24 04:11:17,268 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:11:17,268 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 04:11:17,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 04:11:17,269 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:11:17,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:11:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1120622697, now seen corresponding path program 4 times [2021-02-24 04:11:17,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:11:17,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988098736] [2021-02-24 04:11:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:11:17,272 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:11:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:11:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:11:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:17,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:17,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:17,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-24 04:11:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:17,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:11:17,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,660 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:11:17,661 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:11:17,679 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:11:17,680 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:11:17,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:11:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:11:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:11:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:11:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:11:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:11:17,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:11:17,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:11:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-02-24 04:11:17,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988098736] [2021-02-24 04:11:17,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:11:17,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-24 04:11:17,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997631008] [2021-02-24 04:11:17,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 04:11:17,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:11:17,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 04:11:17,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:11:17,822 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 21 states. [2021-02-24 04:11:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:11:19,231 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-02-24 04:11:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-24 04:11:19,232 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 183 [2021-02-24 04:11:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:11:19,233 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:11:19,233 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:11:19,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2021-02-24 04:11:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:11:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:11:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:11:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:11:19,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2021-02-24 04:11:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:11:19,235 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:11:19,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 04:11:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:11:19,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:11:19,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 04:11:19,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:11:26,239 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 9 [2021-02-24 04:11:26,392 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 6 [2021-02-24 04:11:26,871 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 24 [2021-02-24 04:11:27,054 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 6 [2021-02-24 04:11:27,854 WARN L202 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 42 [2021-02-24 04:11:28,458 WARN L202 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2021-02-24 04:11:28,957 WARN L202 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 23 [2021-02-24 04:11:29,667 WARN L202 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 39 [2021-02-24 04:11:30,385 WARN L202 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 39 [2021-02-24 04:11:30,544 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 6 [2021-02-24 04:11:31,065 WARN L202 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 24 [2021-02-24 04:11:31,518 WARN L202 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-02-24 04:11:32,133 WARN L202 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2021-02-24 04:11:32,641 WARN L202 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-02-24 04:11:32,761 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 6 [2021-02-24 04:11:33,851 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2021-02-24 04:11:33,959 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 7 [2021-02-24 04:11:34,421 WARN L202 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 24 [2021-02-24 04:11:35,097 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2021-02-24 04:11:35,589 WARN L202 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 41 [2021-02-24 04:11:36,019 WARN L202 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 33 [2021-02-24 04:11:36,161 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 8 [2021-02-24 04:11:37,313 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2021-02-24 04:11:37,488 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-24 04:11:37,488 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-24 04:11:37,488 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-24 04:11:37,489 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,489 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,489 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,489 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,489 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,489 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,490 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,491 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,491 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:11:37,491 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) the Hoare annotation is: false [2021-02-24 04:11:37,491 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true [2021-02-24 04:11:37,491 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 37 44) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-24 04:11:37,491 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 37 44) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-24 04:11:37,491 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L40(lines 40 42) the Hoare annotation is: (and (<= main_~x~0 5) (< 4 main_~result~0) (<= 5 main_~x~0) (<= main_~result~0 5)) [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0)) [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L40-2(lines 40 42) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L39-2(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-24 04:11:37,492 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (< 4 main_~result~0) (<= 5 main_~x~0) (<= main_~result~0 5) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-24 04:11:37,492 INFO L192 CegarLoopUtils]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (or (not (<= |fibo2_#in~n| 4)) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= fibo2_~n 3)) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 1) (< 0 fibo2_~n)) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (and (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (or (not (<= |fibo2_#in~n| 4)) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= fibo2_~n 3)) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L22(lines 22 26) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (and (let ((.cse0 (<= |fibo2_#t~ret9| 1)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse2 (<= 1 |fibo2_#t~ret9|))) (or (and .cse0 (<= fibo2_~n 2) (<= .cse1 1) .cse2 (<= 1 .cse1)) (and (<= .cse1 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 .cse1) (<= 2 |fibo2_#t~ret9|)) (and (<= 2 .cse1) (<= 3 fibo2_~n) (<= fibo2_~n 3) .cse0 (<= .cse1 2) .cse2) (<= 5 fibo2_~n))) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,493 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2021-02-24 04:11:37,494 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (and (let ((.cse0 (<= |fibo2_#t~ret9| 1)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse2 (<= 1 |fibo2_#t~ret9|))) (or (and .cse0 (<= fibo2_~n 2) (<= .cse1 1) .cse2 (<= 1 .cse1)) (and (<= .cse1 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 .cse1) (<= 2 |fibo2_#t~ret9|)) (and (<= 2 .cse1) (<= 3 fibo2_~n) (<= fibo2_~n 3) .cse0 (<= .cse1 2) .cse2) (<= 5 fibo2_~n))) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,494 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2021-02-24 04:11:37,494 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|) (<= fibo2_~n 3) .cse1 .cse2 (<= .cse0 2) .cse3) (and .cse2 (<= 5 fibo2_~n)) (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)) (and (<= .cse0 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse2 (<= 3 .cse0) (<= 2 |fibo2_#t~ret9|)))) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,494 INFO L185 CegarLoopUtils]: At program point L25-6(line 25) the Hoare annotation is: (and (let ((.cse0 (<= |fibo2_#t~ret9| 1)) (.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse2 (<= 1 |fibo2_#t~ret9|))) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse0 .cse1 (<= fibo2_~n 2) .cse2) (and .cse1 (<= 5 fibo2_~n)) (and (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse1 (<= 2 |fibo2_#t~ret9|)) (and (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|) (<= fibo2_~n 3) .cse0 .cse1 .cse2))) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:11:37,495 INFO L185 CegarLoopUtils]: At program point fibo2FINAL(lines 19 27) the Hoare annotation is: (and (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (< 0 fibo2_~n)) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 2))) (or (<= fibo2_~n 2) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) (<= fibo2_~n 3)) (<= 5 fibo2_~n) (and (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3))) (= fibo2_~n |fibo2_#in~n|)) [2021-02-24 04:11:37,495 INFO L185 CegarLoopUtils]: At program point fibo2EXIT(lines 19 27) the Hoare annotation is: (and (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (< 0 fibo2_~n)) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 2))) (or (<= fibo2_~n 2) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) (<= fibo2_~n 3)) (<= 5 fibo2_~n) (and (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3))) (= fibo2_~n |fibo2_#in~n|)) [2021-02-24 04:11:37,495 INFO L192 CegarLoopUtils]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2021-02-24 04:11:37,495 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:11:37,495 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 |fibo1_#t~ret7|) (<= 5 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 3)) (and .cse0 (<= 6 fibo1_~n)) (and (<= 1 |fibo1_#t~ret7|) (< 1 fibo1_~n) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse0))) [2021-02-24 04:11:37,495 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:11:37,496 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (or (<= fibo1_~n 4) (and (<= 3 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 3)) (<= 6 fibo1_~n)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0)))) [2021-02-24 04:11:37,496 INFO L185 CegarLoopUtils]: At program point L12(lines 12 16) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (< 0 fibo1_~n)) [2021-02-24 04:11:37,496 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse2 (<= 1 |fibo1_#t~ret7|)) (.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|)) (.cse3 (<= |fibo1_#t~ret7| 1))) (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse1) .cse0 (<= |fibo1_#t~ret7| 3) (<= .cse1 5)) (and (<= fibo1_~n 4) .cse0))) (or (and .cse2 (<= 1 .cse1) .cse3 (<= .cse1 1)) (not (<= |fibo1_#in~n| 2))) (or (and .cse2 (<= 2 .cse1) (<= .cse1 2) .cse3) (<= 4 |fibo1_#in~n|) (<= fibo1_~n 2)))) [2021-02-24 04:11:37,496 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:11:37,496 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse2 (<= 1 |fibo1_#t~ret7|)) (.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|)) (.cse3 (<= |fibo1_#t~ret7| 1))) (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse1) .cse0 (<= |fibo1_#t~ret7| 3) (<= .cse1 5)) (and (<= fibo1_~n 4) .cse0))) (or (and .cse2 (<= 1 .cse1) .cse3 (<= .cse1 1)) (not (<= |fibo1_#in~n| 2))) (or (and .cse2 (<= 2 .cse1) (<= .cse1 2) .cse3) (<= 4 |fibo1_#in~n|) (<= fibo1_~n 2)))) [2021-02-24 04:11:37,497 INFO L185 CegarLoopUtils]: At program point fibo1FINAL(lines 9 17) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 1)) (.cse1 (and (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)))) (and (or (not .cse0) (<= |fibo1_#in~n| 0) .cse1) (let ((.cse2 (<= fibo1_~n 4)) (.cse3 (< 1 fibo1_~n)) (.cse4 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 2 |fibo1_#res|) .cse2 .cse3 (<= |fibo1_#res| 2) .cse4) (and .cse2 .cse3 (<= 4 |fibo1_#in~n|) .cse4) (and .cse4 (<= 6 fibo1_~n)) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse4) (and .cse4 (<= fibo1_~n 2)))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n)) (or .cse0 .cse1 (not (<= |fibo1_#in~n| 2))))) [2021-02-24 04:11:37,497 INFO L185 CegarLoopUtils]: At program point L10(lines 10 16) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2021-02-24 04:11:37,497 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse2 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (let ((.cse1 (<= 1 |fibo1_#t~ret7|)) (.cse3 (<= |fibo1_#t~ret7| 1)) (.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 |fibo1_#in~n|) .cse0) (and (<= 3 fibo1_~n) (<= 2 |fibo1_#res|) .cse1 (<= 2 .cse2) (<= .cse2 2) .cse3 (<= |fibo1_#res| 2) .cse0) (and .cse1 (<= 1 .cse2) .cse3 (< 1 fibo1_~n) .cse0 (<= |fibo1_#res| 1) (<= .cse2 1) (<= fibo1_~n 2) (<= 1 |fibo1_#res|)))) (or (<= fibo1_~n 4) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse2) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) (<= |fibo1_#t~ret7| 3) (<= .cse2 5)) (<= 6 fibo1_~n)))) [2021-02-24 04:11:37,497 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: (and (or (and (< 1 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) .cse0 (<= fibo1_~n 3)) (and (<= fibo1_~n 4) (<= 4 |fibo1_#in~n|) .cse0) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse0) (and .cse0 (<= fibo1_~n 2))))) [2021-02-24 04:11:37,498 INFO L185 CegarLoopUtils]: At program point fibo1EXIT(lines 9 17) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 1)) (.cse1 (and (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)))) (and (or (not .cse0) (<= |fibo1_#in~n| 0) .cse1) (let ((.cse2 (<= fibo1_~n 4)) (.cse3 (< 1 fibo1_~n)) (.cse4 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 2 |fibo1_#res|) .cse2 .cse3 (<= |fibo1_#res| 2) .cse4) (and .cse2 .cse3 (<= 4 |fibo1_#in~n|) .cse4) (and .cse4 (<= 6 fibo1_~n)) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse4) (and .cse4 (<= fibo1_~n 2)))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n)) (or .cse0 .cse1 (not (<= |fibo1_#in~n| 2))))) [2021-02-24 04:11:37,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:11:37 BoogieIcfgContainer [2021-02-24 04:11:37,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:11:37,531 INFO L168 Benchmark]: Toolchain (without parser) took 41959.59 ms. Allocated memory was 174.1 MB in the beginning and 444.6 MB in the end (delta: 270.5 MB). Free memory was 150.4 MB in the beginning and 359.7 MB in the end (delta: -209.3 MB). Peak memory consumption was 269.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:11:37,532 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 174.1 MB. Free memory is still 149.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:11:37,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.21 ms. Allocated memory is still 174.1 MB. Free memory was 149.3 MB in the beginning and 140.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:11:37,532 INFO L168 Benchmark]: Boogie Preprocessor took 36.55 ms. Allocated memory is still 174.1 MB. Free memory was 140.0 MB in the beginning and 138.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:11:37,532 INFO L168 Benchmark]: RCFGBuilder took 525.26 ms. Allocated memory is still 174.1 MB. Free memory was 138.6 MB in the beginning and 122.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:11:37,533 INFO L168 Benchmark]: TraceAbstraction took 41036.50 ms. Allocated memory was 174.1 MB in the beginning and 444.6 MB in the end (delta: 270.5 MB). Free memory was 156.6 MB in the beginning and 359.7 MB in the end (delta: -203.1 MB). Peak memory consumption was 274.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:11:37,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 174.1 MB. Free memory is still 149.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.21 ms. Allocated memory is still 174.1 MB. Free memory was 149.3 MB in the beginning and 140.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.55 ms. Allocated memory is still 174.1 MB. Free memory was 140.0 MB in the beginning and 138.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 525.26 ms. Allocated memory is still 174.1 MB. Free memory was 138.6 MB in the beginning and 122.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41036.50 ms. Allocated memory was 174.1 MB in the beginning and 444.6 MB in the end (delta: 270.5 MB). Free memory was 156.6 MB in the beginning and 359.7 MB in the end (delta: -203.1 MB). Peak memory consumption was 274.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 37]: Procedure Contract for main Derived contract for procedure main: 5 <= x - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2: ((((\result <= 0 && 0 <= \result) || 0 < n) && (((1 <= \result && \result <= 1) || \old(n) <= 0) || !(\old(n) <= 2))) && (((n <= 2 || ((\result <= 2 && 2 <= \result) && n <= 3)) || 5 <= n) || ((4 <= \old(n) && 3 <= \result) && \result <= 3))) && n == \old(n) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1: ((((!(\old(n) <= 1) || \old(n) <= 0) || (\result <= 1 && 1 <= \result)) && ((((((((2 <= \result && n <= 4) && 1 < n) && \result <= 2) && n == \old(n)) || (((n <= 4 && 1 < n) && 4 <= \old(n)) && n == \old(n))) || (n == \old(n) && 6 <= n)) || (((5 <= n && 5 <= \result) && \result <= 5) && n == \old(n))) || (n == \old(n) && n <= 2))) && ((0 <= \result && \result <= 0) || 0 < n)) && ((\old(n) <= 1 || (\result <= 1 && 1 <= \result)) || !(\old(n) <= 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.6s, OverallIterations: 17, TraceHistogramMax: 13, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 18.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 1716 SDslu, 2289 SDs, 0 SdLazy, 7479 SolverSat, 858 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 790 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 124 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 3064 PreInvPairs, 5549 NumberOfFragments, 1325 HoareAnnotationTreeSize, 3064 FomulaSimplifications, 467215 FormulaSimplificationTreeSizeReduction, 6.8s HoareSimplificationTime, 54 FomulaSimplificationsInter, 49144 FormulaSimplificationTreeSizeReductionInter, 11.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...