/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_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:29:21,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:29:21,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:29:21,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:29:21,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:29:21,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:29:21,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:29:21,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:29:21,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:29:21,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:29:21,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:29:21,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:29:21,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:29:22,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:29:22,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:29:22,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:29:22,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:29:22,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:29:22,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:29:22,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:29:22,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:29:22,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:29:22,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:29:22,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:29:22,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:29:22,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:29:22,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:29:22,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:29:22,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:29:22,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:29:22,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:29:22,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:29:22,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:29:22,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:29:22,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:29:22,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:29:22,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:29:22,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:29:22,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:29:22,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:29:22,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:29:22,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:29:22,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:29:22,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:29:22,131 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:29:22,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:29:22,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:29:22,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:29:22,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:29:22,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:29:22,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:29:22,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:29:22,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:29:22,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:29:22,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:29:22,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:29:22,611 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:29:22,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2021-02-21 20:29:22,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdb970ef/2ec4fddcf17a4ee3b95721eb1bf8b25e/FLAGa3a50b14e [2021-02-21 20:29:23,380 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:29:23,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2021-02-21 20:29:23,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdb970ef/2ec4fddcf17a4ee3b95721eb1bf8b25e/FLAGa3a50b14e [2021-02-21 20:29:23,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdb970ef/2ec4fddcf17a4ee3b95721eb1bf8b25e [2021-02-21 20:29:23,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:29:23,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:29:23,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:29:23,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:29:23,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:29:23,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:29:23" (1/1) ... [2021-02-21 20:29:23,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6a6045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:23, skipping insertion in model container [2021-02-21 20:29:23,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:29:23" (1/1) ... [2021-02-21 20:29:23,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:29:23,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:29:24,043 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_10x0-1.c[481,494] [2021-02-21 20:29:24,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:29:24,068 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:29:24,090 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_10x0-1.c[481,494] [2021-02-21 20:29:24,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:29:24,110 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:29:24,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24 WrapperNode [2021-02-21 20:29:24,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:29:24,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:29:24,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:29:24,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:29:24,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (1/1) ... [2021-02-21 20:29:24,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:29:24,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:29:24,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:29:24,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:29:24,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (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 [2021-02-21 20:29:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:29:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:29:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:29:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-21 20:29:24,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:29:24,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:29:24,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:29:24,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:29:24,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:29:24,294 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-21 20:29:24,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:29:24,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:29:24,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:29:24,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:29:24,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:29:24,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:29:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:29:24,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:29:24,674 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:29:24,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:29:24 BoogieIcfgContainer [2021-02-21 20:29:24,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:29:24,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:29:24,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:29:24,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:29:24,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:29:23" (1/3) ... [2021-02-21 20:29:24,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257610dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:29:24, skipping insertion in model container [2021-02-21 20:29:24,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:29:24" (2/3) ... [2021-02-21 20:29:24,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257610dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:29:24, skipping insertion in model container [2021-02-21 20:29:24,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:29:24" (3/3) ... [2021-02-21 20:29:24,700 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2021-02-21 20:29:24,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:29:24,714 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:29:24,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:29:24,778 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:29:24,778 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:29:24,778 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:29:24,779 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:29:24,779 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:29:24,779 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:29:24,779 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:29:24,780 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:29:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-21 20:29:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 20:29:24,814 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:24,816 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] [2021-02-21 20:29:24,817 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-21 20:29:24,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:24,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409884843] [2021-02-21 20:29:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:24,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:25,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:29:25,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409884843] [2021-02-21 20:29:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:25,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:29:25,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871539124] [2021-02-21 20:29:25,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:29:25,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:25,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:29:25,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:29:25,347 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-21 20:29:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:25,655 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-21 20:29:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:29:25,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-21 20:29:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:25,684 INFO L225 Difference]: With dead ends: 48 [2021-02-21 20:29:25,685 INFO L226 Difference]: Without dead ends: 33 [2021-02-21 20:29:25,690 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 [2021-02-21 20:29:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-21 20:29:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-21 20:29:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-21 20:29:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-21 20:29:25,779 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-21 20:29:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:25,779 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-21 20:29:25,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:29:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-21 20:29:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 20:29:25,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:25,783 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] [2021-02-21 20:29:25,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:29:25,783 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:25,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-21 20:29:25,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:25,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731127951] [2021-02-21 20:29:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:25,798 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:25,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:25,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:26,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-21 20:29:26,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731127951] [2021-02-21 20:29:26,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:29:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846899714] [2021-02-21 20:29:26,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:29:26,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:29:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:29:26,038 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-21 20:29:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:26,329 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-21 20:29:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:29:26,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-21 20:29:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:26,332 INFO L225 Difference]: With dead ends: 44 [2021-02-21 20:29:26,332 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 20:29:26,334 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 [2021-02-21 20:29:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 20:29:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-21 20:29:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-21 20:29:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-21 20:29:26,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-21 20:29:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:26,350 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-21 20:29:26,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:29:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-21 20:29:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-21 20:29:26,352 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:26,352 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] [2021-02-21 20:29:26,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:29:26,353 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-21 20:29:26,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:26,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013597132] [2021-02-21 20:29:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:26,358 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:26,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:26,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-21 20:29:26,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013597132] [2021-02-21 20:29:26,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:26,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:29:26,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195991892] [2021-02-21 20:29:26,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:29:26,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:29:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:29:26,650 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-21 20:29:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:26,937 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-21 20:29:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:29:26,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-21 20:29:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:26,939 INFO L225 Difference]: With dead ends: 49 [2021-02-21 20:29:26,939 INFO L226 Difference]: Without dead ends: 43 [2021-02-21 20:29:26,940 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 [2021-02-21 20:29:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-21 20:29:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-21 20:29:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 20:29:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-21 20:29:26,955 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-21 20:29:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:26,956 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-21 20:29:26,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:29:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-21 20:29:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:29:26,958 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:26,958 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] [2021-02-21 20:29:26,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:29:26,959 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:26,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-21 20:29:26,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:26,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716575362] [2021-02-21 20:29:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:26,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:26,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:26,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:26,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:27,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-21 20:29:27,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716575362] [2021-02-21 20:29:27,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:27,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:29:27,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887748160] [2021-02-21 20:29:27,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:29:27,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:29:27,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:29:27,218 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-21 20:29:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:27,594 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-21 20:29:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:29:27,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-21 20:29:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:27,597 INFO L225 Difference]: With dead ends: 54 [2021-02-21 20:29:27,597 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 20:29:27,598 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 [2021-02-21 20:29:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 20:29:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-21 20:29:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-21 20:29:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-21 20:29:27,614 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-21 20:29:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:27,615 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-21 20:29:27,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:29:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-21 20:29:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:29:27,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:27,617 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] [2021-02-21 20:29:27,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:29:27,617 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-21 20:29:27,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:27,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390518692] [2021-02-21 20:29:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:27,621 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:27,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:27,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:27,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:27,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-21 20:29:27,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390518692] [2021-02-21 20:29:27,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:27,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:29:27,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112525550] [2021-02-21 20:29:27,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:29:27,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:27,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:29:27,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:29:27,942 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-21 20:29:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:28,391 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-21 20:29:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:29:28,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-21 20:29:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:28,394 INFO L225 Difference]: With dead ends: 59 [2021-02-21 20:29:28,394 INFO L226 Difference]: Without dead ends: 53 [2021-02-21 20:29:28,395 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 [2021-02-21 20:29:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-21 20:29:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-21 20:29:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-21 20:29:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-21 20:29:28,410 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-21 20:29:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:28,411 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-21 20:29:28,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:29:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-21 20:29:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-21 20:29:28,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:28,413 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] [2021-02-21 20:29:28,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:29:28,413 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-21 20:29:28,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:28,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352201461] [2021-02-21 20:29:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:28,416 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:28,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:28,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:28,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:28,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-21 20:29:28,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352201461] [2021-02-21 20:29:28,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:28,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:29:28,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659100569] [2021-02-21 20:29:28,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:29:28,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:28,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:29:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:29:28,807 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-21 20:29:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:29,285 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-21 20:29:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:29:29,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-21 20:29:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:29,288 INFO L225 Difference]: With dead ends: 64 [2021-02-21 20:29:29,288 INFO L226 Difference]: Without dead ends: 58 [2021-02-21 20:29:29,289 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 [2021-02-21 20:29:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-21 20:29:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-21 20:29:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-21 20:29:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-21 20:29:29,306 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-21 20:29:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:29,306 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-21 20:29:29,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:29:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-21 20:29:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-21 20:29:29,308 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:29,308 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] [2021-02-21 20:29:29,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:29:29,309 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:29,309 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-21 20:29:29,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:29,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110717846] [2021-02-21 20:29:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:29,312 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:29,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:29,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:29,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:29,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-21 20:29:29,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110717846] [2021-02-21 20:29:29,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:29,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:29:29,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561187024] [2021-02-21 20:29:29,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:29:29,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:29,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:29:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:29:29,683 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-21 20:29:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:30,208 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-21 20:29:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:29:30,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-21 20:29:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:30,210 INFO L225 Difference]: With dead ends: 69 [2021-02-21 20:29:30,210 INFO L226 Difference]: Without dead ends: 63 [2021-02-21 20:29:30,211 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 [2021-02-21 20:29:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-21 20:29:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-21 20:29:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-21 20:29:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-21 20:29:30,227 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-21 20:29:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:30,228 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-21 20:29:30,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:29:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-21 20:29:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-21 20:29:30,229 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:30,230 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] [2021-02-21 20:29:30,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:29:30,230 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-21 20:29:30,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:30,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986376083] [2021-02-21 20:29:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:30,234 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:30,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:30,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:30,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:30,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-21 20:29:30,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986376083] [2021-02-21 20:29:30,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:30,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:29:30,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447312446] [2021-02-21 20:29:30,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:29:30,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:30,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:29:30,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:29:30,677 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-21 20:29:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:31,254 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-21 20:29:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 20:29:31,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-21 20:29:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:31,257 INFO L225 Difference]: With dead ends: 74 [2021-02-21 20:29:31,257 INFO L226 Difference]: Without dead ends: 68 [2021-02-21 20:29:31,258 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 [2021-02-21 20:29:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-21 20:29:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-21 20:29:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-21 20:29:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-21 20:29:31,274 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-21 20:29:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:31,274 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-21 20:29:31,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:29:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-21 20:29:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-21 20:29:31,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:31,277 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] [2021-02-21 20:29:31,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:29:31,277 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:31,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-21 20:29:31,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:31,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524117980] [2021-02-21 20:29:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:31,281 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:31,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:31,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:31,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:31,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-21 20:29:31,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524117980] [2021-02-21 20:29:31,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:31,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:29:31,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915372720] [2021-02-21 20:29:31,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:29:31,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:29:31,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:29:31,818 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-21 20:29:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:32,371 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-21 20:29:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:29:32,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-21 20:29:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:32,374 INFO L225 Difference]: With dead ends: 79 [2021-02-21 20:29:32,374 INFO L226 Difference]: Without dead ends: 73 [2021-02-21 20:29:32,380 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 [2021-02-21 20:29:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-21 20:29:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-21 20:29:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-21 20:29:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-21 20:29:32,414 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-21 20:29:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:32,416 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-21 20:29:32,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:29:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-21 20:29:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-21 20:29:32,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:32,420 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] [2021-02-21 20:29:32,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:29:32,421 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-21 20:29:32,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:32,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409591841] [2021-02-21 20:29:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:32,428 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:32,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:32,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:32,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:32,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:32,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-21 20:29:32,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409591841] [2021-02-21 20:29:32,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:32,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:29:32,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437743566] [2021-02-21 20:29:32,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:29:32,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:32,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:29:32,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:29:32,975 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-21 20:29:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:33,651 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-21 20:29:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:29:33,652 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-21 20:29:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:33,653 INFO L225 Difference]: With dead ends: 84 [2021-02-21 20:29:33,654 INFO L226 Difference]: Without dead ends: 78 [2021-02-21 20:29:33,656 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 [2021-02-21 20:29:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-21 20:29:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-21 20:29:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-21 20:29:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-21 20:29:33,682 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-21 20:29:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:33,683 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-21 20:29:33,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:29:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-21 20:29:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-21 20:29:33,684 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:29:33,684 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] [2021-02-21 20:29:33,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:29:33,685 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:29:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:29:33,685 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-21 20:29:33,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:29:33,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408427607] [2021-02-21 20:29:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:29:33,689 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:29:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:33,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:33,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:33,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:33,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:29:33,817 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-21 20:29:33,819 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-21 20:29:33,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:29:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:33,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:29:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:29:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:33,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:33,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:33,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:33,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:29:34,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:29:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:29:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:29:34,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:29:34,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:29:34,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:29:34,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:29:34,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:29:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-02-21 20:29:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408427607] [2021-02-21 20:29:35,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:29:35,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-02-21 20:29:35,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497083846] [2021-02-21 20:29:35,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-21 20:29:35,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:29:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-21 20:29:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2021-02-21 20:29:35,196 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 32 states. [2021-02-21 20:29:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:29:39,881 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-02-21 20:29:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-21 20:29:39,882 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2021-02-21 20:29:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:29:39,883 INFO L225 Difference]: With dead ends: 78 [2021-02-21 20:29:39,883 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:29:39,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=965, Invalid=4147, Unknown=0, NotChecked=0, Total=5112 [2021-02-21 20:29:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:29:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:29:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:29:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:29:39,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-02-21 20:29:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:29:39,889 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:29:39,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-21 20:29:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:29:39,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:29:39,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:29:39,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:29:40,949 WARN L202 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2021-02-21 20:29:41,700 WARN L202 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-02-21 20:29:42,410 WARN L202 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-02-21 20:29:43,025 WARN L202 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-02-21 20:29:43,628 WARN L202 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-02-21 20:29:43,794 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 20:29:43,794 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 20:29:43,794 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 20:29:43,794 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,794 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,795 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,795 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,795 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,796 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|)) [2021-02-21 20:29:43,796 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,796 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 20:29:43,796 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,796 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,797 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,797 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,797 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:29:43,797 INFO L185 CegarLoopUtils]: At program point sumEXIT(lines 5 11) the Hoare annotation is: (let ((.cse2 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse2))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse2 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse3 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse3 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse3 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse3) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse3) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse3) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse3 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse3) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse3 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse3 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-21 20:29:43,798 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|)) [2021-02-21 20:29:43,798 INFO L185 CegarLoopUtils]: At program point L9-1(line 9) the Hoare annotation is: (and (let ((.cse0 (= sum_~n |sum_#in~n|))) (or (and .cse0 (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|)))) (let ((.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2)))) [2021-02-21 20:29:43,798 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)) [2021-02-21 20:29:43,799 INFO L185 CegarLoopUtils]: At program point L9-2(line 9) the Hoare annotation is: (and (let ((.cse0 (= sum_~n |sum_#in~n|))) (or (and .cse0 (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|)))) (let ((.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2)))) [2021-02-21 20:29:43,799 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|)) [2021-02-21 20:29:43,800 INFO L185 CegarLoopUtils]: At program point L9-3(line 9) the Hoare annotation is: (let ((.cse14 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse2 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse14)) (.cse4 (<= |sum_#t~ret7| .cse14))) (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| 7))) (and .cse0 .cse2 (<= .cse5 |sum_#res|) (<= |sum_#in~n| 7) .cse3 (<= .cse5 |sum_#t~ret7|) .cse4)) (let ((.cse6 (+ |sum_#in~m| 10))) (and .cse0 (<= .cse6 |sum_#res|) .cse2 .cse3 (<= .cse6 |sum_#t~ret7|) .cse4)) (let ((.cse7 (+ |sum_#in~m| 8))) (and .cse0 .cse2 (<= |sum_#in~n| 8) .cse3 (<= .cse7 |sum_#res|) (<= .cse7 |sum_#t~ret7|) .cse4)) (let ((.cse8 (+ |sum_#in~m| 4))) (and .cse0 (<= .cse8 |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse2 .cse3 (<= .cse8 |sum_#res|) .cse4)) (let ((.cse9 (+ |sum_#in~m| 6))) (and .cse0 (<= .cse9 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 6) (<= .cse9 |sum_#t~ret7|) .cse4)) (let ((.cse10 (+ |sum_#in~m| 5))) (and .cse0 (<= |sum_#in~n| 5) .cse2 .cse3 (<= .cse10 |sum_#t~ret7|) (<= .cse10 |sum_#res|) .cse4)) (let ((.cse11 (+ |sum_#in~m| 3))) (and .cse0 (<= .cse11 |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 3) .cse3 (<= .cse11 |sum_#res|) .cse4)) (let ((.cse12 (+ |sum_#in~m| 2))) (and .cse0 (<= .cse12 |sum_#res|) (<= |sum_#in~n| 2) .cse2 .cse3 .cse4 (<= .cse12 |sum_#t~ret7|))) (let ((.cse13 (+ |sum_#in~m| 9))) (and .cse0 .cse2 .cse3 (<= .cse13 |sum_#res|) (<= .cse13 |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse4))))) [2021-02-21 20:29:43,800 INFO L185 CegarLoopUtils]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2021-02-21 20:29:43,800 INFO L185 CegarLoopUtils]: At program point sumFINAL(lines 5 11) the Hoare annotation is: (let ((.cse2 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse2))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse2 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse3 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse3 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse3 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse3) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse3) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse3) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse3 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse3) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse3 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse3 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-21 20:29:43,800 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: false [2021-02-21 20:29:43,801 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (<= 10 main_~a~0) [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= main_~a~0 10) (<= main_~a~0 main_~result~0) (<= 10 main_~a~0) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: false [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0) (= main_~b~0 0)) [2021-02-21 20:29:43,801 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0)) [2021-02-21 20:29:43,802 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0)) [2021-02-21 20:29:43,802 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (<= 10 main_~a~0) [2021-02-21 20:29:43,802 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0)) [2021-02-21 20:29:43,802 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 main_~result~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-21 20:29:43,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:29:43 BoogieIcfgContainer [2021-02-21 20:29:43,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:29:43,828 INFO L168 Benchmark]: Toolchain (without parser) took 20082.39 ms. Allocated memory was 151.0 MB in the beginning and 320.9 MB in the end (delta: 169.9 MB). Free memory was 126.4 MB in the beginning and 255.3 MB in the end (delta: -128.9 MB). Peak memory consumption was 186.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:29:43,828 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:29:43,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:29:43,829 INFO L168 Benchmark]: Boogie Preprocessor took 53.46 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:29:43,829 INFO L168 Benchmark]: RCFGBuilder took 510.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 133.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:29:43,829 INFO L168 Benchmark]: TraceAbstraction took 19145.47 ms. Allocated memory was 151.0 MB in the beginning and 320.9 MB in the end (delta: 169.9 MB). Free memory was 132.7 MB in the beginning and 255.3 MB in the end (delta: -122.6 MB). Peak memory consumption was 192.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:29:43,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.46 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 510.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 133.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19145.47 ms. Allocated memory was 151.0 MB in the beginning and 320.9 MB in the end (delta: 169.9 MB). Free memory was 132.7 MB in the beginning and 255.3 MB in the end (delta: -122.6 MB). Peak memory consumption was 192.5 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) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 8) && \result <= \old(n) + \old(m)) && \old(m) + 8 <= \result)) || ((((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) && m == \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 1 <= \result) && m == \old(m)) && \old(n) <= 1) && \result <= \old(n) + \old(m))) || (((n == \old(n) && \old(m) + 10 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 3) && \result <= \old(n) + \old(m)) && \old(m) + 3 <= \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) && \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: 10 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 303 SDtfs, 736 SDslu, 773 SDs, 0 SdLazy, 1797 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 46 PreInvPairs, 196 NumberOfFragments, 1234 HoareAnnotationTreeSize, 46 FomulaSimplifications, 2945 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 36 FomulaSimplificationsInter, 4518 FormulaSimplificationTreeSizeReductionInter, 3.4s 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...