/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:57:15,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:57:15,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:57:15,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:57:15,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:57:15,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:57:15,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:57:15,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:57:15,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:57:15,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:57:15,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:57:15,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:57:15,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:57:15,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:57:15,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:57:15,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:57:16,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:57:16,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:57:16,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:57:16,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:57:16,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:57:16,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:57:16,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:57:16,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:57:16,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:57:16,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:57:16,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:57:16,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:57:16,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:57:16,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:57:16,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:57:16,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:57:16,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:57:16,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:57:16,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:57:16,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:57:16,044 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:57:16,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:57:16,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:57:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:57:16,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:57:16,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:57:16,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:57:16,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:57:16,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:57:16,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:57:16,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:57:16,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:57:16,626 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:57:16,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2021-02-23 17:57:16,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82ad7aa8/f72c02caf7d94b0988f1d71cb3367d8e/FLAG4fbf4405b [2021-02-23 17:57:17,505 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:57:17,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2021-02-23 17:57:17,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82ad7aa8/f72c02caf7d94b0988f1d71cb3367d8e/FLAG4fbf4405b [2021-02-23 17:57:17,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82ad7aa8/f72c02caf7d94b0988f1d71cb3367d8e [2021-02-23 17:57:17,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:57:17,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:57:17,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:57:17,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:57:17,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:57:17,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:57:17" (1/1) ... [2021-02-23 17:57:17,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a879142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:17, skipping insertion in model container [2021-02-23 17:57:17,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:57:17" (1/1) ... [2021-02-23 17:57:17,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:57:17,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:57:18,208 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/sum_20x0-2.c[481,494] [2021-02-23 17:57:18,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:57:18,225 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:57:18,242 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/sum_20x0-2.c[481,494] [2021-02-23 17:57:18,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:57:18,260 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:57:18,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18 WrapperNode [2021-02-23 17:57:18,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:57:18,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:57:18,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:57:18,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:57:18,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (1/1) ... [2021-02-23 17:57:18,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:57:18,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:57:18,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:57:18,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:57:18,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (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 [2021-02-23 17:57:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:57:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:57:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:57:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-23 17:57:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:57:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:57:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:57:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:57:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:57:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-23 17:57:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:57:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:57:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:57:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:57:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:57:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:57:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:57:18,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:57:18,673 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:57:18,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:57:18 BoogieIcfgContainer [2021-02-23 17:57:18,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:57:18,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:57:18,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:57:18,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:57:18,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:57:17" (1/3) ... [2021-02-23 17:57:18,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d26f44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:57:18, skipping insertion in model container [2021-02-23 17:57:18,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:18" (2/3) ... [2021-02-23 17:57:18,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d26f44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:57:18, skipping insertion in model container [2021-02-23 17:57:18,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:57:18" (3/3) ... [2021-02-23 17:57:18,729 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2021-02-23 17:57:18,749 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:57:18,763 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:57:18,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:57:18,854 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:57:18,854 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:57:18,854 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:57:18,854 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:57:18,854 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:57:18,855 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:57:18,855 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:57:18,855 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:57:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-23 17:57:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 17:57:18,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:18,884 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, 1] [2021-02-23 17:57:18,884 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-23 17:57:18,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:18,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232025571] [2021-02-23 17:57:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:19,006 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:19,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:19,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:19,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:19,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:19,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:19,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:57:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232025571] [2021-02-23 17:57:19,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:19,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:57:19,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65448492] [2021-02-23 17:57:19,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:57:19,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:19,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:57:19,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:57:19,428 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-23 17:57:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:19,709 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-23 17:57:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:57:19,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-23 17:57:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:19,724 INFO L225 Difference]: With dead ends: 48 [2021-02-23 17:57:19,724 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 17:57:19,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:57:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 17:57:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 17:57:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 17:57:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-23 17:57:19,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-23 17:57:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:19,798 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-23 17:57:19,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:57:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-23 17:57:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 17:57:19,801 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:19,802 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 17:57:19,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:57:19,803 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:19,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:19,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-23 17:57:19,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:19,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163414655] [2021-02-23 17:57:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:19,809 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:19,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:19,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:19,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:19,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:20,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 17:57:20,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163414655] [2021-02-23 17:57:20,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:20,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:57:20,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861200839] [2021-02-23 17:57:20,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:57:20,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:20,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:57:20,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:57:20,089 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-23 17:57:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:20,398 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-23 17:57:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:57:20,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-23 17:57:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:20,409 INFO L225 Difference]: With dead ends: 44 [2021-02-23 17:57:20,410 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 17:57:20,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:57:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 17:57:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 17:57:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 17:57:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-23 17:57:20,446 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-23 17:57:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:20,447 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-23 17:57:20,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:57:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-23 17:57:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 17:57:20,450 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:20,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-02-23 17:57:20,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:57:20,451 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:20,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-23 17:57:20,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:20,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194758640] [2021-02-23 17:57:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:20,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:20,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:20,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:20,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:20,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 17:57:20,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194758640] [2021-02-23 17:57:20,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:20,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:57:20,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224346958] [2021-02-23 17:57:20,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:57:20,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:57:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:57:20,798 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-23 17:57:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:21,089 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-23 17:57:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:57:21,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-23 17:57:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:21,092 INFO L225 Difference]: With dead ends: 49 [2021-02-23 17:57:21,092 INFO L226 Difference]: Without dead ends: 43 [2021-02-23 17:57:21,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:57:21,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-23 17:57:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-23 17:57:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-23 17:57:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-23 17:57:21,107 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-23 17:57:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:21,108 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-23 17:57:21,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:57:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-23 17:57:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:57:21,110 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:21,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:21,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:57:21,111 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-23 17:57:21,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:21,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308915918] [2021-02-23 17:57:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:21,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:21,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-23 17:57:21,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308915918] [2021-02-23 17:57:21,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:21,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:57:21,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60436508] [2021-02-23 17:57:21,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:57:21,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:21,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:57:21,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:57:21,316 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-23 17:57:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:21,680 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-23 17:57:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:57:21,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-23 17:57:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:21,685 INFO L225 Difference]: With dead ends: 54 [2021-02-23 17:57:21,685 INFO L226 Difference]: Without dead ends: 48 [2021-02-23 17:57:21,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:57:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-23 17:57:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-23 17:57:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-23 17:57:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-23 17:57:21,714 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-23 17:57:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:21,717 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-23 17:57:21,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:57:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-23 17:57:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 17:57:21,719 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:21,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:21,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:57:21,720 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-23 17:57:21,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:21,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463603160] [2021-02-23 17:57:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:21,724 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:21,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:21,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:21,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-23 17:57:21,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463603160] [2021-02-23 17:57:21,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:21,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:57:21,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098228158] [2021-02-23 17:57:21,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:57:21,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:57:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:57:21,956 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-23 17:57:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:22,467 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-23 17:57:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:57:22,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-23 17:57:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:22,469 INFO L225 Difference]: With dead ends: 59 [2021-02-23 17:57:22,469 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 17:57:22,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:57:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 17:57:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-23 17:57:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 17:57:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-23 17:57:22,484 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-23 17:57:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:22,485 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-23 17:57:22,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:57:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-23 17:57:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 17:57:22,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:22,487 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:22,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:57:22,487 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:22,488 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-23 17:57:22,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:22,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628587661] [2021-02-23 17:57:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:22,491 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:22,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:22,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:22,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:22,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-23 17:57:22,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628587661] [2021-02-23 17:57:22,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:22,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:57:22,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746529778] [2021-02-23 17:57:22,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:57:22,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:22,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:57:22,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:57:22,809 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-23 17:57:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:23,315 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-23 17:57:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:57:23,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-23 17:57:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:23,317 INFO L225 Difference]: With dead ends: 64 [2021-02-23 17:57:23,318 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 17:57:23,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:57:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 17:57:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 17:57:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 17:57:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-23 17:57:23,334 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-23 17:57:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:23,334 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-23 17:57:23,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:57:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-23 17:57:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 17:57:23,336 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:23,336 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1] [2021-02-23 17:57:23,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:57:23,337 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-23 17:57:23,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:23,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948964339] [2021-02-23 17:57:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:23,340 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:23,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:23,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:23,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:23,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-23 17:57:23,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948964339] [2021-02-23 17:57:23,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:23,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:57:23,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292062449] [2021-02-23 17:57:23,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:57:23,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:23,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:57:23,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:57:23,708 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-23 17:57:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:24,248 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-23 17:57:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:57:24,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 17:57:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:24,250 INFO L225 Difference]: With dead ends: 69 [2021-02-23 17:57:24,250 INFO L226 Difference]: Without dead ends: 63 [2021-02-23 17:57:24,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:57:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-23 17:57:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-23 17:57:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-23 17:57:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-23 17:57:24,269 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-23 17:57:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:24,270 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-23 17:57:24,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:57:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-23 17:57:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:57:24,271 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:24,272 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:24,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:57:24,272 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-23 17:57:24,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:24,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679598687] [2021-02-23 17:57:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:24,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:24,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:24,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:24,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:24,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:24,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-23 17:57:24,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679598687] [2021-02-23 17:57:24,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:24,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:57:24,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399084947] [2021-02-23 17:57:24,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:57:24,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:57:24,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:57:24,657 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-23 17:57:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:25,194 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-23 17:57:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:57:25,194 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-23 17:57:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:25,202 INFO L225 Difference]: With dead ends: 74 [2021-02-23 17:57:25,202 INFO L226 Difference]: Without dead ends: 68 [2021-02-23 17:57:25,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:57:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-23 17:57:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-23 17:57:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 17:57:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-23 17:57:25,241 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-23 17:57:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:25,242 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-23 17:57:25,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:57:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-23 17:57:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:57:25,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:25,250 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:25,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:57:25,251 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:25,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-23 17:57:25,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:25,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174378340] [2021-02-23 17:57:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:25,254 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:25,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:25,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:25,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:25,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-23 17:57:25,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174378340] [2021-02-23 17:57:25,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:25,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:57:25,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898596366] [2021-02-23 17:57:25,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:57:25,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:57:25,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:57:25,760 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-23 17:57:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:26,312 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-23 17:57:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:57:26,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-23 17:57:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:26,314 INFO L225 Difference]: With dead ends: 79 [2021-02-23 17:57:26,314 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 17:57:26,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:57:26,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 17:57:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 17:57:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 17:57:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-23 17:57:26,332 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-23 17:57:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:26,333 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-23 17:57:26,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:57:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-23 17:57:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-23 17:57:26,334 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:26,334 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:26,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:57:26,335 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-23 17:57:26,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:26,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402008280] [2021-02-23 17:57:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:26,338 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:26,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:26,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:26,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:26,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-23 17:57:26,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402008280] [2021-02-23 17:57:26,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:26,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:57:26,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183549820] [2021-02-23 17:57:26,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:57:26,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:57:26,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:57:26,808 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-23 17:57:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:27,403 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-23 17:57:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:57:27,403 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-23 17:57:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:27,404 INFO L225 Difference]: With dead ends: 84 [2021-02-23 17:57:27,405 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 17:57:27,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:57:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 17:57:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 17:57:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 17:57:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-23 17:57:27,421 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-23 17:57:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:27,422 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-23 17:57:27,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:57:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-23 17:57:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-23 17:57:27,423 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:27,423 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:27,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:57:27,424 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-23 17:57:27,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:27,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706723995] [2021-02-23 17:57:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:27,427 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:27,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:27,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:27,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:27,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-02-23 17:57:27,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706723995] [2021-02-23 17:57:27,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:27,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 17:57:27,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865225808] [2021-02-23 17:57:27,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 17:57:27,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 17:57:27,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:57:27,925 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2021-02-23 17:57:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:28,582 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-02-23 17:57:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:57:28,583 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 116 [2021-02-23 17:57:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:28,584 INFO L225 Difference]: With dead ends: 89 [2021-02-23 17:57:28,584 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 17:57:28,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:57:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 17:57:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-23 17:57:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 17:57:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-02-23 17:57:28,600 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2021-02-23 17:57:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:28,601 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-02-23 17:57:28,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 17:57:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-02-23 17:57:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-23 17:57:28,603 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:28,603 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:28,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:57:28,603 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:28,604 INFO L82 PathProgramCache]: Analyzing trace with hash -790695152, now seen corresponding path program 11 times [2021-02-23 17:57:28,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:28,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66505798] [2021-02-23 17:57:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:28,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:28,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:28,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:28,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:28,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:29,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:29,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:29,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:29,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:29,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:29,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-02-23 17:57:29,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66505798] [2021-02-23 17:57:29,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:29,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 17:57:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035056034] [2021-02-23 17:57:29,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 17:57:29,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 17:57:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:57:29,286 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 18 states. [2021-02-23 17:57:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:30,002 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-02-23 17:57:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 17:57:30,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2021-02-23 17:57:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:30,004 INFO L225 Difference]: With dead ends: 94 [2021-02-23 17:57:30,004 INFO L226 Difference]: Without dead ends: 88 [2021-02-23 17:57:30,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=667, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:57:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-23 17:57:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-02-23 17:57:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-02-23 17:57:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-02-23 17:57:30,025 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 125 [2021-02-23 17:57:30,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:30,025 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-02-23 17:57:30,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 17:57:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-02-23 17:57:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-23 17:57:30,027 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:30,027 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:30,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:57:30,028 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:30,028 INFO L82 PathProgramCache]: Analyzing trace with hash -126776542, now seen corresponding path program 12 times [2021-02-23 17:57:30,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:30,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111657340] [2021-02-23 17:57:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:30,032 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:30,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:30,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:30,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:30,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-02-23 17:57:30,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111657340] [2021-02-23 17:57:30,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:30,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 17:57:30,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449709416] [2021-02-23 17:57:30,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 17:57:30,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 17:57:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:57:30,755 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 19 states. [2021-02-23 17:57:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:31,511 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-02-23 17:57:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 17:57:31,512 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2021-02-23 17:57:31,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:31,516 INFO L225 Difference]: With dead ends: 99 [2021-02-23 17:57:31,516 INFO L226 Difference]: Without dead ends: 93 [2021-02-23 17:57:31,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 17:57:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-23 17:57:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-02-23 17:57:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-23 17:57:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-02-23 17:57:31,535 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 134 [2021-02-23 17:57:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:31,536 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-02-23 17:57:31,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 17:57:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-02-23 17:57:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-23 17:57:31,538 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:31,538 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:31,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:57:31,539 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:31,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1918613256, now seen corresponding path program 13 times [2021-02-23 17:57:31,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:31,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11719135] [2021-02-23 17:57:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:31,542 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:31,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:31,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:31,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:32,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-02-23 17:57:32,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11719135] [2021-02-23 17:57:32,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:32,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:57:32,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005219072] [2021-02-23 17:57:32,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:57:32,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:57:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:57:32,322 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 20 states. [2021-02-23 17:57:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:33,127 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-02-23 17:57:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:57:33,128 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2021-02-23 17:57:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:33,129 INFO L225 Difference]: With dead ends: 104 [2021-02-23 17:57:33,129 INFO L226 Difference]: Without dead ends: 98 [2021-02-23 17:57:33,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:57:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-23 17:57:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-02-23 17:57:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-23 17:57:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-02-23 17:57:33,144 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 143 [2021-02-23 17:57:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:33,144 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-02-23 17:57:33,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:57:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-02-23 17:57:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-23 17:57:33,146 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:33,146 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:33,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:57:33,147 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1212862762, now seen corresponding path program 14 times [2021-02-23 17:57:33,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:33,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069941365] [2021-02-23 17:57:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:33,150 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:33,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-02-23 17:57:33,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069941365] [2021-02-23 17:57:33,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:33,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 17:57:33,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792616236] [2021-02-23 17:57:33,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 17:57:33,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 17:57:33,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:57:33,891 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2021-02-23 17:57:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:34,724 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2021-02-23 17:57:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 17:57:34,724 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 152 [2021-02-23 17:57:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:34,726 INFO L225 Difference]: With dead ends: 109 [2021-02-23 17:57:34,726 INFO L226 Difference]: Without dead ends: 103 [2021-02-23 17:57:34,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 17:57:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-23 17:57:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-23 17:57:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-23 17:57:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-02-23 17:57:34,746 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 152 [2021-02-23 17:57:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:34,746 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-02-23 17:57:34,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 17:57:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-02-23 17:57:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 17:57:34,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:34,749 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:34,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 17:57:34,750 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1200326400, now seen corresponding path program 15 times [2021-02-23 17:57:34,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:34,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727007208] [2021-02-23 17:57:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:34,753 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:35,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-02-23 17:57:35,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727007208] [2021-02-23 17:57:35,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:35,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 17:57:35,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687786439] [2021-02-23 17:57:35,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 17:57:35,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:35,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 17:57:35,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:57:35,601 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 22 states. [2021-02-23 17:57:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:36,528 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2021-02-23 17:57:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 17:57:36,529 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 161 [2021-02-23 17:57:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:36,531 INFO L225 Difference]: With dead ends: 114 [2021-02-23 17:57:36,531 INFO L226 Difference]: Without dead ends: 108 [2021-02-23 17:57:36,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=523, Invalid=1037, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 17:57:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-02-23 17:57:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-02-23 17:57:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 17:57:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-02-23 17:57:36,549 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 161 [2021-02-23 17:57:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:36,550 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-02-23 17:57:36,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 17:57:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-02-23 17:57:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 17:57:36,552 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:36,553 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:36,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 17:57:36,553 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -433927374, now seen corresponding path program 16 times [2021-02-23 17:57:36,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:36,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283105887] [2021-02-23 17:57:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:36,556 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:37,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-02-23 17:57:37,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283105887] [2021-02-23 17:57:37,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:37,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 17:57:37,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853617343] [2021-02-23 17:57:37,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 17:57:37,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:37,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 17:57:37,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:57:37,429 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 23 states. [2021-02-23 17:57:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:38,463 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2021-02-23 17:57:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 17:57:38,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 170 [2021-02-23 17:57:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:38,465 INFO L225 Difference]: With dead ends: 119 [2021-02-23 17:57:38,465 INFO L226 Difference]: Without dead ends: 113 [2021-02-23 17:57:38,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=580, Invalid=1142, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 17:57:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-23 17:57:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-02-23 17:57:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-23 17:57:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-02-23 17:57:38,482 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 170 [2021-02-23 17:57:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:38,482 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-02-23 17:57:38,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 17:57:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-02-23 17:57:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-23 17:57:38,485 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:38,485 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:38,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 17:57:38,485 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:38,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1314200840, now seen corresponding path program 17 times [2021-02-23 17:57:38,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:38,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831984482] [2021-02-23 17:57:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:38,488 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:39,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-02-23 17:57:39,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831984482] [2021-02-23 17:57:39,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:39,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 17:57:39,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739512799] [2021-02-23 17:57:39,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 17:57:39,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 17:57:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:57:39,707 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 24 states. [2021-02-23 17:57:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:40,671 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2021-02-23 17:57:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 17:57:40,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 179 [2021-02-23 17:57:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:40,675 INFO L225 Difference]: With dead ends: 124 [2021-02-23 17:57:40,676 INFO L226 Difference]: Without dead ends: 118 [2021-02-23 17:57:40,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=640, Invalid=1252, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 17:57:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-23 17:57:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-02-23 17:57:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 17:57:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2021-02-23 17:57:40,693 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 179 [2021-02-23 17:57:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:40,694 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2021-02-23 17:57:40,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 17:57:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2021-02-23 17:57:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-02-23 17:57:40,696 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:40,696 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:40,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 17:57:40,697 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash 75299130, now seen corresponding path program 18 times [2021-02-23 17:57:40,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:40,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950188664] [2021-02-23 17:57:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:40,700 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:41,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-02-23 17:57:41,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950188664] [2021-02-23 17:57:41,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:41,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 17:57:41,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333094175] [2021-02-23 17:57:41,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 17:57:41,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:41,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 17:57:41,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2021-02-23 17:57:41,880 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2021-02-23 17:57:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:43,029 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2021-02-23 17:57:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 17:57:43,030 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 188 [2021-02-23 17:57:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:43,032 INFO L225 Difference]: With dead ends: 129 [2021-02-23 17:57:43,032 INFO L226 Difference]: Without dead ends: 123 [2021-02-23 17:57:43,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=703, Invalid=1367, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 17:57:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-23 17:57:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-02-23 17:57:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-23 17:57:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-02-23 17:57:43,049 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 188 [2021-02-23 17:57:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:43,050 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-02-23 17:57:43,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 17:57:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-02-23 17:57:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-23 17:57:43,052 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:43,053 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:43,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 17:57:43,053 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:43,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800624, now seen corresponding path program 19 times [2021-02-23 17:57:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:43,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775359682] [2021-02-23 17:57:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:43,056 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:43,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:43,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-02-23 17:57:44,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775359682] [2021-02-23 17:57:44,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:44,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-23 17:57:44,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057437447] [2021-02-23 17:57:44,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 17:57:44,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:44,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 17:57:44,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:57:44,290 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 26 states. [2021-02-23 17:57:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:45,542 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2021-02-23 17:57:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 17:57:45,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2021-02-23 17:57:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:45,544 INFO L225 Difference]: With dead ends: 134 [2021-02-23 17:57:45,545 INFO L226 Difference]: Without dead ends: 128 [2021-02-23 17:57:45,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=769, Invalid=1487, Unknown=0, NotChecked=0, Total=2256 [2021-02-23 17:57:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-02-23 17:57:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-02-23 17:57:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-23 17:57:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-02-23 17:57:45,563 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 197 [2021-02-23 17:57:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:45,563 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-02-23 17:57:45,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 17:57:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-02-23 17:57:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-02-23 17:57:45,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:45,566 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:45,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 17:57:45,566 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash -346236094, now seen corresponding path program 20 times [2021-02-23 17:57:45,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:45,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240311133] [2021-02-23 17:57:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:45,569 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:45,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:45,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:45,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:45,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:45,688 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-23 17:57:45,689 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-23 17:57:45,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:45,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:45,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:45,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:45,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:45,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:45,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:45,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:45,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:46,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:47,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:48,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:48,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:48,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:48,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:57:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-02-23 17:57:48,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240311133] [2021-02-23 17:57:48,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:48,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-02-23 17:57:48,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880822476] [2021-02-23 17:57:48,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-02-23 17:57:48,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:48,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-02-23 17:57:48,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 17:57:48,819 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 52 states. [2021-02-23 17:57:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:59,473 INFO L93 Difference]: Finished difference Result 128 states and 129 transitions. [2021-02-23 17:57:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-02-23 17:57:59,474 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 206 [2021-02-23 17:57:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:59,475 INFO L225 Difference]: With dead ends: 128 [2021-02-23 17:57:59,475 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:57:59,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2930, Invalid=11832, Unknown=0, NotChecked=0, Total=14762 [2021-02-23 17:57:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:57:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:57:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:57:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:57:59,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 206 [2021-02-23 17:57:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:59,482 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:57:59,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-02-23 17:57:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:57:59,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:57:59,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 17:57:59,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:58:01,509 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 173 DAG size of output: 131 [2021-02-23 17:58:02,753 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 151 DAG size of output: 109 [2021-02-23 17:58:03,994 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 151 DAG size of output: 109 [2021-02-23 17:58:05,241 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 157 DAG size of output: 112 [2021-02-23 17:58:06,449 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 157 DAG size of output: 112 [2021-02-23 17:58:06,617 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 17:58:06,618 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 17:58:06,618 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 17:58:06,618 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,618 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,618 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,619 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|)) [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,619 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,620 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,620 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,620 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:58:06,620 INFO L185 CegarLoopUtils]: At program point sumEXIT(lines 5 11) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#res| .cse3))) (or (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 (<= |sum_#in~n| 17) .cse1 .cse2 (<= (+ |sum_#in~m| 17) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 18)) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse2 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 19) .cse1 .cse2 (<= (+ |sum_#in~m| 19) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 16) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 16)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 15)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 20) |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:58:06,620 INFO L185 CegarLoopUtils]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= 1 sum_~n) (= sum_~m |sum_#in~m|)) [2021-02-23 17:58:06,621 INFO L185 CegarLoopUtils]: At program point L9-1(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 16) |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 15) .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 11) .cse2 (<= (+ |sum_#in~m| 11) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 17) .cse1 (<= (+ |sum_#in~m| 17) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 20) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 18) .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 13) |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse2) (and .cse0 (<= |sum_#in~n| 19) .cse1 (<= (+ |sum_#in~m| 19) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-23 17:58:06,621 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= sum_~n 0)) [2021-02-23 17:58:06,621 INFO L185 CegarLoopUtils]: At program point L9-2(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 16) |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 15) .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 11) .cse2 (<= (+ |sum_#in~m| 11) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 17) .cse1 (<= (+ |sum_#in~m| 17) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 20) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 18) .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 13) |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse2) (and .cse0 (<= |sum_#in~n| 19) .cse1 (<= (+ |sum_#in~m| 19) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-23 17:58:06,622 INFO L185 CegarLoopUtils]: At program point L6(lines 6 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2021-02-23 17:58:06,622 INFO L185 CegarLoopUtils]: At program point L9-3(line 9) the Hoare annotation is: (let ((.cse24 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse2 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse24)) (.cse4 (<= |sum_#t~ret7| .cse24))) (or (let ((.cse1 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse1 |sum_#t~ret7|) (<= .cse1 |sum_#res|) .cse2 (<= |sum_#in~n| 1) .cse3 .cse4)) (let ((.cse5 (+ |sum_#in~m| 3))) (and .cse0 (<= .cse5 |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 3) .cse3 (<= .cse5 |sum_#res|) .cse4)) (let ((.cse6 (+ |sum_#in~m| 18))) (and .cse0 (<= .cse6 |sum_#res|) (<= .cse6 |sum_#t~ret7|) .cse2 .cse3 (<= |sum_#in~n| 18) .cse4)) (let ((.cse7 (+ |sum_#in~m| 16))) (and .cse0 (<= .cse7 |sum_#res|) .cse2 .cse3 (<= .cse7 |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse4)) (let ((.cse8 (+ |sum_#in~m| 17))) (and .cse0 (<= |sum_#in~n| 17) .cse2 .cse3 (<= .cse8 |sum_#t~ret7|) .cse4 (<= .cse8 |sum_#res|))) (let ((.cse9 (+ |sum_#in~m| 7))) (and .cse0 .cse2 (<= .cse9 |sum_#res|) (<= |sum_#in~n| 7) .cse3 (<= .cse9 |sum_#t~ret7|) .cse4)) (let ((.cse10 (+ |sum_#in~m| 11))) (and .cse0 (<= .cse10 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 11) .cse4 (<= .cse10 |sum_#t~ret7|))) (let ((.cse11 (+ |sum_#in~m| 13))) (and .cse0 .cse2 (<= .cse11 |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse3 (<= .cse11 |sum_#res|) .cse4)) (let ((.cse12 (+ |sum_#in~m| 19))) (and .cse0 (<= |sum_#in~n| 19) .cse2 (<= .cse12 |sum_#t~ret7|) .cse3 (<= .cse12 |sum_#res|) .cse4)) (let ((.cse13 (+ |sum_#in~m| 4))) (and .cse0 (<= .cse13 |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse2 .cse3 (<= .cse13 |sum_#res|) .cse4)) (let ((.cse14 (+ |sum_#in~m| 8))) (and .cse0 .cse2 (<= |sum_#in~n| 8) .cse3 (<= .cse14 |sum_#res|) (<= .cse14 |sum_#t~ret7|) .cse4)) (let ((.cse15 (+ |sum_#in~m| 12))) (and .cse0 .cse2 .cse3 (<= |sum_#in~n| 12) (<= .cse15 |sum_#t~ret7|) .cse4 (<= .cse15 |sum_#res|))) (let ((.cse16 (+ |sum_#in~m| 6))) (and .cse0 (<= .cse16 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 6) (<= .cse16 |sum_#t~ret7|) .cse4)) (let ((.cse17 (+ |sum_#in~m| 14))) (and .cse0 (<= .cse17 |sum_#t~ret7|) (<= .cse17 |sum_#res|) .cse2 (<= |sum_#in~n| 14) .cse3 .cse4)) (let ((.cse18 (+ |sum_#in~m| 10))) (and .cse0 (<= .cse18 |sum_#res|) .cse2 .cse3 (<= .cse18 |sum_#t~ret7|) .cse4 (<= |sum_#in~n| 10))) (let ((.cse19 (+ |sum_#in~m| 5))) (and .cse0 (<= |sum_#in~n| 5) .cse2 .cse3 (<= .cse19 |sum_#t~ret7|) (<= .cse19 |sum_#res|) .cse4)) (let ((.cse20 (+ |sum_#in~m| 20))) (and .cse0 .cse2 .cse3 (<= .cse20 |sum_#t~ret7|) (<= .cse20 |sum_#res|) .cse4)) (let ((.cse21 (+ |sum_#in~m| 2))) (and .cse0 (<= .cse21 |sum_#res|) (<= |sum_#in~n| 2) .cse2 .cse3 .cse4 (<= .cse21 |sum_#t~ret7|))) (let ((.cse22 (+ |sum_#in~m| 9))) (and .cse0 .cse2 .cse3 (<= .cse22 |sum_#res|) (<= .cse22 |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse4)) (let ((.cse23 (+ |sum_#in~m| 15))) (and .cse0 (<= .cse23 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 15) .cse4 (<= .cse23 |sum_#t~ret7|)))))) [2021-02-23 17:58:06,622 INFO L185 CegarLoopUtils]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2021-02-23 17:58:06,623 INFO L185 CegarLoopUtils]: At program point sumFINAL(lines 5 11) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#res| .cse3))) (or (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 (<= |sum_#in~n| 17) .cse1 .cse2 (<= (+ |sum_#in~m| 17) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 18)) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse2 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 19) .cse1 .cse2 (<= (+ |sum_#in~m| 19) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 16) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 16)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 15)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 20) |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:58:06,623 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2021-02-23 17:58:06,623 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: false [2021-02-23 17:58:06,623 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2021-02-23 17:58:06,624 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (<= 20 main_~a~0) [2021-02-23 17:58:06,624 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false [2021-02-23 17:58:06,624 INFO L185 CegarLoopUtils]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= main_~a~0 main_~result~0) (<= main_~a~0 20) (<= 20 main_~a~0) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:06,624 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: false [2021-02-23 17:58:06,624 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~a~0 20) (<= 20 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:06,625 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (<= main_~a~0 20) (<= 20 main_~a~0)) [2021-02-23 17:58:06,625 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 20) (<= main_~a~0 |main_#t~ret8|) (<= 20 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:06,625 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (<= 20 main_~a~0) [2021-02-23 17:58:06,625 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 20) (<= main_~a~0 |main_#t~ret8|) (<= 20 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:06,625 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 main_~result~0) (<= main_~a~0 20) (<= main_~a~0 |main_#t~ret8|) (<= 20 main_~a~0) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:06,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:58:06 BoogieIcfgContainer [2021-02-23 17:58:06,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:58:06,658 INFO L168 Benchmark]: Toolchain (without parser) took 48764.83 ms. Allocated memory was 151.0 MB in the beginning and 574.6 MB in the end (delta: 423.6 MB). Free memory was 127.1 MB in the beginning and 495.7 MB in the end (delta: -368.7 MB). Peak memory consumption was 341.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:06,659 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:58:06,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:06,659 INFO L168 Benchmark]: Boogie Preprocessor took 42.05 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:06,659 INFO L168 Benchmark]: RCFGBuilder took 369.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:06,659 INFO L168 Benchmark]: TraceAbstraction took 47953.91 ms. Allocated memory was 151.0 MB in the beginning and 574.6 MB in the end (delta: 423.6 MB). Free memory was 133.9 MB in the beginning and 495.7 MB in the end (delta: -361.8 MB). Peak memory consumption was 346.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:06,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.05 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 369.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 47953.91 ms. Allocated memory was 151.0 MB in the beginning and 574.6 MB in the end (delta: 423.6 MB). Free memory was 133.9 MB in the beginning and 495.7 MB in the end (delta: -361.8 MB). Peak memory consumption was 346.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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: 5]: Procedure Contract for sum Derived contract for procedure sum: (((((((((((((((((((((((n == \old(n) && \old(m) + 6 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 6) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 9 <= \result) && \old(n) <= 9)) || ((((n == \old(n) && \old(n) <= 17) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 17 <= \result)) || ((((n == \old(n) && \old(m) + 10 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 10)) || ((((n == \old(n) && \old(m) + 1 <= \result) && m == \old(m)) && \old(n) <= 1) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 18 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 18)) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 3) && \result <= \old(n) + \old(m)) && \old(m) + 3 <= \result)) || ((((n == \old(n) && \old(n) <= 19) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 19 <= \result)) || ((((n == \old(n) && \old(m) + 2 <= \result) && \old(n) <= 2) && m == \old(m)) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(n) <= 4) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 4 <= \result)) || (((n == \old(n) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result)) || ((((n == \old(n) && \old(m) + 14 <= \result) && m == \old(m)) && \old(n) <= 14) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 8) && \result <= \old(n) + \old(m)) && \old(m) + 8 <= \result)) || ((((n == \old(n) && \old(m) + 16 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 16)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 12) && \old(m) + 12 <= \result)) || ((((n == \old(n) && \old(m) + 15 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 15)) || ((((n == \old(n) && m == \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 11 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 11)) || (((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 20 <= \result)) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 13) && \result <= \old(n) + \old(m)) && \old(m) + 13 <= \result)) || ((((n == \old(n) && \old(n) <= 5) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 5 <= \result) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 20 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.6s, OverallIterations: 21, TraceHistogramMax: 21, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 583 SDtfs, 2224 SDslu, 1401 SDs, 0 SdLazy, 4023 SolverSat, 632 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1184 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5397 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 46 PreInvPairs, 346 NumberOfFragments, 2392 HoareAnnotationTreeSize, 46 FomulaSimplifications, 5995 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 36 FomulaSimplificationsInter, 8260 FormulaSimplificationTreeSizeReductionInter, 6.3s 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...